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PROFESSIONAL PRESSURE WASHER
INSTRUCTION MANUAL

SIMPSON Professional Pressure Washer - sambol 1

DO NOT USE FUEL CONTAINING GREATER THAN 10% ETHANOL!

If your pressure washer is not working properly or if there are parts missing or broken, please DO NOT RETURN IT TO THE PLACE OF PURCHASE. Contact our customer service department at 1-877-362-4271 or www.simpsoncleaning.com
IMPORTANT: Please make certain that the person who is to use this equipment carefully reads and understands these instructions before operating.

SAVE THIS MANUAL FOR FUTURE REFERENCE
Part No. 7110656 RevC Aug 2019

SAFETY GUIDELINES – DEFINITIONS

This manual contains information that is important for you to know and understand. This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the symbols below. Please read the manual and pay attention to these symbols.
warning 2 DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury.
warning 2 WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
warning 2 CAUTION: Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury.
warning 2 NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.

IMPORTANT SAFETY INSTRUCTIONS

warning 2DANGER: Carbon Monoxide. Using an engine indoors can kill you in minutes. Engine exhaust contains high levels of carbon monoxide (CO), a poisonous gas you cannot see or smell. You may be breathing CO even if you do not smell engine exhaust.

  • NEVER use an engine inside homes, garages, crawlspaces, or other partly enclosed areas. Deadly levels of carbon monoxide can build up in these areas. Using a fan or opening windows and doors does NOT supply enough fresh air.
  • ONLY use outdoors and far away from open windows, doors, and vents. These openings can pull in engine exhaust.
  • Even when the engine is used correctly, CO may leak into your home. ALWAYS use a battery-powered or battery backup CO alarm in your house. Read and follow all directions for CO alarm before using. If you feel sick, dizzy or weak at any time, move to fresh air immediately. See a doctor. You could have carbon monoxide poisoning.

warning 2 WARNING: Do not operate this unit until you read this instruction manual and the engine instruction manual for safety, operation and maintenance instructions. If you have any questions regarding the product, please contact our customer service department at www.simpsoncleaning.com.
warning 2 DANGER: Risk of injection or severe injury. Keep clear of the nozzle. Do not direct discharge stream at persons or live animals. This product is to be used only by trained operators.
warning 2 WARNING: This product and its exhaust contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. In addition, some cleaning products and dust contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Wash hands after handling.
WARNING: This product may not be equipped with a spark-arresting muffler. If the product is not equipped and will be used around flam ma be ma Teri als or on land covered with materials such as agricultural crops, forest, brush, grass or other similar items, then an approved spark arrester must be installed and is legally required in the state of California. It is a violation of California statutes section 130050 and/or sections 4442 and 4443 of the California Public Resource es Code, unless the engine is equipped with a spark arrester, as defined in section 4442, and maintained in ef fec tive working order. Spark arresters are also required on some U.S. For est Service land and may also be legally required under other statutes and or di nancy es.

SAVE THESE INSTRUCTIONS

SIMPSON Professional Pressure Washer - sambol 2warning 2 DANGER: RISK OF EXPLOSION OR FIRE

WHAT CAN HAPPEN HOW TO PREVENT IT
•   Spilled gasoline and it’s vapors can become ignited from cigarette sparks, electrical arcing, exhaust gases and hot engine components such as the muffler. • Shut off the engine and allow it to cool before adding fuel to the tank.
• Use care in filling the tank to avoid spilling fuel. Move the pressure washer away from the fueling area before starting the engine.
• Heat will expand fuel in the tank which could result in spillage and possible fire explosion. • Keep maximum fuel level 1/2″ (12.7 mm) below the bottom of the filler neck to allow for expansion.
• Operating the pressure washer in an explosive environment could result in a fire. • Operate and fuel equipment in well-ventilated areas free from obstructions. Equip areas with fire extinguishers suitable for gasoline fires.
• Materials placed against or near the pressure washer can interfere with its proper ventilation features causing overheating and possible ignition of the materials. • Never operate the pressure washer in an area containing dry brush or weeds.
• Muffler exhaust heat can damage painted surfaces, melt any material sensitive to heat (such as siding, plastic, rubber, vinyl or the pressure hose, itself), and damage live plants. • Always keep the pressure washer a minimum of 4′ (1.2 m) away from surfaces (such as houses, automobiles, or live plants) that could be damaged from muffler exhaust heat.
• Improperly stored fuel could lead to accidental ignition. Fuel improperly secured could get into the hands of children or other unqualified persons. • Store fuel in an OSHA-approved container, in a secure location away from the work area.
•   Use of acids, toxic or corrosive chemicals, poisons, insecticides, or any kind of flammable solvent with this product could result in serious injury or death. •   Do not spray flammable liquids.

SIMPSON Professional Pressure Washer - sambol 3warning 2 DANGER: RISK TO BREATHING (ASPHYXIATION)

WHAT CAN HAPPEN HOW TO PREVENT IT
• Breathing exhaust fumes will cause serious injury or death! Engine exhaust contains carbon monoxide, an odorless and deadly gas. • Operate pressure washers in a well-ventilated area. Avoid enclosed areas such as garages, basements, etc.
• Never operate a unit in or near a location occupied by humans or animals.
• Some cleaning fluids contain substances that could cause injury to the skin, eyes, or lungs. • Use only cleaning fluids specifically recommended for high-pressure washers. Follow the manufacturer’s recommendations. Do not use chlorine bleach or any other corrosive compound.

