Some examples of these chemicals are: Lead from lead-based paints. Crystalline silica from bricks. Cement and other masonry products.
OPERATION MANUAL SERIES MODELS J36 AND B46 SERIES CENTRIFUGAL CLUTCH (INCLUDES M30H55) (HONDA/ROBIN-SUBARU GASOLINE ENGINES) Revision #0 (10/27/16) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES. PN: 13401 PROPOSITION 65 WARNING Engine exhaust and some of its constituents, and some dust created by power sanding, sawing, grinding, drilling and other construction activities contains chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Some examples of these chemicals are: Lead from lead-based paints. Crystalline silica from bricks. Cement and other masonry products. Arsenic and chromium from chemically treated lumber. Di-lsononyl Phthalate (DINP) Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: ALWAYS work in a well ventilated area, and work with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles. PAGE 2 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) SILICOSIS/RESPIRATORY WARNINGS WARNING WARNING SILICOSIS WARNING Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give off dust or mists containing crystalline silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Repeated and/or substantial inhalation of airborne crystalline silica can cause serious or fatal respiratory diseases, including silicosis. In addition, California and some other authorities have listed respirable crystalline silica as a substance known to cause cancer. When cutting such materials, always follow the respiratory precautions mentioned above. RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and other materials can generate dust, mists and fumes containing chemicals known to cause serious or fatal injury or illness, such as respiratory disease, cancer, birth defects or other reproductive harm. If you are unfamiliar with the risks associated with the particular process and/or material being cut or the composition of the tool being used, review the material safety data sheet and/or consult your employer, the material manufacturer/supplier, governmental agencies such as OSHA and NIOSH and other sources on hazardous materials. California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, or other harmful effects. Control dust, mist and fumes at the source where possible. In this regard use good work practices and follow the recommendations of the manufacturers or suppliers, OSHA/NIOSH, and occupational and trade associations. Water should be used for dust suppression when wet cutting is feasible. When the hazards from inhalation of dust, mists and fumes cannot be eliminated, the operator and any bystanders should always wear a respirator approved by NIOSH/MSHA for the materials being used. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 3 J36 AND B46-SERIES/M30 WALK-BEHIND POWER TROWELS Proposition 65 Warning............................................ 2 Silicosis/Respiratory Warnings................................. 3 Table Of Contents..................................................... 4 Training Checklist..................................................... 5 Daily Pre-Operation Checklist.................................. 6 Safety Information............................................... 7-11 Specifications.................................................... 12-13 Noise And Vibration Emissions............................... 14 Dimensions............................................................. 15 General Information................................................ 16 Trowel Components........................................... 18-19 Engine Components............................................... 20 Assembly And Installation................................. 21-23 Inspection.......................................................... 24-26 Operation........................................................... 26-31 Options.............................................................. 32-33 Maintenance...................................................... 34-42 Troubleshooting (Engine)................................... 43-44 Troubleshooting (Trowel).................................... 45-46 Wiring Diagram....................................................... 47 TABLE OF CONTENTS PAGE 4 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) TRAINING CHECKLIST Training Checklist No. Description OK? Date 1 Read operation manual completely. Machine layout, location of 2 components, checking of engine oil level. 3 Fuel system, refueling procedure. 4 Operation of controls (machine not running). 5 Safety controls, safety stop switch operation. 6 Emergency stop procedures. 7 Startup of machine, engine choke. 8 Maintaining a hover. 9 Maneuvering. 10 Pitching. 11 Concrete finishing techniques. 12 Shutdown of machine. 13 Lifting of machine (lifting bale). 14 Machine transport and storage. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 5 DAILY PRE-OPERATION CHECKLIST Daily Pre-Operation Checklist 1 Engine oil level 2 Gearbox oil level 3 Condition of blades 4 Blade pitch operation 5 Safety stop switch operation PAGE 6 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others. SAFETY MESSAGES The four safety messages shown below will inform you about potential hazards that could injure you or others. The safety messages specifically address the level of exposure to the operator and are preceded by one of four words: DANGER, WARNING, CAUTION or NOTICE. SAFETY SYMBOLS DANGER Indicates a hazardous situation which, if not avoided, WILL result in DEATH or SERIOUS INJURY. WARNING Indicates a hazardous situation which, if not avoided, COULD result in DEATH or SERIOUS INJURY. CAUTION Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY. NOTICE Addresses practices not related to personal injury. SAFETY INFORMATION Potential hazard associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages. SYMBOL SAFETY HAZARD WARNING Lethal Exhaust Gas Hazard Inhaling exhaust fumes can result in severe injury or death. Only operate equipment in well ventilated areas. DO NOT inhale exhaust gases/fumes. WARNING Explosive Fuel Hazard Gasoline fuel can cause fire or explosion. Stop engine before refueling. Keep cigarettes, sparks and flames away from hot surfaces. CAUTION Burn Hazard HOT PARTS can burn skin. DO NOT touch hot parts. Allow machine a sufficient amount of time to cool before performing maintenance. Warning decals associated with the operation of this equipment are defined below: DECAL SAFETY HAZARD WARNING Rotating Blade Hazard Keep hands and feet clear of guard rings. Stop engine before servicing. WARNING Read Manual To avoid injury you must read and understand operator's manual before using this machine. WARNING Lifting Crush Hazard NEVER allow any person to stand underneath the trowel while lifting. DO NOT lift trowel with pans attached. ALWAYS make sure handle is securely attached. P/N 23700 On Quick PitchTM models make sure T-Handle latch is locked (engaged). ALWAYS wear protective clothing when P/N36099 operating this equipment WARNING Training This machine to be operated by qualified personnel. Ask for training as needed. WARNING Guard Hazard NEVER operate this equipment with guards removed. Keep hands clear. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 7 GENERAL SAFETY CAUTION NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations. Avoid wearing jewelry or loose fitting clothes that may snag on the controls or moving parts as this can cause serious injury. NEVER operate this equipment when not feeling well due to fatigue, illness or when under medication. NEVER operate this equipment under the influence of drugs or alcohol. ALWAYS clear the work area of any debris, tools, etc. that would constitute a hazard while the equipment is in operation. No one other than the operator is to be in the working area when the equipment is in operation. DO NOT use the equipment for any purpose other than its intended purposes or applications. SAFETY INFORMATION NOTICE This equipment should only be operated by trained and qualified personnel 18 years of age and older. Whenever necessary, replace nameplate, operation and safety decals when they become difficult read. Manufacturer does not assume responsibility for any accident due to equipment modifications. Unauthorized equipment modification will void all warranties. NEVER use accessories or attachments that are not recommended by Multiquip for this equipment. Damage to the equipment and/or injury to user may result. ALWAYS know the location of the nearest fire extinguisher. ALWAYS know the location of the nearest first aid kit. ALWAYS know the location of the nearest phone or keep a phone on the job site. Also, know the phone numbers of the nearest ambulance, doctor and fire department. This information will be invaluable in the case of an emergency. PAGE 8 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) TROWEL SAFETY DANGER Engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled. The engine of this equipment requires an adequate free flow of cooling air. NEVER operate this equipment in any enclosed or narrow area where free flow of the air is restricted. If the air flow is restricted it will cause injury to people and property and serious damage to the equipment or engine. DANGEROUS GAS FUMES NEVER operate the equipment in an explosive atmosphere or near combustible materials. An explosion or fire could result causing severe bodily harm or even death. WARNING ALWAYS keep clear of rotating or moving parts while operating the trowel. DO NOT start or operate the trowel if the drive train will not disengage. Centrifugal force between the trowel and surface when starting can cause uncontrolled handle movement that can cause serious injury. The handle must not move while pulling the engine recoil starter. NEVER disconnect any emergency or safety devices. These devices are intended for operator safety. Disconnection of these devices can cause severe injury, bodily harm or even death. Disconnection of any of these devices will void all warranties. CAUTION NEVER stand on trowel during operation. NEVER lubricate components or attempt service on a running machine. NEVER place your feet or hands inside the guard rings while starting or operating this equipment. SAFETY INFORMATION ALWAYS keep work area clear around the trowel. Make sure it is free of debris and objects. KEEP CLEAR NOTICE ALWAYS keep the machine in proper running condition. Fix damage to machine and replace any broken parts immediately. ALWAYS store equipment properly when it is not being used. Equipment should be stored in a clean, dry location out of the reach of children and unauthorized personnel. A safety manual for operating and maintenance personnel of concrete power trowels produced by the Association of Equipment Manufacturers (AEM) can be obtained for a fee by ordering through their website at www.aem.org. Order FORM PT-160 ENGINE SAFETY WARNING DO NOT place hands or fingers inside engine compartment when engine is running. NEVER operate the engine with heat shields or guards removed. Keep fingers, hands hair and clothing away from all moving parts to prevent injury. DO NOT remove the engine oil drain plug while the engine is hot. Allow the oil to cool before performing maintenance. This will prevent scalding of personnel. CAUTION NEVER touch the hot exhaust manifold, muffler or cylinder. Allow these parts to cool before servicing equipment. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 9 NOTICE NEVER run engine without an air filter or with a dirty air filter. Severe engine damage may occur. Service air filter frequently to prevent engine malfunction. NEVER tamper with the factory settings of the engine or engine governor. Damage to the engine or equipment can result if operating in speed ranges above the maximum allowable. FUEL SAFETY DANGER DO NOT add fuel to equipment if it is placed inside truck bed with plastic liner. Possibility exists of explosion or fire due to static electricity. FUEL FUEL DO NOT start the engine near spilled fuel or combustible fluids. Fuel is extremely flammable and its vapors can cause an explosion if ignited. ALWAYS refuel in a well-ventilated area, away from sparks and open flames. ALWAYS use extreme caution when working with flammable liquids. DO NOT fill the fuel tank while the engine is running or hot. DO NOT overfill tank, since spilled fuel could ignite if it comes into contact with hot engine parts or sparks from the ignition system. SAFETY INFORMATION Store fuel in appropriate containers, in well-ventilated areas and away from sparks and flames. NEVER use fuel as a cleaning agent. DO NOT smoke around or near the equipment. Fire or explosion could result from fuel vapors or if fuel is spilled on a hot engine. TRANSPORTING SAFETY CAUTION NEVER allow any person or animal to stand underneath the equipment while lifting. NOTICE Some walk-behind trowels can be lifted or moved by two people utilizing lifting tubes or other special attachments. Generally, however, they must be lifted using lifting bales and cranes, hoists, or forklifts. NEVER transport trowel with float pans attached unless safety catches are used and are specifically cleared for such transport by the manufacturer. NEVER hoist the trowel more than three feet off the ground with float pans attached. Before lifting, make sure that the lifting bales are not damaged. Always make sure crane or lifting device has been properly secured to the lifting bales of the equipment. ALWAYS shutdown engine before transporting. NEVER lift the equipment while the engine is running. Tighten fuel tank cap securely and close fuel cock to prevent fuel from spilling. Use adequate lifting cable (wire or rope) of sufficient strength. DO NOT lift machine to unnecessary heights. ALWAYS tie down equipment during transport by securing the equipment with rope. PAGE 10 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) ENVIRONMENTAL SAFETY/DECOMMISSIONING NOTICE Decommissioning is a controlled process used to safely retire a piece of equipment that is no longer serviceable. If the equipment poses an unacceptable and unrepairable safety risk due to wear or damage or is no longer cost effective to maintain (beyond life-cycle reliability) and is to be decommissioned (demolition and dismantlement),be sure to follow rules below. DO NOT pour waste or oil directly onto the ground, down a drain or into any water source. Contact your country's Department of Public Works or recycling agency in your area and arrange for proper disposal of any electrical components, waste or oil associated with this equipment. When the life cycle of this equipment is over, remove battery and bring to appropriate facility for lead reclamation. Use safety precautions when handling batteries that contain sulfuric acid. When the life cycle of this equipment is over, it is recommended that the trowel frame and all other metal parts be sent to a recycling center. Metal recycling involves the collection of metal from discarded products and its transformation into raw materials to use in manufacturing a new product. Recyclers and manufacturers alike promote the process of recycling metal. Using a metal recycling center promotes energy cost savings. SAFETY INFORMATION EMISSIONS INFORMATION NOTICE The gasoline engine used in this equipment has been designed to reduce harmful levels of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx) contained in gasoline exhaust emissions. This engine has been certified to meet US EPA Evaporative emissions requirements in the installed configuration. Attempting to modify or make adjustments to the engine emmission system by unauthorized personnel without proper training could damage the equipment or create an unsafe condition. Additionally, modifying the fuel system may adversely affect evaporative emissions, resulting in fines or other penalties. Emission Control Label The emission control label is an integral part of the emission system and is strictly controlled by regulation(s). The label must remain with the engine for its entire life. If a replacement emission label is needed, please contact your authorized engine distributor. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 11 Model Number of Blades Ring Diameter Rotor - RPM Path Width Shipping Weight SPECIFICATIONS Table 1. J-Series Trowel Specifications J36H55/J36R60/J36S60 J36H90/J36R90 J36H90H/J36R90H 4 36 in. (914 mm) 60 - 115 60 - 130 90 - 155 34.5 in (876 mm) 182 lb (82.5 kg) 182 lb (82.5 kg) 207 lb (93.8 kg) M30H55 30 in. (762 mm) 60 - 130 28.67 in (728 mm) 195 lb (88.5 kg) Model Number of Blades Ring Diameter Rotor - RPM Path Width Shipping Weight Table 2. B-Series Trowel Specifications B46H90/B46R90/B46H11 B46H11H B46S90 4 46.5 in. (1,181 mm) 60 - 130 90 - 155 60 - 130 46 in (1,170 mm) 285 lb (129 kg) 300 lb (136 kg) Model Trowel Type Bore X Stroke Displacement Max Output Fuel Tank Capacity Fuel Lube Oil Capacity Oil Type Speed Control Method Starting Method Dimensions (L x W x H) Dry Net Weight Table 3. Engine Specifications HONDA GX160UT2QX2 HONDA GX270UTQA2 ROBIN EX170D50040 ROBIN EX270D50020 SUBARU EX170DM2230 JH55C/M30H55 J36H90/J36H90H B46H90 J36R60 J36R90/J36R90H B46R90 J36S60 Air-cooled 4 stroke, Single Cylinder, OHV, Horizontal PTO Shaft Gasoline Engine Air-cooled 4 stroke, Slant Single Cylinder, OHC, Horizontal PTO Shaft Gasoline Engine 2.70 in. X 1.8 in. (68 mm x 45 mm) 3.0 in. X 2.3 in. (77 mm x 58 mm) 2.64 in. X 1.89 in. (67 mm x 48 mm) 2.95 in. X 2.36 in. (75 mm x 60 mm) 2.64 in. X 1.89 in. (67 mm x 48 mm) 163 cc 270 cc 169 cc 265 cc 10.31 cu-in. (169 cc) 5.4 H.P. @ 3600 RPM 9 H.P. @ 3600 RPM 5.7 H.P. @ 4000 RPM 9 H.P. @ 4000 RPM 5.7 H.P. @ 4000 RPM Approx. 0.95 U.S. Approx. 1.59 U.S. Approx. 0.95 U.S. Approx. 1.59 U.S. Approx. 0.95 U.S. Gallons (3.6 Liters) Gallons (6.0 Liters) Gallons (3.6 Liters) Gallons (6.0 Liters) Gallons (3.6 Liters) Unleaded Gasoline 0.63 Qt. (0.6 Liters) 1.06 Qt. (1.1 Liters) 0.63 Qt. (0.6 Liters) 1.06 Qt. (1.0 Liters) 0.63 Qt. (0.6 Liters) 4-Stroke API, SF or SG SAE 10W-30 General Use Centrifugal Fly-Weight Type 12.3 x 14.3 X 13.2 in. (312 X 362 X 335 mm 33.1 lbs (15 Kg.) 14.0 x 16.9 X 16.1 in. (355 X 430 X 410 mm) 55.1 lbs (25 Kg.) Recoil Start 11.97 x 13.94 X 13.2 in. 13.82 x 16.54 X 16.14 in. 11.97 x 13.94 X 13.19 in. (304 X 354 X 335 mm) (351 X 420 X 410 mm) (304 X 354 X 335 mm) 33.1 lbs (15 Kg.) 46.3 lbs (21 Kg.) 33.1 lbs (15 Kg.) PAGE 12 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) SPECIFICATIONS Table 4. Engine Specifications (Continued) Model HONDA GX340U1QAP2 SUBARU EX270D5E5013 Trowel B46H11/B46H11H B46S90 Type Air-cooled 4 stroke, Single Cylinder, OHV, Air-cooled 4 stroke, Slant Single Cylinder, Horizontal PTO Shaft Gasoline Engine OHC, Horizontal PTO Shaft Gasoline Engine Bore X Stroke 3.2 in. X 2.5 in. (82 mm x 64 mm) 2.95 in. X 2.36 in. (75 mm x 60 mm) Displacement 387 cc 265 cc Max Output 11 H.P. @ 3600 RPM 9 H.P. @ 4000 RPM Fuel Tank Capacity Approx. 1.72 U.S. Gallons (6.5 Liters) Approx. 1.59 U.S. Gallons (6.0 Liters) Fuel Unleaded Gasoline Lube Oil Capacity 1.06 Qt. (1.0 Liters) 1.06 Qt. (1.1 Liters) Oil Type 4-Stroke API, SF or SG SAE 10W-30 General Use Speed Control Method Centrifugal Fly-Weight Type Starting Method Recoil Start Dimensions (L x W x H) 16.7 x 17.7 X 17.4 in. (425 X 450 X 443 mm) 13.82 x 16.54 X 16.14 in. (351 X 420 X 410 mm) Dry Net Weight 68 lbs (29 Kg.) 46.31 lbs (21 Kg.) J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 13 NOISE AND VIBRATION EMISSIONS MODEL Guaranteed ISO 11201:2010 Based Sound Pressure Level at Operator Station in dB(A)a Guaranteed ISO 3744:2010 Based Sound Power Level in dB(A)b Hand-Arm Vibration Per ISO 5349-1:2001 in m/s2 A(8) Table 5. J-Series Trowel Noise and Vibration Emissions J36H55 J36R60 J36S60 J36H90 J36R90 J36H90H J36R90H M30H55 Quick PitchTM Handle 87 91 90.79 N/A N/A 90 N/A N/A Standard Handle 87 91 90.79 N/A N/A 90 N/A N/A Quick PitchTM Handle 108 105 104.3 N/A N/A 107 N/A N/A Standard Handle 108 105 104.3 N/A N/A 107 N/A N/A Quick PitchTM Handle 1.6 1.18 1.18 N/A N/A 0.98 N/A N/A Standard Handle 1.1 1.20 1.20 N/A N/A 1.50 N/A N/A Table 6. B-Series Trowel Noise and Vibration Emissions MODEL B46H90 B46S90 B46H11 Quick PitchTM Guaranteed ISO 11201:2010 Based Handle 89 86.76 90.79 Sound Pressure Level at Operator Station in dB(A)a Standard Handle 89 86.76 90.79 Quick PitchTM Guaranteed ISO 3744:2010 Based Handle 111 105.11 104.3 Sound Power Level in dB(A)b Standard Handle 111 105.11 104.3 Quick PitchTM Hand-Arm Vibration Per ISO 5349- Handle 1.7 0.87 1.18 1:2001 in m/s2 A(8) Standard Handle 1.51 0.97 1.20 a. With an uncertainty factor K of 2.