SIMPSON Professional Pressure Washer - sambol 4warning 2 DANGER: RISK OF FLUID INJECTION AND LACERATION

WHAT CAN HAPPEN HOW TO PREVENT IT
• Your pressure washer operates at fluid pressures and velocities high enough to penetrate human and animal flesh which could result in amputation or another serious injury. Leaks caused by loose fittings or worn or damaged hoses can result in injection injuries. DO NOT TREAT FLUID INJECTION AS A SIMPLE CUT! See a physician immediately! • Inspect the high-pressure hose regularly. Replace the hose immediately if it is damaged, worn, has melted from contacting the engine, or shows any signs of cracks, bubbles, pinholes, or another leakage. Never grasp a high-pressure hose that is leaking or damaged.
• Never touch, grasp or attempt to cover a pinhole or similar water leak on the high-pressure hose. The stream of water IS under high pressure and WILL penetrate skin.
• Never place hands in front of the nozzle.
• Direct spray away from self and others.
• Make sure the hose and fittings are tightened and in good condition. Never hold onto the hose or fittings during operation.
• Do not allow the hose to contact the muffler.
• Never attach or remove wand or hose fittings while the system is pressurized.
• When using replacement lances or guns with this pressure washer, DO NOT use a lance and/or lance/gun combination that is shorter in length than what was provided with this pressure washer as measured from the nozzle end of the lance to the gun trigger.
• Injuries can result if system pressure is not reduced before attempting maintenance or disassembly. •  To relieve the system pressure, shut off the engine, turn off the water supply and pull the gun trigger until water stops flowing.
• Use only accessories rated equal to or higher than the rating of the pressure washer.

SIMPSON Professional Pressure Washer - sambol 5warning 2 DANGER: RISK OF INJURY FROM SPRAY

WHAT CAN HAPPEN HOW TO PREVENT IT
•   High-velocity fluid spray can cause objects to break, projecting particles at high speed. • Always wear ANSI-approved Z87.1 safety glasses. Wear protective clothing to protect against accidental spraying.
• Never point the wand at or spray people or animals.
• Light or unsecured objects can become hazardous projectiles. • Always secure the trigger lock when the wand is not in service to prevent accidental operation.
• Never permanently secure trigger in pull-back (open) position.

SIMPSON Professional Pressure Washer - sambol 6warning 2 DANGER: RISK OF UNSAFE OPERATION

WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafe operation of your pressure washer could lead to serious injury or death to you or others. • Do not use chlorine bleach or any other corrosive compound.
• Become familiar with the operation and controls of the pressure washer.
• Keep operating area clear of all persons, pets and obstacles.
• Do not operate the product when fatigued or under the influence of alcohol or drugs. Stay alert at all times.
• Never compromise the safety features of this product.
• Do not operate machines with missing, broken or unauthorized parts.
• ALWAYS keep guards or shields in place. Replace any that must be removed for service or that may be damaged.
• Never leave the wand unattended while the unit is running.
• If a proper starting procedure is not followed, the engine can kick back causing serious hand and arm injuries. • If the engine does not start after two pulls, squeeze the trigger of the gun to relieve pump pressure. Pull the starter cord slowly until resistance is felt. Then pull the cord rapidly to avoid kickback and prevent hand or arm injury.
• The spray gun/wand is a powerful cleaning tool that could look like a toy to a child. • Keep children away from the pressure washer at all times.
• Reactive force of spray will cause gun/ wand to kickback and could cause the operator to slip or fall or misdirect the spray. Improper control of gun/ wand can result in injuries to self and others. • Do not overreach or stand on unstable support.
• Do not use a pressure washer while standing on a ladder.
• Grip gun/wand firmly with both hands. Expect the gun to kick back when triggered.

SIMPSON Professional Pressure Washer - sambol 7warning 2 DANGER: RISK OF INJURY OR PROP ER TY DAMAGE WHEN TRANSPORTING OR STORING

WHAT CAN HAPPEN HOW TO PREVENT IT
• Fuel or oil can leak or spill and could result in fire or breathing hazards. Serious injury or death can result. Fuel or oil leaks will damage carpet, paint or other surfaces in vehicles or trailers.
• Oil could fill the cylinder and damage the engine if the unit is not stored or transported in an upright position.
• If a pressure washer is equipped with a fuel shut-off valve, turn the valve to the OFF position before transporting to avoid fuel leaks. If a pressure washer is not equipped with a fuel shut-off valve, drain the fuel from the tank before transporting. Only transport fuel in an OSHA-approved container.
• Always place a pressure washer on a protective mat when transporting to protect against damage to the vehicle from leaks.
• Always transport and storage the unit in an upright position. Remove the pressure washer from the vehicle immediately upon arrival at your destination.