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011 b. With an uncertainty factor K of 1.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011 B46R90 N/A N/A N/A N/A N/A N/A B46H11H N/A N/A N/A N/A N/A N/A NOTES: 1. Sound Pressure and Power Levels are "A" weighted Measures per ISO 3744:2010. They are measured with the operating condition of the machine which generates the most repeatable but highest values of the sound levels. Under normal circumstances, the sound level will vary depending on the condition of the material being worked upon. 2. The vibration level indicated is the vector sum of the RMS (Root Mean Square) Values of amplitudes on each axis, standardized to an 8 hour exposure period, and obtained using operating condition of the machine that generates the most repeatable but highest values in accordance with the applicable standards for the machine. 3. Per EU Directive 2002/44/EC, the daily exposure action value for hand/arm vibration is 2.5 m/s2 "A(8).The daily exposure limit value is 5 m/s2"A(8). PAGE 14 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) DIMENSIONS BA C SIDE VIEW TOP VIEW Standard Handle Shown Figure 1. Dimensions Table 7. Trowel Dimensions MODEL J36 Series M30H55 AHeight (Lifting Bale) in. (mm) 27 (686) 26 (661) BHeight (Handle) in. (mm) Standard Quick Pitch CWidth (Ring Diameter) in. (mm) DLength in. (mm) 36 (914) 74 (1,880) 41.5 (1,054) 30 (762) 68 (1,727) D B46 Series 31.5 (800) 46.5 in. (1,181 mm) 81.4 (2,068) J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 15 INTENDED USE Operate this trowel, tools and components in accordance with the manufacturer's instructions. Use of any other tools for stated operation is considered contrary to designated use. The risk of such use lies entirely with the user. The manufacturer cannot be held liable for damages as a result of misuse. TROWEL FAMILIARIZATION This walk-behind trowel is designed for the floating and finishing of concrete slabs. Take a walk around the trowel. Take notice of all the major components (Figure 2) like the engine, blades, steering handle, kill switch, gearbox, etc. Check that there is always oil in the engine. Read all the safety instructions carefully. Safety instructions will be found throughout this manual and on the trowel. Keep all safety information in good, readable condition. Operators should be well trained on the operation and maintenance of the trowel. Before using your trowel, test it on a flat watered down section of finished concrete that is free of any debris and other objects. This trial test run will increase your confidence in using the trowel and at the same time it will familiarize you with the trowel's controls. In addition you will understand how the trowel handles under actual conditions. ENGINE These trowels are equipped with various gasoline engines (Reference Table 3 and Table 4) that range in horsepower from 5.4 HP to 11.0 HP. Refer to the engine owner's manual for instructions regarding the operation and maintenance of your engine. Please contact your nearest Multiquip Dealer for a replacement if the original manual is lost or becomes unusable. DRIVE SYSTEM Power is transferred from the engine to the gearbox input shaft via a V-belt pulley drive system. The pulley engages using a centrifugal clutch. GENERAL INFORMATION GEARBOX The gearbox is located beneath the engine and transfers power to the spider assembly. The gearbox controls the rotational speed of the trowel and is equipped with two shafts (input and output). SPIDER The vertical output shaft of the gearbox connects to a cast hub called the spider. The spider has 4 arms that extend outward and are used for attachment of blades or other accessories. As the gearbox output shaft rotates, so does the spider assembly. GUARD RING This unit is equipped with a safety guard ring. It is designed to help protect items from coming into contact with the rotating blades while the trowel is in operation. BLADES The blades of the trowel finish the concrete as they are rotated around the surface. This trowel comes equipped with four combination blades (8 in./203 mm wide) per rotor equally spaced in a radial pattern and attached to a vertical rotating shaft by means of a spider assembly. CENTRIFUGAL SAFETY STOP SWITCH In the event of a trowel runaway condition (operator releases handlebars during operation), the centrifugal safety stop switch will stop the engine and bring the trowel to a halt CAUTION NEVER attempt to lift the trowel by yourself. ALWAYS get the assistance of another person to help lift the trowel. TRAINING For proper training, please use the "TRAINING CHECKLIST" form located in the front of this manual. This checklist will provide an outline for an experienced operator to provide training to a new operator. PAGE 16 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) NOTES J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 17 2 1 TROWEL COMPONENTS 5 6789 4 3 11 10 16 15 14 13 12 17 QUICK PITCH TM HANDLE (OPTION) Figure 2. Trowel Components PAGE 18 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Figure 2 shows the location of the basic components for the trowel. Listed below is a brief explanation of each component. 1. Access Panel -- Allows access to the blade area. NEVER run the trowel with this access panel removed. 2. Engine -- Gasoline engine. 3. Lifting Bale -- Attach a suitable lifting device to lifting bale whenever lifting of the trowel is required. 4. Throttle Lever -- Controls engine speed. Returns engine to idle when released. 5. Operator Presence Lever (Optional Feature) -- If equipped with this option, in the event of a trowel runaway condition (operator releases the handle), the operator presence lever signals the safety stop switch which will stop the engine and bring the trowel to a halt. 6. Vibratory Handle Bar -- Installed rubber shock mounts/isolators reduces vibration when the trowel is operating. 7. Pitch Control Star Wheel -- To adjust the pitch of the blades, rotate the star wheel clockwise to pitch blades upwards. Rotate star wheel counterclockwise to pitch blades flat (no pitch). 8. Handlebar Pad -- Foam rubber pad that protects the body when coming in contact with handle bar. 9. Hand Grips -- When maneuvering of the trowel is required, ALWAYS place hands on both grips to operate the trowel. Replace hand grips when they become worn or damaged. TROWEL COMPONENTS 10. Handlebar Adjuster -- Change the angle/height of the handle bars by loosening star wheel. Adjust handlebar to desired location and tighten starwheel firmly to hold handlebar in that position. 11. Centrifugal "Kill" Switch -- In the event the operator loses control of the trowel, this switch will shut down the engine. 12. Blades -- This trowel is equipped with combination blades. These blades are versatile and should take care of most troweling needs. In addition, float discs can be attached to the trowel arms that will allow the trowel to float on "wet" concrete. 13. V-Belt Cover -- Remove this cover to gain access to the V-belt. NEVER operate the trowel with this cover removed. 14. Guard Ring -- NEVER put hands or feet inside guard ring while the machine is running. 15. Gearbox -- Helical worm gear drive gearbox. Provides rotation of blades via engine interface. ALWAYS check gearbox oil level (sight glass) prior to each use. Fill with recommended type gearbox oil. 16. Trowel Arm -- NEVER operate the trowel with a bent, broken or out-of-adjustment trowel arm. If the blades show uneven wear patterns or some blades wear out faster than others, the trowel arm may need to be adjusted. 17. Quick PitchTM Control Handle -- To adjust the pitch of the blades upwards using the "Quick PitchTM" handle, simply pull the T-handle backwards while squeezing the trigger. Pushing the T-handle forward will cause the blades to lay flat. Contact MQ unit sales for this option. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 19 1 11 2 ENGINE COMPONENTS 1 11 2 10 3 9 3 9 8 7 6 5 10 CLOSE OPEN 8 7 4 HONDA GX 6 5 4 ROBIN-SUBARU EX Figure 3. Honda/Robin Subaru Basic Engine Components INITIAL SERVICING The engine (Figure 3) must be checked for proper lubrication and filled with fuel prior to operation. Refer to the manufacturer's engine manual for instructions and details of operation and servicing. 1. Fuel Filler Cap/Fuel Tank Remove this cap to add unleaded gasoline to the fuel tank. Fill with unleaded gasoline. Refer to Table 3 for fuel tank capacity. Make sure cap is tightened securely. DO NOT over fill. For additional information refer to Honda engine owner's manual. DANGER Add fuel to the tank only when the engine is stopped and has had an opportunity to cool down. In the event of a fuel spill, DO NOT attempt to start the engine until the fuel residue has been completely wiped up and the area surrounding the engine is dry. 6. Fuel Valve Lever OPEN to let fuel flow, CLOSE to stop the flow of fuel. 7. Dipstick/Oil Filler Cap Remove this cap to determine if the engine oil is low. Add oil through this filler port as recommended in Table 8. 8. Choke Lever Used in the starting of a cold engine, or in cold weather conditions. The choke enriches the fuel mixture. 9. Air Cleaner Prevents dirt and other debris from entering the fuel system. Remove wing-nut on top of air filter canister to gain access to filter element NOTICE Operating the engine without an air filter, with a damaged air filter, or a filter in need of replacement will allow dirt to enter the engine, causing rapid engine wear. 2. Throttle Lever Used to adjust engine RPM speed. 