SIMPSON Professional Pressure Washer - sambol 8warning 2 DANGER: RISK OF ELEC TRI CAL SHOCK

WHAT CAN HAPPEN HOW TO PREVENT IT
• Spray directed at electrical outlets or switches, or objects connected to an electrical circuit, could result in a fatal electrical shock. • Unplug any electrically operated product before attempting to clean it. Direct spray away from electric outlets and switches.

SIMPSON Professional Pressure Washer - sambol 9warning 2 DANGER: RISK OF CHEMICAL BURN

WHAT CAN HAPPEN HOW TO PREVENT IT
• Use of acids, toxic or corrosive chemicals, poisons,  insecticides, or any kind of flammable solvent with this product could result in serious injury or death. • Do not spray acids, gasoline, kerosene, or any other flammable materials with this product. Use only household detergents, cleaners and degreasers recommended for use with pressure washers.
• Wear protective clothing to protect eyes and skin from contact with sprayed materials.

GE APPLIANCES FCM9SRWW Manual Defrost Chest Freezer - iconwarning 2 WARNING: RISK OF BURSTING

• Over inflation of tires could result in serious injury and property damage. • Use a tire pressure gauge to check the tire pressure before each use and while inflating tires; see the tire sidewall for the correct tire pressure.
NOTE: Air tanks, compressors and similar equipment used to inflate tires can fill small tires similar to these very rapidly. Adjust the pressure regulator on air supply to no more than the rating of the tire pressure. Add air in small increments and frequently use the tire gauge to prevent overinflation.
• High-velocity fluid spray directed at pneumatic tire sidewalls (such as found on automobiles, trailers, and the like) could damage the sidewall resulting in serious injury. • On pressure washers rated above 1600 PSI (11032 kPa) use the widest fan spray (40º nozzle) and keep the spray a minimum of 8″ (20 cm) from the pneumatic tire sidewall. Do not aim spray directly at the joint between the tire and rim.

Accessorieswarning 2 WARNING: RISK OF HOT SURFACES

WHAT CAN HAPPEN HOW TO PREVENT IT
• Contact with hot surfaces, such as engine exhaust components, could result in a serious burn. • During operation, touch only the control surfaces of the pressure washer. Keep children away from the pressure washer at all times. They may not be able to recognize the hazards of this product.

SIMPSON Professional Pressure Washer - sambol 10warning 2 WARNING: RISK OF INJURY FROM LIFTING

WHAT CAN HAPPEN HOW TO PREVENT IT
• Serious injury and property damage can result from lifting heavy machines by hand. ·Do not lift heavy machines by hand.
• Serious injury and property damage can result from lifting machines with ropes, straps, chains, or other lifting devices without factory-installed lifting lugs or eyelets. • If your machine is not equipped with factory-installed lifting lugs or eyelets, contact your dealer to purchase and install an optional lifting lug kit, then refer to the lifting instructions insert for a proper lifting procedure.
• Serious injury and property damage can result from the incorrect use of factory-installed lifting lugs or eyelets when lifting machines. • If your machine is equipped with factory-installed lifting lugs or eyelets, refer to the lifting instructions insert for the proper lifting procedure.

SAVE THESE INSTRUCTIONS FOR FUTURE USE

GET TO KNOW THE PRESSURE WASHER

NOTE: Photographs and line drawings used in this manual are for reference only and do not represent a specific model. Compare the illustrations with your unit to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference.

BASIC ELEMENTS OF A PUMP
Refer to the pump manufacturer’s instructions for more information.
NOTICE: The high-pressure pump was filled with oil at the factory. Always check oil level before using. Refer to the pump manufacturer for maintenance instructions.
NOTICE: The high-pressure pump is shipped with a shipping plug. Before use remove the shipping plug and replace it with the supplied dipstick.
BASIC ELEMENTS OF THE GEAR BOX (if equipped)
Refer to the gearbox manufacturer’s instructions for more information.
NOTICE: The gearbox is shipped with a shipping plug. Before use remove the shipping plug and replace it with supplied dipstick/breather cap.
NOTICE: The gearbox was filled with lube at the factory. Always check the lube level before using. Refer to the gearbox manufacturer for maintenance instructions.
BASIC ELEMENTS OF AN ENGINE
Refer to the Engine Owner’s Manual for location and operation of engine controls.
NOTICE: The engine is shipped without oil. Before starting the engine, add the oil provided. Damage to the engine will occur if the engine is run without oil, this damage will not be covered under warranty.

ASSEMBLY INSTRUCTIONS (FIG. 2)

  1. Locate and remove all loose parts from the carton.
  2. Remove the colored quick-connect nozzles (K) from the plastic bag and insert them into the correct grommet on the nozzle holder (L). Nozzles are color coded to match colored nozzles on the label.
    SIMPSON Professional Pressure Washer - fig 1
  3. Connect wand (E) to the gun (D). Tighten securely.
  4. Attach a high-pressure hose (C) to the gun (D). Tighten se cure ly.

NOTICE: The engine is shipped without oil. Before starting the engine, add the oil provided. Damage to the engine will occur if the engine is run without oil, this damage will not be covered under warranty.
NOTICE: The high-pressure pump was filled with oil at the factory. Always check oil level before using (refer to Maintenance for more information).

IF EQUIPPED WITH AN ELECTRIC START

  1. Place the battery into the battery box. NOTE: Battery is not supplied, purchase a 12V garden tractor battery with an ampere rating of at least 18 AH.
  2. Make sure the battery boots are on the battery cables before connecting to the battery.
    a. Connect the positive (red) battery cable to the positive (+) battery terminal.
    IMPORTANT: ALWAYS CONNECT THE POSITIVE (RED) CABLE BEFORE CONNECTING THE NEGATIVE (BLACK) CABLE. NEVER CONNECT THE
    NEGATIVE (BLACK) CABLE FIRST.
    b. Connect the negative (black) battery cable to the negative (-) battery terminal.
    c. Grease the battery terminals and cable ends.
    Slide the batter boots over the battery terminals.

OPERATION

PRESSURE WASHER TERMINOLOGY
PSI: Pounds per Square Inch. The unit of measure for water pressure. Also used for air pressure, hydraulic pressure, etc.
GPM: Gallons per Minute. The unit of measure for the flow rate of water.
CU: Cleaning Units. GPM multiplied by PSI equals CU.
Bypass Mode: Allows water to re-circulate within the pump when the gun trigger is not pulled. This feature allows the operator to release the trigger gun and reposition themselves without having to turn the engine off in between cleaning actions.

warning 2WARNING: Do not allow the unit to run for more than two minutes without the gun trigger being pulled. This could cause overheating and damage to the pump. When the temperature inside the pump rises too high, the thermal relief valve will open and release a spray of water from the pump to lower the internal temperature. The valve will then close.
Thermal Relief Valve (P, Fig. 3): When the temperature inside the pump rises too high, this valve will open and release a gush of water in an effort to lower the temperature inside the pump. The valve will then close.
SIMPSON Professional Pressure Washer - fig 2Detergent Injection System: Mixes cleaners or cleaning solvents with the water to improve cleaning effectiveness.
Water Supply: All pressure washers must have a source of water. The minimum requirements for a water supply are 20 PSI and 5 Gallons Per Minute.
If your water source is a well, the garden hose length can only be 30 ft. (9 m) max.
warning 2WARNING: To reduce the possibility of contamination always protect
against backflow when connected to a potable water system.
PRESSURE WASHER OPERATING FEATURES  PRESSURE ADJUSTMENTS (FIG. 4)
The pressure setting is preset at the factory to achieve op ti mum pres sure and cleaning. If you need to lower the pressure, it can be accomplished by these methods.

  1. Back away from the surface to be cleaned. The further away you are, the less pressure will be on the surface to be cleaned.
  2. Change to the 40˚ nozzle (white). This nozzle delivers a less powerful stream of water and a wider spray pattern. Refer to How To Use Spray Wand.
  3. This pressure washer’s high-pressure pump is equipped with an additional feature that allows the pressure setting to be adjusted.
    To lower the pressure, turn the pressure control knob on the pump counter-clockwise to the desired pressure.
    To return the pump pressure to the factory setting, turn the pressure control knob on the pump clockwise until it stops.

SIMPSON Professional Pressure Washer - fig 3

NOTICE: DO NOT overtighten the pressure control knob, if overtightened the knob COULD break and result in immediate loss of water pressure and costly repairs to the unit.
HOW TO USE A SPRAY WAND
The nozzles for the spray wand are stored in the nozzle holder on the panel assembly. Colors on the panel identify nozzle location and spray pattern. Refer to the following chart to choose the correct nozzle for the job to be performed.

CHANGING NOZZLES ON SPRAY WAND (FIG. 5)
warning 2 DANGER: Risk of fluid injection. Do not direct discharge stream toward persons, unprotected skin, eyes or any pets or animals. A serious injury will occur.
warning 2 WARNING: Flying objects could cause a risk of serious injury. Do not attempt to change nozzles while the pressure washer is running. Turn the engine off before changing the nozzles.

  1. Pull quick-connect coupler (E) back and insert nozzle (K).
  2. Release the quick-connect coupler and twist the nozzle to make sure it is secure in the coupler.

SIMPSON Professional Pressure Washer - fig 4

warning 2 WARNING: Flying objects could cause a risk of serious injury. Ensure the nozzle is completely inserted in the quick-connect socket and the quick-connect collar is fully engaged(forward) before squeezing the gun trigger.

NOZZLE COLOR SPRAY PATTERN USES SURFACES*
 Red SIMPSON Professional Pressure Washer - fig 5 powerful pinpoint for spot cleaning of hard, unpainted surfaces or for high reach areas unpainted metal or concrete; DO NOT use on wood
 Yellow SIMPSON Professional Pressure Washer - fig 6 intense cleaning of unpainted hard surfaces grills, driveways, concrete or brick walkways, unpainted brick or stucco
 Green SIMPSON Professional Pressure Washer - fig 7 standard cleaning nozzle for most applications yard tools, sidewalks, lawn furniture, unpainted siding, stucco, gutters and eaves, concrete, brick surfaces
 White SIMPSON Professional Pressure Washer - fig 8 cleaning of painted or delicate surfaces auto/RV, marine, wood, painted brick and stucco, vinyl, painted siding
 

 Black

SIMPSON Professional Pressure Washer - fig 9 applies cleaning solutions The low-pressure spray is safe on all surfaces. Always verify compatibility of cleaning solution prior to use.
*NOTICE: The high-pressure spray from your pressure washer is capable of causing damage to surfaces such as wood, glass, automobile paint, auto striping and trim, and delicate objects such as flowers and shrubs. Before spraying, check the item to be cleaned to assure yourself that it is strong enough to resist damage from the force of the spray.