3. Engine On/Off Switch ON position permits engine starting, OFF position stops engine operation. 4. Recoil Starter (pull rope) Manual-starting method. Pull the starter grip until resistance is felt, then pull briskly and smoothly. 5. Oil Drain Plug Remove this plug to remove oil from the engine's crankcase. 10. Spark Plug Provides spark to the ignition system. Set spark plug gap according to engine manufacturer's instructions. Clean spark plug once a week. 11. Muffler Used to reduce noise and emissions. NEVER touch when hot! PAGE 20 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) ASSEMBLY AND INSTALLATION ASSEMBLY AND INSTALLATION Before the trowel can be put into operation there are some components that must be installed before the trowel can be used. This section provides general instructions on how to install those components. For more detailed handle assembly intructions, contact Multiquip and request for Instruction Sheet P/N 20485. Handle Tube Installation 1. Attach the main handle (tube) to the gearbox as shown in (Figure 4). The mounting hardware should be contained in the shipping container. MAIN HANDLE (TUBE) 3/8 FLAT WASHER 3/8-16 NYLOC NUT 3/8-16 X 3.25 HHC SCREW GEARBOX Figure 4. Handle Tube Installation Vibratory T-Handle Bar Placement 1. The vibratory T-handle bar is already attached to the main handle tube. 2. To adjust the height of the T-bar, loosen the star wheel (Figure 5) and position T-handle bar in the desired position. T-HANDLE BAR HEIGHT ADJUSTMENT STAR WHEEL Figure 5. T-Handle Bar Adjustment 3. Tighten star wheel firmly. NOTICE If additional handle height adjustment is desired, a handle wedge kit can be purchased for your trowel by ordering P/N 2576 from your Multiquip dealer. These wedges are placed between the handle and the gearbox to adjust the operating height of the handle. This kit comes complete with wedges, new bolts and installation instructions. This will move your operating handle position approximately 3 inches (76 mm) up or down. Throttle Cable Installation 1. Uncoil the throttle cable and housing. 2. Feed the throttle cable through the cable housing. 3. Connect the throttle cable to the engine (Figure 7). There should be a piece of wire installed on the trowel to show where to route the throttle cable. ADJUSTER NUT CLAMP SCREW CABLE END SWIVEL STOP IDLE RETURN SPRING CABLE HOUSING END SWIVEL STOP HOLE CABLE HOUSING CLAMP TROWEL THROTTLE CABLE Figure 6. Throttle Cable Installation 4. Route cable end through the spring and swivel stop. When connecting the cable housing, make sure that no more than 1/4 inch (6.4 mm) of the cable housing protrudes past the housing clamp on the engine. 5. Tighten cable clamp screw and swivel stop screw. 6. After the cable has been installed on the engine, adjust and tighten operator position of the handle to lock the throttle cable at the proper length. 7. Adjustment of the throttle cable tension may be required. If so, loosen the adjusting nut (top nut) on the throttle cable receiver (Figure 7) and loosen or tighten the locking nut (bottom nut). Retighten adjusting nut. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 21 ASSEMBLY AND INSTALLATION Pitch Cable Installation 1. For Standard Handle models extend the pitch cable to maximum length by turning the blade pitch star wheel (Figure 9) fully counterclockwise for no pitch (blades flat). INCREASE BLADE PITCH (CW) DECREASE BLADE PITCH (CCW) Figure 7. Throttle Cable Receiver Adjustment NOTICE If the throttle lever does not return to the "neutral" position with throttle backed off, loosen adjuster nut 1/2 turn at a time, tighten and recheck. Readjust throttle tension as necessary. Safety Stop Switch Connection 1. Connect the black tail wire from the engine to the black safety stop wire from the centrifugal stop switch as shown in Figure 8. Figure 9. Blade Pitch Star Wheel (Standard Handle) 2. For Quick PitchTM Handle models extend the pitch cable to maximum length by grasping the T-handle (Figure 10), then squeezing the trigger lock and pushing the T-handle forward for no pitch (blades flat). T-HANDLE TRIGGER (SQUEEZE) NO PITCH FORWARD SAFETY STOP WIRE CONNECTION POINT Figure 10. Blade Pitch T-Handle (Quick PitchTM Handle) 3. Remove brass set nut #1 from the blade pitch cable end as shown in (Figure 11). Figure 8. Safety Stop Switch Connection BLADE PITCH CABLE BRASS SET NUT #1 BRASS SET NUT #2 Figure 11. Blade Pitch Cable PAGE 22 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) ASSEMBLY AND INSTALLATION 4. Thread brass set nut #2 (Figure 11) towards the cable as far as possible. 5. Insert the cable end through the yoke eyelet (Figure 12). Tighten brass set nut #1 by hand to remove all the slack from the cable. BLADE PITCH CABLE YOKE YOKE EYELET 7. Use a wrench and finish tightening the brass set #1 nut up against the yoke boss. Pre-Load Adjustment (Quick PitchTM Handle Only) WARNING The Quick PitchTM handle is spring loaded, personal injury or damage could result from improper handling, installation or adjustment. Use extreme caution when installing this component. 1. After the Quick-PitchTM handle has been installed on the trowel, spring pre-load adjustment will be required. 2. Locate the spring pre-load adjustment screw (Figure 13) on the underside of the handle tube. BRASS SET NUT #1 BRASS SET NUT #2 Figure 12. Pitch Cable Yoke Attachment 6. Using a wrench, tighten the brass set #2 nut up against the yoke boss. This will lock the cable in place. ALIGNMENT DECAL PRELOAD TRIM INDICATOR FINISH J COMBO FINISH B COMBO INDICATBOR BO COM TRIM FINISH PRELOJAD BO M CO FINISH ADJUSTMENT SCREW SLIDER GROOVE Figure 13. Spring Pre-Load Adjustment 3. A decal has been placed on the side of the handle tube to assist the user in the adjustment of the spring. 4. Depending on the type of blade and trowel being used, align the groove on the slider with either the letter "J" or "B" on the decal. The letter "J" stands for J-36 series. walk-behind trowel, conversely the letter "B" stands for B-46 series walk-behind trowel. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 23 CAUTION ALWAYS wear approved eye and hearing protection before operating the trowel. INSPECTION 4. If the oil level is low (Figure 15), fill to the edge of the oil filler hole with the recommended oil type as listed in Table 8. Reference Table 3 for maximum engine oil capacity. NEVER place hands or feet inside the guard rings while the engine is running. ALWAYS shut the engine down before performing any kind of maintenance service on the trowel. Before Starting 1. Read all safety instructions at the beginning of manual. 2. Clean the trowel, removing dirt and dust, particularly the engine cooling air inlet, carburetor and air cleaner. 3. Check the air filter for dirt and dust. If air filter is dirty, replace air filter with a new one as required. 4. Check carburetor for external dirt and dust. Clean with dry compressed air. 5. Check fastening nuts and bolts for tightness. Engine Oil Check 1. To check the engine oil level, place the trowel on secure level ground with the engine stopped. 2. Remove the dipstick from the engine oil filler hole (Figure 14) and wipe clean. DIPSTICK Figure 15. Engine Oil Dipstick (Oil Level) Season Summer Spring/Fall Winter Table 8. Oil Type Temperature Oil Type 25°C or Higher SAE 10W-30 25°C~10°C SAE 10W-30/20 0°C or Lower SAE 10W-10 Fuel Check DANGER If fuel is low, remove the fuel filler cap and fill it with unleaded gasoline. Motor fuels are highly flammable and can be dangerous if mishandled. DO NOT smoke while refueling. DO NOT attempt to refuel the trowel if the engine is hot! or running. 1. Visually inspect to see if fuel level is low. If fuel is low, replenish with unleaded fuel. 2. When refueling, be sure to use a strainer for filtration. DO NOT top-off fuel. Wipe up any spilled fuel immediately. Figure 14. Engine Oil Dipstick Removal 3. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick. PAGE 24 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Gearbox Oil 1. Determine if the gearbox oil is low by removing the oil plug located on the side of the gearbox. (Figure 16) This plug will be marked by the "check" decal. The correct level of the lubrication oil should be to the bottom of the fill plug. OIL SIGHT GLASS/ FILL PLUG GEARBOX DRAIN PLUG Figure 16. Gearbox 2. If lubrication oil begins to seep out as the drain plug is being removed, then it can be assumed that the gearbox has a sufficient amount of oil. 3. If lubrication oil does not seep out as the drain plug is being removed, fill with type ISO 680 (P/N 10139) gearbox lubricant oil until the oil filler hole overflows. V-BELT INSPECTION Visually examine the V-belt (Figure 17) and determine if it is full of tiny cracks, frayed, has pieces of rubber missing, is peeling or otherwise damaged. OIL SOAKED INSPECTION Also, examine the belt and determine if it is oil soaked or "glazed " (hard shiny appearance on the sides of the belt). Either of these two conditions can cause the belt to run hot, which can weaken it and increase the danger of it breaking. If the V-belt exhibits any of the referenced wear conditions replace the V-belt immediate. V-BELT TENSION The V-belt tension is proper if the V-belt bends 10 to 15 mm (Figure 18) when pressed with finger at midway between the clutch and lower pulley. CLUTCH PULLEY CORRECT V-BELT TENSION 10-15 MM WHEN DEPRESSED AS SHOWN. V-BELT LOWER PULLEY Figure 18. V-Belt Tension Belt Guard Check Check belt guard (Figure 19) for damage, loose or missing hardware. CRACK GLAZED CORD FAILURE WORN BACK COVER BROKEN CRACKS MISSING RUBBER SIDEWALL WEAR Figure 17. V-Belt Inspection MOUNTING HARDWARE MISSING HARDWARE CRACK Figure 19. Belt Guard Inspection J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 25 Blade Check Check for worn or damaged trowel blades (Figure 20). Check to see if one blade is worn out while the others look new. If this is the case there could be a blade pitch problem. Refer to the maintenance section of this manual