HOW TO APPLY CHEMICALS/CLEANING SOLVENTS (FIG. 6)
Applying chemicals or cleaning solvents is a low-pressure operation. NOTE: Use only soaps and chemicals designed for pressure washer use. Do not use bleach.
To Apply Chemicals:

  1. Ensure the detergent siphon hose (F, Figure 6) is attached to a barbed fitting location near the high-pressure hose connection of the pump as shown.
    SIMPSON Professional Pressure Washer - fig 10
  2. Place the other end of the detergent siphon hose with a filter on it into a container holding the chemical/cleaning solution. NOTE: For every 7 gallons of water pumped 1 gallon of chemical/cleaning solution will be used.
  3. Install low pressure (black) nozzle into quick connect fitting of spray wand, see the How To Use Spray Wand paragraph in this section.
  4. After the use of chemicals, place the detergent siphon hose into a container of clean water and draw clean water through a chemical injection system to rinse the system thoroughly. If chemicals remain in the pump, it could be damaged. Pumps damaged due to chemical residue will not be covered under warranty.

NOTE: Chemicals and soaps will not siphon if the black soap nozzle is not installed on the spray wand.

STARTING (FIG. 7–10)
warning 2 WARNING: To reduce the risk of injury, read the pressure washer instruction manual and the engine instruction manual before starting the pressure washer.
warning 2 DANGER: Risk of fluid injection and laceration. When using the high-pressure setting, DO NOT allow the high-pressure spray to come in contact with unprotected skin, eyes, or with any pets or animals. A serious injury will occur.

  • Your washer operates at fluid pressures and velocities high enough to penetrate human and animal flesh, which could result in amputation or another serious injury. Leaks caused by loose fittings or worn or damaged hoses can result in injection injuries. DO NOT TREAT FLUID INJECTION AS A SIMPLE CUT! See a physician immediately!

warning 2 DANGER: Carbon Monoxide. Using an engine indoors can kill you in minutes. Engine exhaust contains high levels of carbon monoxide (CO), a poisonous gas you cannot see or smell. You may be breathing CO even if you do not smell engine exhaust.

  • Breathing exhaust fumes will cause serious injury or death! En engine exhaust contains carbon monoxide, an odorless and deadly gas.
  • Operate pressure washers in a well-ventilated area. Avoid enclosed areas such as garages, basements, etc.
  • Never op er ate unit in or near a lo ca tion occupied by humans or animals.

WARNING: Risk of Fire, Asphyxiation, and Burn. Never fill the fuel tank when the engine is running or hot. Do not smoke when filling the fuel tank.

  • Never fill the fuel tank completely. Fill tank to 1/2″ (12.7  mm) below the bottom of the filler neck to provide space for fuel expansion. Wipe any fuel spillage from the engine and equipment before starting the engine.
  • DO NOT let hoses come in contact with a very hot engine muffler during or immediately after the use of your pressure washer. Damage to hoses from contact with hot engine surfaces will NOT be covered by warranty.

NOTICE: Risk of property damage. Never pull the water supply hose to move the pressure washer. This could damage the hose and/or pump inlet.

  • DO NOT use hot water, use cold water only.
  • Never turn the water supply off while the pressure washer engine is running or damage to the pump will result.
  • DO NOT stop spraying water for more than two minutes at a time. The pump operates in bypass mode when the spray gun trigger is not pressed. If the pump is left in bypass mode for more than two minutes internal components of the pump can be damaged.

If you do not understand these precautions, please contact our customer service department at www.simpsoncleaning.com
Prior to starting, refer to your engine manual for the proper starting procedure.