for blade pitch adjustment procedure. Replace any worn blades. WORN WORN Figure 20. Trowel Blade Inspection WARNING NEVER disable or disconnect the centrifugal safety "stop" switch. It is provided for operator safety. Injury may result if it is disabled, disconnected or improperly maintained. Centrifugal Safety "STOP" Switch This trowel has been equipped with a centrifugal safety "stop" switch (Figure 21). This switch should be tested every time the engine is started. The switching mechanism of this switch should operate freely and should always be kept in this condition. With the switch in the OFF position, the engine should not start or run. The purpose of this switch is to stop the engine in a runaway situation, (i.e. the operator releasing the handle during operation). INSPECTION/OPERATION OFF ON CENTRIFUGAL SAFETY "STOP" SWITCH Figure 21. Centrifugal Safety "STOP" Switch Operation This section is intended to assist the operator with the initial start-up of the walk-behind trowel. It is extremely important that this section be read carefully before attempting to use the trowel in the field. DO NOT use your trowel until this section is thoroughly understood. Lifting the Trowel Onto a Slab Extra care should be taken when lifting the trowel off the ground. Serious damage to the machine or personal injury could be caused by dropping a trowel. WARNING NEVER attempt to lift this machine alone. NEVER lift the trowel by the guard ring as it may rotate and cause injury. ALWAYS make certain the handle is secure and use only the manufacturer's approved lifting point. The trowel may be lifted at the center lifting bale by crane or other lifting device of adequate capacity. NOTICE DO NOT attempt to operate the trowel until the Safety, General Information and Inspection sections of this manual have been read and thoroughly understood. PAGE 26 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) NOTICE The trowel is heavy and awkward to move around. Use proper heavy lifting procedures and DO NOT lift the trowel by the guard rings. Lifting Bale The lift bale provides an optimal lift point for lifting the trowel. When lifting the trowel onto a concrete slab, attach a chain or rope to the lifting bale. Make sure the lifting device has adequate lifting capacity to lift the trowel. Using a crane or forklift (Figure 22) to lift the trowel is highly recommended, and is perfectly safe for the trowel. ALWAYS use extra care when lifting the trowel off the ground. OPERATION Starting the Engine 1. Place the engine fuel valve lever (Figure 23) in the OPEN position. HONDA GX ROBIN-SUBARU FUEL VALVE LEVER OPEN FUEL VALVE CLOSE OPEN LEVER OPEN Figure 23. Engine Fuel Valve Lever (ON) 2. Place the engine ON/OFF switch (Figure 24) in the ON position LIFT Figure 22. Lifting the Trowel CAUTION NEVER lift the trowel to unnecessary heights. DO NOT stand underneath the trowel while it is being lifted. Serious damage to the machine or personal injury could be caused by dropping a trowel. ON ENGINE ON/OFF SWITCH Figure 24. Engine ON/OFF Switch (ON) 3. Pull the throttle lever (Figure 25) backwards and place in the "idle" position. IDLE THROTTLE LEVER Figure 25. Throttle (Idle Position) J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 27 4. Place the centrifugal safety "STOP" switch (Figure 26) in the "ON" position. HONDA GX OPERATION ROBIN-SUBARU OFF ON CENTRIFUGAL SAFETY "STOP" SWITCH Figure 26. Centrifugal Safety"Stop" Switch (ON) CAUTION NEVER disable or disconnect the centrifugal "STOP" switch. It is provided for the operator's safety and injury may result if it is disabled, disconnected or improperly maintained. 5. If starting a cold engine place the choke lever (Figure 27 ) in the CLOSED position. HONDA GX ROBIN-SUBARU CHOKE LEVER OPEN CHOKE LEVER CLOSE OPEN OPEN Figure 28. Choke Lever (Open) 7. Grasp the starter grip (Figure 29) and slowly pull it out. The resistance becomes the hardest at a certain position, corresponding to the compression point. Pull the starter grip briskly and smoothly for starting. STARTER GRIP CHOKE LEVER CLOSED CHOKE LEVER CLOSED CLOSE OPEN Figure 27. Choke Lever (Closed) 6. If starting a warm engine place the choke lever (Figure 28) in the "OPEN " position. Figure 29. Starter Grip 8. If the engine has started, slowly return the choke lever (Figure 27), cold start only to the CLOSED position. If the engine has not started repeat steps 1 through 6. 9. Before the trowel is placed into operation, run the engine for several minutes. Check for fuel leaks, and noises that would associate with a loose guard ring and/or covers. Testing the Centrifugal Safety Stop Switch 1. With the engine running at idle, place the safety stop switch lever in the "OFF" position (Figure 30). Verify that the engine shuts off. If the engine continues to run, replace centrifugal safety stop switch. PAGE 28 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) OFF Figure 30. Testing Safety Stop Switch 2. Before performing this test, clear the area around the trowel. Make sure it is free of debris and objects. Move the safety stop switch lever to the "ON" position, restart the engine and let idle. 3. Stand behind the handle and spin the handle to the right, simulating a runaway situation. (See Figure 31). Centrifugal force should throw the safety switch outward to the "OFF" position thus shutting off the engine. OPERATION Concrete Finishing Techniques The following steps are intended as a basic guide to machine operation, and are not to be considered a complete guide to concrete finishing. We suggest that all operators (experienced and novice) read "Slabs on Grade" published by the American Concrete Institute, Detroit, Michigan. Read the "Training" section of this manual for more information. Pitching the Blades (Standard Handle) To pitch the blades upwards using the "Standard" handle, (Figure 33) simply turn the star-wheel clockwise.Turning the star wheel counter clockwise will cause the blades to lay flat. BLADE PITCH STAR WHEEL INCREASE BLADE PITCH (CW) DECREASE BLADE PITCH (CCW) KEEP CLEAR Figure 31. Testing Safety Stop Switch Runaway Situation To Begin Troweling 1. To begin troweling, push the throttle lever (Figure 32) forward to the "RUN" position. RUN THROTTLE LEVER Figure 33. Blade Pitch Star Wheel Pitching the Blades (Quick PitchTM Handle) To pitch the blades upwards using the "Quick PitchTM" handle, (Figure 34) simply pull the T-handle backwards while squeezing the trigger. Pushing the T-handle forward will cause the blades to lay flat. T-HANDLE TRIGGER (SQUEEZE) NO PITCH (BLADES FLAT) Figure 32. Throttle Lever (Run) BLADES PITCHED UPWARDS FLAT Figure 34. Blade Pitch T-Handle J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 29 Maneuvering the Trowel 1. Get into the operator's position behind the handle. With a secure foothold and a firm grasp on the handle, slowly increase the engine speed until the desired blade speed is obtained. 2. Figure 35 below illustrates a typical walk-behind trowel application. Practice maneuvering the trowel. The trick is to let the trowel do the work. OPERATION 3. Continue to practice maneuvering the trowel. Try to practice as if you were finishing a slab of concrete. Practice edging and covering a large area. Remember a good finishing technique is to work backwards. Be careful when moving backwards so that hazards can be avoided. The best way to get accustomed to the trowel is repeated use. Figure 35. Maneuvering the Trowel CAUTION NEVER place your feet or hands inside the guard rings while starting or operating this equipment. CAUTION ALWAYS keep clear of rotating or moving parts while operating this equipment. PAGE 30 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Stopping The Engine 1. Move the throttle lever to the (Figure 36) IDLE position and run the engine for three minutes at low speed. IDLE OPERATION 3. Place the safety stop switch (Figure 38) in the OFF position. OFF THROTTLE LEVER Figure 36. Throttle Lever (Idle) 2. After the engine cools, place the engine ON/OFF switch to the OFF position (Figure 37). Figure 38. Safety Stop Switch (OFF) 4. Close the fuel shut- off valve (Figure 39) by moving the fuel valve lever to the OFF position. HONDA GX ROBIN-SUBARU OFF ENGINE ON/OFF SWITCH Figure 37. Engine ON/OFF Switch (OFF) FUEL VALVE LEVER CLOSED FUEL VALVE LEVER CLOSE OPEN CLOSED Figure 39. Fuel Valve Lever (OFF) J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 31 NOTICE Trowel blades should be changed when they fail to finish concrete in a satisfactory manner. Blades are a vital part of finishing concrete. This trowel, or finisher, has been designed to finish concrete and the blades are built to stringent quality standards out of the finest steel. If you need replacement blades, consult the parts list in this manual for part numbers and order them from your Multiquip parts dealer or importer. Combo Blades This trowel is equipped with combination float/finish (Figure 40) blades as original equipment. These blades have been designed for optimum performance in both the floating and finishing operations. These blades are versatile and should take care of most troweling needs. OPTIONS Clip-On Float Blades (Optional) These blades will clip (Figure 42) onto an existing installed blade, allowing your finisher to float on "wet" concrete so that the troweling operation can begin as early as possible. These blades are easily removable, so that after the floating operation, when the concrete is sufficiently cured, they can be removed to expose the finish blades for continued troweling. Figure 42. Clip-On Float Blade Float Discs (Optional) These round discs (Figure 43) attach to the spiders and allow the machine to "float" on "wet" concrete. The disc design allows early floating and easy movement from wet to dry areas. They are also very effective in embedding large aggregates and surface hardeners. Figure 40. Combination Blade Finish Blades (Optional) These blades (Figure 41) have been specifically designed for finish operations with this trowel. They will provide a premium surface