  1. In a well-ventilated outdoor area add fresh, high-quality, unleaded gasoline with a pump octane rating of 86 or higher. Do not overfill. Wipe up spilled fuel before starting the engine. Refer to Engine Owner’s Manual for the correct procedure.
    IMPORTANT: Ethanol Shield™ (sold separately) is a fuel stabilizer that helps eliminate and prevent ethanol-related problems in power equipment. Follow the instructions on the container and add to the gasoline.
    SIMPSON Professional Pressure Washer - fig 11 NOTICE: The use of fuels with greater than 10% ethanol are not approved for use in this product per EPA regulations and will damage the unit and void the warranty.
  2. Check engine oil level. Refer to Engine Owner’s Manual for the correct procedure.
  3. Check the pump oil level. The oil level should come to the dot in the middle of the sight glass. Refer to the Pump paragraph under Maintenance.
  4. Connect the water hose to the water source. Turn the water source on to remove all air from the hose. When a steady stream of water is present, turn the water source off.
  5. Verify the filter screen (M) is in the water inlet of the pump. NOTE: Convex side faces out.
  6. Connect water source (N) to pump inlet (J). NOTE: The water source must provide a minimum of 5 gallons per minute at 20 PSI.
  7. Connect high-pressure hose (C) to pump outlet (I).
    SIMPSON Professional Pressure Washer - fig 12warning 2WARNING: To reduce the possibility of contamination always protect against backflow when connected to a potable water system.
  8. Choose the correct nozzle for the job to be performed. See How To Use spray Wand instructions in this section.
    NOTE: If applying a chemical or cleaning solution, see the How To Apply Chemicals/Cleaning Solvents instructions in this section.
  9.  Turn the water source on.
    NOTICE: Risk of property damage. Failure to do so could cause damage to the pump.
  10. Remove all air from the pump and high-pressure hose by depressing the trigger until a steady stream of water is present.
  11. Start the engine. See Engine Owner’s Manual for correct procedure.
    warning 2 WARNING: Risk of unsafe operation. If the engine does not start after two pulls, squeeze the trigger of the gun to relieve pump pressure. Pull the starter cord slowly until resistance is felt. Then pull the cord rapidly to avoid kickback and prevent hand or arm injury.
    NOTE: If the oil level in the engine is low, the engine will not start. If the engine does not start, check the oil level and add oil as needed.
  12. Depress the trigger on the gun to start the water flow.
    warning 2 WARNING: Do not allow the unit to run for more than two minutes without the gun trigger being pulled. This could cause overheating and damage to the pump. When the temperature inside the pump rises too high, the thermal relief valve will open and release a spray of water from the pump to lower the internal temperature. The valve will then close.
    warning 2 WARNING: Risk of unsafe operation. Stand on a stable surface and grip the gun/spray wand firmly with both hands. Expect the gun to kick when triggered.
  13. Release the trigger to stop the water flow.
    warning 2 WARNING: Risk of injury from the spray. Always engage 10 the trigger lock (O) when the gun is not in use. Failure to do so could cause accidental spraying.

SIMPSON Professional Pressure Washer - fig 13

SHUTTING DOWN

  1. After each use, if you have applied chemicals, place the detergent siphon hose into a container of clean water and draw clean water through a chemical injection system to rinse the system thoroughly.
    NOTICE: Risk of property damage. Failure to do so could cause damage to the pump.
  2. Turn the engine off. See Engine Owner’s Manual.
    NOTICE: Risk of property damage. NEVER turn the water off with the engine running.
  3. Turn the water source off.
  4. Pull the trigger on the spray gun to relieve any water pressure in the hose or spray gun.
    NOTE: Failure to release system pressure will prevent the removal of a high-pressure hose from a spray gun or pump connection.
  5. See the Storage section in this manual for proper storage procedures.

MAINTENANCE

warning 2WARNING: Risk of a burn hazard. When performing maintenance, you may be exposed to hot surfaces, water pressure or moving parts that can cause serious injury or death.
warning 2 WARNING: Risk of fire hazard. Always disconnect, the spark plug wire, let the engine cool and release all water pressure before performing any maintenance or repair. The engine contains flammable fuel. Do not smoke or work near open flames while performing maintenance.
To ensure efficient operation and longer life of your pressure washer, a routine maintenance schedule should be prepared and followed. If the pressure washer is used in unusual conditions, such as high temperatures or dusty conditions, more frequent maintenance checks will be required.
ENGINE
Consult the Engine Owner’s Manual for the manufacturer’s recommendations for any and all maintenance. NOTE: The engine drain plug is located at the rear of the unit.

PUMP (FIG. 11)
NOTE: The Pump was filled with oil at the factory. The preferred oil is SIMPSON® Premium Pump Crankcase Oil. If this oil is not available, an SAE 15W-40 oil may be used. Change the pump oil after the first 50 hours of operation and every 100 hours thereafter, or every 3 months.

TO CHECK OIL
The oil level should come to the dot in the middle of the sight glass (AA).

SIMPSON Professional Pressure Washer - fig 14

HOW TO CHANGE PUMP OIL

  1. Loosen pump oil fill plug (BB).
  2. Place a container under the pump oil drain plug (CC).
  3. Remove the pump oil drain plug.
  4. After oil is drained, replace the pump oil drain plug. Tighten securely.
  5. Refill pump using SIMPSON® Premium Pump Crankcase Oil. If this oil is not available, an SAE 15W-40 oil may be used.
  6. Replace the pump oil fill plug and tighten it securely.
    If there is a problem with the pump contact us at www.simpsoncleaning.com

CONNECTIONS
Connections on pressure washer hoses, guns, and spray wand should be cleaned regularly and lubricated with light oil or lithium grease to prevent leakage and damage to the O-rings.
NOZZLE CLEANING (FIG. 12)
If the nozzle becomes clogged with foreign materials, such as dirt, excessive pressure may develop. If the nozzle becomes partially clogged or restricted, the pump pressure will pulsate. Clean the nozzle immediately using the nozzle kit supplied and the following instructions:

  1. Shut off the pressure washer and turn off the water supply.
  2. Pull the trigger on the gun handle to relieve any water pressure.
  3. Disconnect the spray wand from the gun.
  4. Remove the high-pressure nozzle (K) from the spray wand.
    Remove any obstructions with the nozzle cleaning tool provided and backflush with clean water.
  5. Direct water supply (N) into the nozzle to backflush loosened particles for 30 seconds.
  6. Reassemble the nozzle to the wand.
  7. Reconnect the spray wand to the gun and turn on the water supply.
  8. Start pressure washer and place spray wand into high pressure setting to test.

SIMPSON Professional Pressure Washer - fig 15

CLEAN THE WATER INLET FILTER (FIG. 7)
This screen filter should be checked periodically and cleaned if necessary.

  1. Remove the filter by grasping the end and removing it from the water inlet of the pump.
  2. Clean the filter by flushing it with water on both sides.
  3. Re-insert filter into water inlet of the pump.
    NOTE: Convex side faces out.
    NOTE: Do not operate the pressure washer without the filter properly installed.

STORAGE

ENGINE
Consult the Engine Owner’s Manual for the manufacturer’s recommendations for storage.
TO PREVENT FUEL-RELATED PROBLEMS

  1. Add Ethanol Shield™ fuel stabilizer following the manufacturer’s instructions. When adding a gasoline stabilizer, fill the fuel tank with fresh gasoline. If only partially filled, the air in the tank will promote fuel deterioration during storage. If you keep a container of gasoline for refueling, be sure that it contains only fresh gasoline.
  2. After adding a gasoline stabilizer, run the engine outdoors for 10 minutes to be sure that treated gasoline has replaced the untreated gasoline in the carburetor.
  3. Turn the fuel valve to the OFF position.
  4. Continue to run the engine until it stops from the lack of fuel in the carburetor fuel bowl. Running time should be less than 3 minutes.

PUMP
The manufacturer recommends using SIMPSON®/ POWERWASHER® Pump Guard or equivalent when storing the unit for more than 30 days and/or when freezing temperatures are expected. SIMPSON®/ POWERWASHER® Pump Guard is environmentally friendly.
NOTE: Using a pump guard helps provide proper lubrication to the internal seals of the pump regardless of temperature or environment.

NOTICE: Risk of property damage. Use only SIMPSON®/ POWERWASHER®
Pump Guard or equivalent. Other products could be corrosive and/or contain alcohol which may cause pump damage.

  1. Turn off the pressure washer and disconnect the hoses from the pump.
  2. Unscrew the bottle valve from the Pump Guard bottle and remove the seal.
  3. Screw the bottle valve back onto the bottle.
  4. Attach the bottle to the water inlet of the pump.
  5. Squeeze the bottle to inject contents into the pump.
  6. With the ignition switch off, simultaneously pull the starter rope and squeeze the bottle. Repeat until the protector fluid exits the pump outlet.
    NOTE: This step may require two people.

ACCESSORIES

warning 2 DANGER: Risk of fluid injection. When using replacement spray wands or guns with this pressure washer, DO NOT use a spray wand and/or spray gun/ wand combination that is shorter in length than what was provided with this pressure washer as measured from the nozzle end of the wand to the gun trigger.
NOTICE: The use of any other accessory not recommended for use with this tool could be hazardous. Use only accessories rated equal to or greater than the rating of the pressure washer.

SPECIFICATIONS

* Rated Pressure and Rated Water Flow is within manufacturing tolerance of (+/- 10%). In a continued commitment to improving quality, the manufacturer reserves the right
to make component changes, design changes, or specification changes when necessary and without notice.

SERVICE INFORMATION

Do not return this product to your retailer. Please contact our customer service department at www.simpsoncleaning.com

LIMITED WARRANTY

The manufacturer of this product agrees to repair or replace designated parts that prove defective within the warranty period listed below at the manufacturer’s sole discretion. Specific limitations/extensions and exclusions apply. This warranty covers defects in material and workmanship and not parts failure due to normal wear, depreciation, abuse, accidental damage, negligence, improper use, maintenance, water quality or storage. To make a claim under the terms of the warranty, all parts said to be defective must be retained and available for return upon request to a designated Warranty Service Center for warranty inspection. The judgments and decisions of the manufacturer concerning the validity of warranty claims are final.

These warranties pass through to the end user and are non-transferable. As a factory-authorized and trained Warranty Service Center, the factory will honor the terms of all component warranties and satisfy claims of the appropriate warranty provisions. Normal wear items include, but are not limited to, valves and seals, which are not covered by this warranty.
This warranty replaces all other warranties, express or implied, including without limitation any warranties of merchantability or fitness for a particular purpose, and all such warranties are hereby disclaimed and excluded by the manufacturer. The manufacturer’s warranty obligation is limited to repair and replacement of defective products as provided herein and the manufacturer shall not be liable for any further loss, damages, or expenses – including damages from shipping, accident, abuse, acts of God, misuse, or neglect. Neither is damage from repairs using parts not purchased from the manufacturer or alterations performed by non-factory authorized personnel. Failure to install and operate equipment according to the guidelines put forth in the instruction manual shall void the warranty.