finishing capability from your trowel. They should only be used after the concrete has set to the point where the trowel does not sink into the concrete when placed on it. Figure 41. Finish Blade Figure 43. Float Disk/Pan NOTICE For optimum panning performance blade speed must be changed. Use Low Speed Kit. Reference Engine Assembly in parts section of this manual. PAGE 32 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Trowel Arm Adjustment Tool (Optional) If blades show uneven wear patterns or some tend to wear out faster than others, the trowel arms may need to be adjusted. A special tool is available (Figure 44) that will adjust all of the trowel arms consistently. The Trowel Arm Fixture P/N is 1817. Figure 44. Trowel Arm Adjustment Fixture Quick PitchTM Handle (Optional) This feature (Figure 45) is not standard equipment on this model walk-behind trowel. To order this feature please contact MQ unit sales. T-HANDLE TRIGGER Figure 45. Quick PitchTM Handle (Option) The Quick PitchTM Handle feature allows the operator to adjust the pitch of the blades by grasping the handle, then squeezing the trigger lever and then moving the handle either forward or backwards to achieve the desired blade pitch. OPTIONS J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 33 MAINTENANCE Table 9. Engine Maintenance Schedule DESCRIPTION (3) OPERATION BEFORE EACH USE FIRST MONTH OR 20 HRS. EVERY 6 MONTHS OR 100 HRS. EVERY YEAR OR 300 HRS. Check X Engine Oil Change X X Engine Oil Filter Replace Every 200 Hrs. Check X Air Cleaner Clean X (1) Change Check/Adjust Spark Plugs Replace X X Spark Arrester Clean X Fuel Filter Replace X (2) Fuel Tube Check Every 2 years (replace if necessary) (2) * - Replace the paper filter element only. (1) Service more frequently when used in DUSTY areas. EVERY 2 YEARS OR 500 HRS. X (*) (2) These items should be serviced by your service dealer, unless you have the proper tools and are mechanically proficient. Refer to the HONDA/ROBIN-SUBARU Shop Manuals for service procedures. (3) For commercial use, log hours of operation to determine proper maintenance intervals. Table 10. Trowel Maintenance Schedule Periodic Maintenance Interval ITEM OPERATION DAILY Every Every Every 50-60 Hrs 200-300 Hrs 2000-2500 Hrs V-Belt Check/Replace X Relube Trowel Arms Grease X Blades Check/Replace X Trowel Arms Remove/Clean X Thrust Collar/Bushing Remove/Clean X Blade Arms Adjust X Arm Bushing Remove/Replace X Wear Ring Remove/Replace X Thrust Collar Bearing Remove/Replace X Pitch Control Cable Check X Clutch Remove/Clean X PAGE 34 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) General maintenance practices are crucial to the performance and longevity of your trowel. This equipment requires routine cleaning, blade and trowel arm inspection, lubrication and V-belt inspection for wear and damage. Reference Table 9 and Table 10 for scheduled engine and trowel maintenance. The following procedures, devoted to maintenance, can prevent serious trowel damage or malfunctioning. NOTICE Reference HONDA engine manual supplied with your trowel for more detailed engine maintenance and troubleshooting. CAUTION ALWAYS allow the engine to cool before servicing. NEVER attempt any maintenance work on a hot engine. CAUTION ALWAYS disconnect the spark plug wire from the spark plug and secure away from the engine before performing maintenance or adjustments on the machine. WARNING Some maintenance operations may require the engine to be run. Ensure that the maintenance area is well ventilated. Gasoline engine exhaust contains poisonous carbon monoxide gas that can cause unconsciousness and may result in DEATH MAINTENANCE GENERAL CLEANLINESS Clean the trowel daily. Remove all dust and slurry buildup. If the trowel is steam-cleaned, ensure that lubrication is accomplished AFTER steam cleaning. ENGINE CHECK Check daily for any oil and/or fuel leakage, thread nut and bolt tightness, and overall cleanliness. Engine Air Cleaner DANGER DO NOT use gasoline or low flash point solvents for cleaning the air cleaner, the possibility exists of fire or explosion which can cause damage to the equipment and severe bodily harm or even DEATH! CAUTION Wear protective equipment such as approved safety glasses or face shields and dust masks or respirators when cleaning air filters with compressed air. Both the Honda and Robin-Subaru engines are equipped with a replaceable, high-density paper air cleaner element. See Figure 46 and Figure 47 for air cleaner components. 1. Remove the air cleaner cover and foam filter element. 2. Tap the paper filter element several times on a hard surface to remove dirt, or blow compressed air not exceeding 30 psi (207 kPa, 2.1 kgf/cm2) through the filter element from the inside out. NEVER brush off dirt. Brushing will force dirt into the fibers. Replace the paper filter element if it is excessively dirty. 3. Clean foam element in warm, soapy water or nonflammable solvent. Rinse and dry thoroughly. Dip the element in clean engine oil and completely squeeze out the excess oil from the element before installing. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 35 MAINTENANCE ENGINE OIL 1. Drain the engine oil when the oil is warm as shown in Figure 48. 2. Remove the oil drain bolt and sealing washer and allow the oil to drain into a suitable container. 3. Replace engine oil with recommended type oil as listed in Table 8. For engine oil capacity, see Table 3 (engine specifications). DO NOT overfill. 4. Reinstall drain bolt with sealing washer and tighten securely. Figure 46. Engine Air Cleaner (Honda) Figure 47. Engine Air Cleaner (Robin-Subaru) NOTICE Operating the engine with loose or damaged air cleaner components could allow unfiltered air into the engine causing premature wear and failure. Figure 48. Draining Engine Oil SPARK PLUG NOTICE NEVER use a spark plug of incorrect heat range. 1. Remove and clean spark plug (Figure 49) with a wire brush if it is to be reused. Discard spark plug if the insulator is cracked or chipped. 2. Using a feeler gauge adjust spark plug gap to 0.028 ~0.031 inch (0.7~0.8 mm). 3. Thread spark plug into cylinder hole by hand to prevent cross-threading, then tighten securely. GAP .028 - .031 IN. (0.7- 0.8 MM.) Figure 49. Spark Plug Gap PAGE 36 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) V-BELT Visually examine the V-belt (Figure 50) and determine if it is full of tiny cracks, frayed, has pieces of rubber missing, is peeling or otherwise damaged. Also, examine the belt and determine if it is oil soaked or "glazed " (hard shiny appearance on the sides of the belt). Either of these two conditions can cause the belt to run hot, which can weaken it and increase the danger of it breaking. If the V-belt exhibits any of the above wear conditions replace the V-belt immediately. OIL SOAKED MAINTENANCE SPARK ARRESTER CLEANING Clean the spark arrester every 6 months or 100 hours. 1. Remove the 4 mm screw (3) from the exhaust deflector, then remove the deflector. See Figure 52 2. Remove the 5 mm screw (4) from the muffler protector, then remove the muffler protector. 3. Remove the 4 mm screw from the spark arrestor, then remove the spark arrester. GLAZED CORD FAILURE CRACKS SIDEWALL WEAR WORN BACK COVER BROKEN MISSING RUBBER Figure 50. V-Belt Inspection FUEL STRAINER 1. Thoroughly clean the area around the fuel cap. 2. Remove the fuel cap from the fuel tank. 3. Next, remove, inspect and clean the fuel strainer () with solvent. Figure 52. Spark Arrester Removal 4. Carefully remove carbon deposits from the spark arrester screen (Figure 53) with a wire brush. WIRE BRUSH Figure 51. Fuel Strainer SPARK ARRESTER SCREEN Figure 53. Cleaning The Spark Arrester 5. If the spark arrester is damaged and has breaks or holes, replace with a new one. 6. Reinstall the spark arrester and muffler protector in reverse order of disassembly. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 37 BLADE PITCH ADJUSTMENT PROCEDURE The maintenance adjustment of blade pitch is an adjustment that is made by a bolt (Figure 54) on the arm of the trowel arm lever. This bolt is the contact point of the trowel arm lever to the lower wear plate on the thrust collar. The goal of the adjustment is to promote consistent blade pitch and finishing quality. Adjustments are made by tightening or loosening the blade pitch adjustment bolt. BLADE PITCH ADJUSTMENT BOLT SPIDER PLATE TROWEL LEVER FINGER TROWEL ARM TROWEL BLADE Figure 54. Blade Pitch Adjustment Bolt Watch for the following indications when determining if blade pitch adjustments are necessary: · Is the machine wearing out blades unevenly, (i.e. one blade is completely worn out while the others look new)? · Does the machine have a perceptible rolling or bouncing motion when in use? · Look at the machine while it is running, do the guard rings "rock up and down" relative to the ground? If it is determined that blade pitch adjustments are required do the following: 1. Place the trowel on a flat, level area free of dirt and debris. NOTICE Before any blade pitch adjustments can be made it is essential to have a clean level area free of dirt and debris to test the trowel. Any unlevel spots in the floor or debris under the trowel blades will give an incorrect perception of adjustment. Ideally, a 5 x 5 ft. (1.5 x 1.5 meter), three-quarter inch (19 mm) thick FLAT steel plate should be used for testing. MAINTENANCE 2. Pitch the blades as flat as possible. The pitch adjustment bolts (Figure 55) should all barely make contact (0.10 inch max. clearance) with the lower wear plate on the spider. All pitch alignment bolts should be spaced the same distance from the lower wear plate. If one is not making contact, adjustment will be necessary. STEEL TEST SURFACE GEARBOX TROWEL ARM MOUNTING BAR BLADE PITCH ADJUSTMENT BOLT LOWER WEAR PLATE Figure 55. Correct Blade Pitch (Flat) 3. Adjust the "high" bolts down to the level of the one that is not touching, or adjust the "low" bolt up to the level of the higher ones. If possible, adjust the low bolt up to the level of the rest of the bolts. This is the fastest way, but may not always work. Verify after adjustment the blades pitch correctly. 4. Blades that are incorrectly adjusted often will not be able to pitch flat. This can occur if the adjusting bolts are raised too high. Conversely, adjusting bolts that are too low will not allow the blades to be pitched high enough for finishing operations. 5. If, after making blade pitch adjustments the machine is still finishing poorly, blades, trowel arms, and trowel arm bushings may be suspect and should be looked at for adjustment, wear, or damage. 6. Figure 56 illustrates, "incorrect alignment", worn spider bushings or bent trowel arms. PITCH ADJUSTMENT BOLT NO LOWER WEAR PLATE "DISHED" EFFECT ON FINISHED CONCRETE Figure 56. Incorrect Spider Plate Alignment PAGE 38 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) SPIDER REMOVAL Remove the spider assembly from the gearbox shaft as follows: 1. Locate the cone point square head set screw (Figure 57) and attached jam nut found on the side of the spider assembly. 2. Loosen the jam nut and cone point square head set screw. 3. Carefully lift the upper trowel/gearbox assembly off of the spider assembly. A slight tap with a rubber mallet may be necessary to dislodge the spider from the main shaft of the gearbox. GEARBOX GEARBOX SHAFT SET SCREW (CONE POINT SQ.HD.) JAM NUT YOKE ARM THRUST COLLAR BEARING WEAR RING THRUST COLLAR W/BUSHING LOWER WEAR PLATE SPIDER PLATE Figure 57. Spider Removal MAINTENANCE CHANGING BLADES It is recommended that ALL the blades on the trowel are changed at the same time. If only one or some of the blades are changed, the machine will not finish concrete consistently and the machine may wobble or bounce. Perform the following procedure when changing blades: Please note the blade orientation on the trowel arm before removing. 1. Lift the trowel up, placing blocks under the main guard ring to support it. 2. Remove the bolts and lock washers from all the towel arms, and then remove the blades as shown in Figure 58. BLADE ATTACHMENT SCREWS TROWEL ARM BLADE ATTACHMENT BAR TROWEL BLADE Figure 58. Blade Removal 3. Wire brush and remove all concrete and debris from all six sides of each of the four trowel arms. This is important to properly seat the new blades. 4. Install the new blades, maintaining the proper blade orientation for direction of rotation. 5. Reinstall the bolts and lock washers. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 39 TROWEL ARM REMOVAL 1. Each trowel arm is held in place at the spider plate by a hex head bolt (zerk grease fitting) and a roll pin. Remove both the hex head bolt and the roll pin (Figure 59) from the spider plate. 2. Remove the trowel arm from the spider plate. 3. Should the trowel arm inserts ( bushing ) come out with the trowel arm, remove the bushing from the trowel arm and set aside in a safe place. If the bushing is retained inside the spider plate, carefully remove the bushing 4. Examine the trowel arm bushing insert (Figure 59), clean if necessary. Replace bushing if out of round or worn. SPIDER PLATE ROLL PIN CAP ZERK GREASE FITTING BUSHING TROWEL ARM Figure 59. Trowel Arm Removal CHECKING TROWEL ARM STRAIGHTNESS Trowel arms (Figure 60) can be damaged by rough handling, such as dropping the trowel on the pad, or by striking exposed plumbing, forms, or rebar while in operation. A bent trowel arm will not allow the trowel to operate in a smooth fluid rotation. If bent trowel arms are suspect, check for flatness as follows: LEVER MOUNTING SLOT ROLL PIN HOLE BLADE ATTACHMENT BOLT HOLE FLAT OF HEXAGONAL SHAFT (TOP OF ARM) TROWEL ARM ROUND SHAFT SECTION TROWEL ARM HEXAGONAL (HEX) SHAFT SECTION Figure 60. Trowel Arm MAINTENANCE 1. Use a thick steel plate, granite slab or any surface which is true and flat, to check all six sides of each trowel arm for flatness (Figure 61). 2. Check each of the six sides of the trowel arm (hex section). A feeler gauge of .004 inch (0.10 mm) should not pass between the flat of the trowel arm and the test surface along its length on the test surface. TROWEL ARM FLAT TEST SURFACE FEELER GAUGE (.005 IN/0.127 MM) FEELER GAUGE (.004 IN/0.10 MM) Figure 61. Checking Trowel Arm Flatness 3. Next, check the clearance between the round shaft and the test surface as one of the flat hex sections of the arm rests on the test surface. Rotate the arm to each of the flat hex sections and check the clearance of the round shaft. Use a feeler gauge (Figure 62) of .005 inch (0.127 mm). Each section should have the same clearance between the round of the trowel arm shaft and the test surface. 4. If the trowel arm is found to be uneven or bent, replace the trowel arm. TROWEL ARM LEVER ADJUSTMENT The easiest and most consistent way to adjust the trowel arm lever is to use the Trowel Arm Adjustment Fixture (P.N. 1817). As each trowel arm is locked into the fixture, the arm bolt is adjusted to where it contacts a stop on the fixture. This will consistently adjust all of the trowel arms, keeping the finisher as flat and evenly pitched as possible. This fixture will allow consistent adjustment of the trowel arm lever. It comes with all the hardware necessary to properly accomplish this maintenance and instructions on how to properly utilize this tool. Adjusting the trowel arm lever without a fixture requires a special talent. Perform the following procedure when adjusting the trowel arm lever: PAGE 40 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) 1. Unscrew the locking bolts on the adjustment fixture and place the trowel arm (lever attached) into the fixture channel as shown in Figure 62. 2. Ensure the fixture arm is in the up position. 3. A thin shim may be required to cover the blade holes on the trowel arm. Make sure to align the trowel adjustment bolt with the fixture adjustment bolt. ARM TROWEL ARM LEVER FIXTURE ARM ADJUSTMENT BOLT SHIM ADJUSTMENT BOLT DISTANCE .010 INCH LOCKING BOLTS TROWEL ARM ADJUSTMENT FIXTURE Figure 62. Trowel Arm Adjustment Fixture 4. Use an allen wrench to tighten the locking bolts securing the trowel arm in place. 5. Adjust the bolt distance shown in Figure 62 to match one of the arms. The other arms will be adjusted to match this distance. 6. Loosen the locking nut on the trowel arm lever, then turn the trowel arm adjusting bolt until it barely touches (.010") the fixture adjusting bolt. 7. Once the correct adjustment is made, tighten the lock nut on the trowel arm to lock in place. 8. Loosen locking nuts on the adjustment fixture, and remove trowel arm. 9. Repeat steps for the remaining trowel arms. MAINTENANCE REASSEMBLY 1. Clean and examine the upper/lower wear plates and thrust collar. Examine the entire spider assembly. Wire brush any concrete or rust buildup. If any of the spider components are found to be damaged or out of round, replace them. 2. Make sure that the bronze trowel arm bushing is not damage or out of round. Clean the bushing if necessary. If the bronze bushing is damaged or worn, replace it. 3. Reinstall bronze bushing onto trowel arm. 4. Repeat steps 2 -3 for each trowel arm. 5. Make sure that the spring tensioner is in the correct position to exert tension on the trowel arm. 6. Insert all trowel arms with levers into spider plate (with bronze bushing already installed) using care to align grease hole on bronze bushing with grease hole fitting on spider plate. 7. Lock trowel arms in place by tightening the hex head bolt with zerk grease fitting and jam nut. 8. Reinstall the blades onto the trowel arms. 9. Install stabilizer ring onto spider assembly. 10. Reinstall lower wear plate, thrust collar and upper wear ring in the reverse order that they were disassembled onto the spider shaft. Make sure that there is little or no lateral movement between the thrust collar and the spider shaft. 11. Carefully lift the upper trowel assembly, line up the keyway on gear box main shaft and insert into spider J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 41 assembly. 12. Reinstall square head cone point into spider plate and tighten in place. Tighten jam nut. Use care in making sure point of set screw engages groove in gear box main shaft. 13. Lubricate all grease points (zerk fittings) with premium "Lithum 12" based grease, conforming to NLG1 Grade #2 consistency. INSTALLING PANS ONTO FINISHER BLADES These round discs, sometimes referred to as "pans", attach to the spiders arms and allow early floating on wet concrete and easy movement from wet to dry areas. They are also very effective in embedding large aggregates and surface hardeners. Refer to Figure 63 when installing pans onto finisher blades. MAINTENANCE LONG-TERM STORAGE For storage of the trowel for over 30 days, the following is required: Drain the fuel tank completely, or add STA-BIL to the fuel. Run the engine until the gasoline in the carburetor is completely consumed. Completely drain the oil from the crankcase and refill with fresh oil. Remove the spark plug. Pour 5 to 10 cc of SAE 30 oil into the cylinder. Turn the engine switch to the START position for a few seconds to distribute the oil. Reinstall the spark plug. Clean all external parts of the trowel with a cloth. Cover the trowel and store in a clean, dry place KNOB, TIE-DOWN Z-CLIP PANS TIE-DOWN, BLADE Z-CLIP, PAN BLADE ASSEMBLY Figure 63. Z-Clip Finisher Pan Installation 1. Lift trowel just enough to slide pan under blades. Lower finisher onto pan with blades adjacent to Z-Clips. 2. Rotate blades into position under Z-Clips. Ensure that the blades are rotated in the direction of travel when the machine is in operation or use the engine to rotate the blades into position. 3. Attach the blade tie-downs to the far side of the Z-Clip brackets with tie-down knobs as shown in Figure 63. 