This warranty does not cover the following: machines used for rental purposes, damage resulting from shipping (claims must be filed with freighter), accident, abuse, act of God, misuse, or neglect. Neither is damage from repairs or alterations performed by non-factory authorized personnel or failure to install and operate equipment according to the guidelines put forth in the instruction manual. The manufacturer will not be liable to any persons for consequential damage, for personal injury, or for commercial loss.

WARRANTY DOES NOT APPLY TO FAILURES DUE TO:

  • Freight damage
  • Damage due to chemical deterioration, scale build-up, rust, corrosion or thermal expansion
  • Freeze damage
  • Damage caused by parts or accessories not obtained from an authorized dealer or not approved by the manufacturer.
  • Normal wear of moving parts or components affected by moving parts.

ENGINE
Covered by engine manufacturer warranty. See engine manual.
HIGH-PRESSURE PUMP (DEFECTS IN MATERIAL AND WORKMANSHIP)
Covered by pump manufacturer warranty.
FRAME (DEFECTS IN MATERIAL AND WORKMANSHIP)
Ten (10) years from date of purchase.
ACCESSORIES (DEFECTS IN MATERIAL AND WORKMANSHIP)
Includes nozzles, hoses, spray guns, wands, tires, feet Ninety (90) days from date of purchase.

TROUBLESHOOTING GUIDE

OPERATIONAL ISSUE POSSIBLE CAUSE SOLUTION
Engine will not start (see Engine Owner’s Manual for further engine troubleshooting) No fuel Add fresh fuel
Pressure builds up after two pulls on the recoil starter or after initial use Squeeze gun trigger to relieve pressure
Choke lever in the “No Choke” position Move choke to the “Choke” position
Spark plug wire not attached Attach spark plug wire
No or low pressure (initial use) Spray wand not in high pressure See How to Use Spray Wand instructions in the Operation Section
Low water supply Water supply must be at least 5 GPM @ 20 PSI
Leak at high-pressure hose fitting Repair leak. Apply sealant tape if necessary
Nozzle obstructed See Nozzle Cleaning instructions in the Maintenance section
The water filter screen clogged Remove and clean the filter. See the Cleaning Water Inlet Filter paragraph in the Maintenance section for the correct procedure
Air in hose Turn off the engine, then the water source. Disconnect the water source from the pump inlet and turn the water source on to remove all air from the hose. When there is a steady stream of water present, turn the water source off. Re-con- next water source to pump inlet and turn on the water source. Squeeze trigger to remove remaining air
Choke in the “Choke” position Move choke to the “No Choke” position
High-pressure hose is too long Use high-pressure hose under 100 feet (30 m)
Will not draw chemicals Spray wand not in low pressure See How to Use Spray Wand paragraph in the Operation Section
Chemical filter clogged Clean filter
Chemical screen not in cleaning solution Make sure the end of the detergent siphon hose is fully submerged in cleaning solution
Chemical too thick Dilute chemical. Chemical should be the same consistency as water
The pressure hose is too long Lengthen water supply hose instead of high-pressure hose
OPERATIONAL ISSUE POSSIBLE CAUSE SOLUTION
Will not draw chemicals The chemical build-up in the chemical injector Please contact our customer service department at www.simpsoncleaning.com
No or low pressure (after a period of normal use) Worn seal or packing Please contact our customer service department at www.simpsoncleaning.com
Worn or obstructed valves Please contact our customer service department at www.simpsoncleaning.com
Worn unloader piston Please contact our customer service department at www.simpsoncleaning.com
Broken belts Replace belts. Please contact our customer service department at www.simpsoncleaning.com
Water leaking at gun/spray wand connection Worn or torn o-ring Check and replace
Loose hose connection Tighten
Water leaking at pump Loose connections Tighten
Piston packings worn Please contact our customer service department at www.simpsoncleaning.com
Worn or torn o-ring Please contact our customer service department at www.simpsoncleaning.com
Pump head or tubes damaged from freezing Please contact our customer service department at www.simpsoncleaning.com
Pump pulsates Nozzle obstructed See the Nozzle Cleaning paragraph in the Maintenance section for the correct procedure
Oil leaking at the pump Oil seals worn Please contact our customer service department at www.simpsoncleaning.com
Loose drain plug Tighten
Worn     drain      plug o-ring Check and replace
Worn fill plug o-ring Check and replace
Pump overfilled Check for the correct amount
Incorrect oil used Drain and fill with the correct amount and type of oil
The vent plug is clogged Clean the vent plug; blow air through it to remove any blockage. If the problem persists, replace the plug
Air filter filled with oil Clean and/or replace filter element. Refer to Engine Owner’s Manual for the correct procedure.

SIMPSON logo

FNA Group, Inc.
7152 99th Street
Pleasant Prairie, WI 53158
Internet Address: www.simpsoncleaning.com
Warranty Registration via Internet
Copyright. All Rights Reserved
Assembled in the U.S.A with domestic and foreign components

Documents / Resources

SIMPSON Professional Pressure Washer [pdf] Instruction Manual
Professional Pressure Washer, Professional Washer, Washer, Pressure Washer

References

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