4. Check to make certain that the blade edges are secured under the Z-Clips and the tie-downs are secured completely over the edges of the blade bar before the machine is put back into operation. PAGE 42 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) TROUBLESHOOTING (ENGINE) Troubleshooting (Engine) Symptom Possible Problem Solution Spark plug bridging? Check gap, insulation or replace spark plug. Carbon deposit on spark plug? Clean or replace spark plug. Short circuit due to deficient spark plug insulation? Check spark plug insulation, replace if worn. Improper spark plug gap? Set to proper gap. Spark plug is red? Check transistor ignition unit. Difficult to start, fuel is available, but no spark at spark plug. Spark plug is bluish white? If insufficient compression, repair or replace engine. If injected air leaking, correct leak. If carburetor jets clogged, clean carburetor. No spark present at tip of spark plug? Check transistor ignition unit is broken, and replace defective unit. Check if voltage cord cracked or broken and replace. Check if spark plug if fouled and replace. No oil? Add oil as required. Oil pressure alarm lamp blinks upon starting? (if Check automatic shutdown circuit, "oil sensor". applicable) (if applicable) ON/OFF switch is shorted? Check switch wiring, replace switch. Difficult to start, fuel is available, and spark is present at the spark plug. Ignition coil defective? Improper spark gap, points dirty? Condenser insulation worn or short circuiting? Replace ignition coil. Set correct spark gap and clean points. Replace condenser. Spark plug wire broken or short circuiting? Replace defective spark plug wiring. Difficult to start, fuel is available, spark is present and compression is normal. Wrong fuel type? Water or dust in fuel system? Air cleaner dirty? Flush fuel system, replace with correct type of fuel. Flush fuel system. Clean or replace air cleaner. Choke open? Close choke. Suction/exhaust valve stuck or protruded? Reseat valves. Difficult to start, fuel is available, spark is present and compression is low. Piston ring and/or cylinder worn? Cylinder head and/or spark plug not tightened properly? Replace piston rings and/or piston. Torque cylinder head bolts and spark plug. Head gasket and/or spark plug gasket damaged? Replace head and spark plug gaskets. No fuel in fuel tank? Fill with correct type of fuel. No fuel present at carburetor. Fuel cock does not open properly? Fuel filter/lines clogged? Apply lubricant to loosen fuel cock lever, replace if necessary. Replace fuel filter. Fuel tank cap breather hole clogged? Clean or replace fuel tank cap. Air in fuel line? Bleed fuel line. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 43 TROUBLESHOOTING (ENGINE) Symptom Weak in power, compression is proper and does not misfire. Weak in power, compression is proper but misfires. Engine overheats Rotational speed fluctuates. Recoil starter malfunctions. (if applicable) Starter malfunctions. Burns too much fuel. Exhaust color is continuously "white". Exhaust color is continuously "black". Will not start, no power with key "ON". (if applicable) Troubleshooting (Engine) - continued Possible Problem Air cleaner dirty? Improper level in carburetor? Defective spark plug? Improper spark plug? Water in fuel system? Dirty spark plug? Ignition coil defective? Wrong type of fuel? Cooling fins dirty? Intake air restricted? Oil level too low or too high? Governor adjusted incorrectly? Governor spring defective? Fuel flow restricted? Recoil mechanism clogged with dust and dirt? Spiral spring loose? Loose, damaged wiring? Battery insufficiently charged? Starter damaged or internally shorted? Over-accumulation of exhaust products? Wrong spark plug? Lubricating oil is wrong viscosity? Worn rings? Air cleaner clogged? Choke valve set to incorrect position? Carburetor defective, seal on carburetor broken? Poor carburetor adjustment, engine runs too rich? ON/OFF device not activated ON? Battery disconnected or discharged? Ignition switch/wiring defective? Solution Clean or replace air cleaner. Check float adjustment, rebuild carburetor. Clean or replace spark plug. Set to proper gap. Flush fuel system and replace with correct type of fuel. Clean or replace spark plug. Replace ignition coil. Replace with correct type of fuel. Clean cooling fins. Clear intake of dirt and debris. Replace air cleaner elements as necessary. Adjust oil to proper level. Adjust governor. Replace governor spring. Check entire fuel system for leaks or clogs. Clean recoil assembly with soap and water. Replace spiral spring. Ensure tight, clean connections on battery and starter. Recharge or replace battery. Replace starter. Check and clean valves. Check muffler and replace if necessary. Replace spark plug with manufacturer's suggested type. Replace lubricating oil with correct viscosity. Replace rings. Clean or replace air cleaner. Adjust choke valve to correct position. Replace carburetor or seal. Adjust carburetor. Turn on ON/OFF device. Check cable connections. Charge or replace battery Replace ignition switch. Check wiring. PAGE 44 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) Symptom Engine running rough or not at all. Trowel bounces, rolls concrete, or makes uneven swirls in concrete. TROUBLESHOOTING (TROWEL) Troubleshooting (Walk-Behind Trowel) Possible Problem Solution Engine ON/OFF Switch in "OFF" position Make sure that the Engine ON/OFF Switch is ON or malfunctioning? or replace switch if necessary. Centrifugal ON/OFF Switch in "OFF" position or malfunctioning? Place centrifugal stop switch in "ON" position. Check wiring. Replace switch if necessary. Fuel? Look at the fuel system. Make sure there is fuel being supplied to the engine. Check to ensure that the fuel filter is not clogged. Ignition? Check to ensure that the ignition switch has power and is functioning correctly. Loose wire connections Check wiring. Replace or repair as necessary. Bad contacts in ON/OFF switch? Replace ON/OFF switch. Blades? Make certain blades are in good condition, not excessively worn. Finish blades should measure no less than 2"" (50mm) from the blade bar to the trailing edge, combo blades should measure no less that 3.5"" (89mm). Trailing edge of blade should be straight and parallel to the blade bar. Pitch adjustment? Check that all blades are set at the same pitch angle as measured at the spider. A field adjustment tool is available for height adjustment of the trowel arms. (Contact Parts Dept.) Bent trowel arms? Check the spider assembly for bent trowel arms. If one of the arms is even slightly bent, replace it immediately. Spider? Check fit of arms in spider. This can be done by moving the trowel arms up and down. If there is more than 1/8 inch (3.2 mm) of travel at the tip of the arm, the spider and arms should be replaced. Thrust collar? Check the flatness of the thrust collar by rotating it on the spider. If it varies by more than 0.02 inch (0.5 mm) replace the thrust collar. Thrust collar bushing? Check the thrust collar by rocking it on the spider. If it can tilt more than 3/32 inch (2.4 mm) - as measured at the thrust collar O.D., replace the thrust collar. Thrust bearing worn? Check the thrust bearing to see that it is spinning freely. Replace if necessary. J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 45 TROUBLESHOOTING (TROWEL) Symptom Machine has a perceptible rolling motion while running. Clutch slipping or sluggish response to engine speed change. Trowel blades do not rotate. Troubleshooting (Walk-Behind Trowel) - continued Possible Problem Solution Main shaft? The main output shaft of the gearbox assembly should be checked for straightness. The main shaft must run straight and cannot be more than 0.003"" (0.08 mm) out of round at the spider attachment point. Yoke? Check to make sure that both fingers of the yoke press evenly on the wear cap. Replace yoke as necessary. Blade Pitch? Check to ensure that each blade is adjusted to have the same pitch as all other blades. Adjust per maintenance section in manual. Worn V-belts? Replace V-belt. Hand clutch out of adjustment? Adjust per instructions in maintenance section of this manual. Worn or defective hand clutch parts? Replace parts as necessary. Worn bearings in gearbox? Rotate input shaft by hand. If shaft rotates with difficulty, check the input and output shaft bearings. Replace as necessary. Worn or broken gears in gearbox? Verify that the gearbox shaft rotates when the input shaft is rotated. Replace both the worm and worm gear as a set. Defective clutch? Replace clutch. Broken V-belt? Replace V-belt. Defective ON/OFF switch? Check and replace ON/OFF switch if necessary. Defective centrifugal ON/OFF switch? Check and replace centrifugal ON/OFF switch if necessary. PAGE 46 -- J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) WIRING DIAGRAM ON OFF CENTRIFUGAL STOP SWITCH YEL BLK OIL LEVEL SWITCH GRN OIL LEVEL INDICATOR YEL BLK OIL ALERT UNIT BLK ENGINE STOP SWITCH CHASSIS GND. UNIT TRANSISTORIZED IGNITION UNIT IGNITION COIL SPARK PLUG J36/B46-M30 SERIES WALK-BEHIND TROWELS · OPERATION MANUAL -- REV. #0 (10/27/16) -- PAGE 47 OPERATION MANUAL HERE'S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING UNITED STATES Multiquip Corporate Office 18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com Service Department Tel. (800) 421-1244 Fax (310) 537-3927 800-421-1244 310-537-3700 Technical Assistance Fax: 310-537-4259 800-478-1244 Fax: 310-943-2238 CANADA Multiquip 4110 Industriel Boul. Laval, Quebec, Canada H7L 6V3 Contact: jmartin@multiquip.com Tel: (450) 625-2244 Tel: (877) 963-4411 Fax: (450) 625-8664 MQ Parts Department 800-427-1244 310-537-3700 Fax: 800-672-7877 Fax: 310-637-3284 Warranty Department 800-421-1244 310-537-3700 Fax: 310-943-2249 UNITED KINGDOM Multiquip (UK) Limited Head Office Unit 2, Northpoint Industrial Estate, Globe Lane, Dukinfield, Cheshire SK16 4UJ Contact: sales@multiquip.co.uk Tel: 0161 339 2223 Fax: 0161 339 3226 © COPYRIGHT 2016, MULTIQUIP INC. Multiquip Inc, the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission. This manual MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold. The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published in this publication at any time without notice and without incurring any obligations. Your Local Dealer is: PN: 13401Adobe InDesign CC 2015 (Windows) Adobe PDF Library 15.0