TROY-BILT Operator's Manual

Introduction

Thank You

Thank you for purchasing this quality Troy-Bilt product. This modern outdoor power tool is designed to provide many hours of useful service and be a great labor-saving device. This operator's manual offers easy-to-understand operating instructions. Read the entire manual and follow all instructions to maintain your new outdoor power tool in top operating condition.

Product References, Illustrations, and Specifications

All information, illustrations, and specifications in this manual are based on the latest product information available at the time of printing. MTD Southwest Inc. reserves the right to make changes at any time without notice.

Copyright© 2004 MTD SOUTHWEST INC, All Rights Reserved.

Service Information

Service on this unit, both within and after the warranty period, should be performed only by an authorized and approved service dealer.

For service, call 1-800-520-5520 to obtain a list of authorized service dealers near you. For more details about your unit, visit the Troy-Bilt website at www.troybilt.com.

DO NOT RETURN THE UNIT TO THE RETAILER. PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.

Before beginning, locate the unit's model plate. It lists the model and serial numbers. Refer to the sample plate below and copy the information for future reference.

Spark Arrestor Note

NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon, and Washington, certain internal combustion engines operated on forest brush and/or grass-covered areas are required by law to be equipped with a spark arrestor, maintained in effective working order, or be constructed, equipped, and maintained for fire prevention. Check with state or local authorities for regulations. Failure to follow these requirements could result in liability or a fine. This unit is factory-equipped with a spark arrestor. If replacement is needed, ask your LOCAL SERVICE DEALER to install Accessory Part #753-04689 Spark Arrestor Kit.

California Proposition 65 Warning

Table of Contents

• Service Information
• Rules for Safe Operation
• Know Your Unit
• Assembly Instructions
• Oil and Fuel Information
• Starting/Stopping Instructions
• Operating Instructions
• Maintenance and Repair Instructions
• Cleaning and Storage
• Accessories and Replacement Parts
• Troubleshooting Chart
• Specifications
• Warranty Information
• Parts List (Inside Back Cover)

Important Safety Instructions

Read All Instructions Before Operating

• Read the instructions carefully. Be familiar with the controls and proper use of the unit.
• Do not operate this unit when tired, ill, or under the influence of alcohol, drugs, or medication.
• Children and teens under the age of 15 must not use the unit, except for teens guided by an adult.
• All guards and safety attachments must be installed properly before operating the unit.
• Inspect the unit before use. Replace damaged parts. Check for fuel leaks. Make sure all fasteners are in place and secure. Replace parts that are cracked, chipped, or damaged in any way. Do not operate the unit with loose or damaged parts.
• Carefully inspect the area before starting the unit. Remove all debris and hard or sharp objects such as glass, wire, etc.
• Be aware of the risk of injury to the head, hands, and feet.
• Clear the area of children, bystanders, and pets. At a minimum, keep all children, bystanders, and pets outside a 50 feet (15 m) radius; there still may be a risk to bystanders from thrown objects. Bystanders should be encouraged to wear eye protection. If approached, stop the unit immediately.
• Use only 0.095 inch (2.41 mm) diameter original equipment manufacturer replacement line. Never use metal-reinforced line, wire, or rope. These can break off and become dangerous projectiles.
• Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs before using unit.

Safety Warnings for Gas Units

• Store fuel only in containers specifically designed and approved for the storage of such materials.
• Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

Rules for Safe Operation (Continued)

• Always stop the engine and allow it to cool before filling the fuel tank. Never remove the cap of the fuel tank, or add fuel, when the engine is hot. Never operate the unit without the fuel cap securely in place. Loosen the fuel tank cap slowly to relieve any pressure in the tank.
• Mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Slowly remove the fuel cap only after stopping the engine. Do not smoke while fueling or mixing fuel. Wipe up any spilled fuel from the unit immediately. Always wipe unit dry before using.
• Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke or allow sparks and open flames near the area while adding fuel or operating the unit.

While Operating

• Never start or run the unit inside a closed room or building. Breathing exhaust fumes can kill. Operate this unit only in a well-ventilated outdoor area.
• Wear safety glasses or goggles that are marked as meeting ANSI Z87.1-1989 standards. Also wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty. Long sleeve shirts are recommended.
• Wear heavy, long pants, boots, and gloves. Do not wear loose clothing, jewelry, short pants, sandals, or go barefoot. Secure hair above shoulder level.
• The cutting attachment shield must always be in place while operating the unit. Do not operate unit without both trimming lines extended, and the proper line installed. Do not extend the trimming line beyond the length of the shield.
• This unit has a clutch. The cutting attachment remains stationary when the engine is idling. If it does not, have the unit adjusted by an authorized service technician.
• Adjust the D-handle to your size to provide the best grip.
• Be sure the cutting attachment is not in contact with anything before starting the unit.
• Use the unit only in daylight or good artificial light.
• Avoid accidental starting. Be in the starting position whenever pulling the starter rope. The operator and unit must be in a stable position while starting.
• Use the right tool. Only use this tool for the purpose intended.
• Do not overreach. Always keep proper footing and balance.
• Always hold the unit with both hands when operating. Keep a firm grip on both the front and rear handle or grips.
• Keep hands, face, and feet at a distance from all moving parts. Do not touch or try to stop the cutting attachment when it is rotating.
• Do not touch the engine or muffler. These parts get extremely hot from operation. They remain hot for a short time after you turn off the unit.
• Do not operate the engine faster than the speed needed to cut, trim, or edge. Do not run the engine at high speed when you are not cutting.
• Always stop the engine when cutting is delayed or when walking from one cutting location to another.
• If you strike or become entangled with a foreign object, stop the engine immediately and check for damage. Do not operate before repairing damage. Do not operate the unit with loose or damaged parts.
• Stop and switch the engine to off for maintenance, repair, or for changing the cutting attachment or other attachments.
• Use only original equipment manufacturer replacement parts and accessories for this unit. These are available from your authorized service dealer. Use of any unauthorized parts or accessories could lead to serious injury to the user, or damage to the unit, and void your warranty.
• Keep unit clean of vegetation and other materials. They may become lodged between the cutting attachment and shield.
• To reduce fire hazard, replace faulty muffler and spark arrestor, keep the engine and muffler free from grass, leaves, excessive grease, or carbon build-up.

Other Safety Warnings

• Never store the unit, with fuel in the tank, inside a building where fumes may reach an open flame or spark.
• Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.
• Store the unit in a dry area, locked up or up high to prevent unauthorized use or damage, out of the reach of children.
• Never douse or squirt the unit with water or any other liquid. Keep handles dry, clean, and free from debris. Clean after each use.
• Keep these instructions. Refer to them often and use them to instruct other users. If you loan someone this unit, also loan them these instructions.

SAVE THESE INSTRUCTIONS

Safety and International Symbols

This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating, maintenance, and repair information.

Know Your Unit

Applications

As a trimmer, this unit is used for:

• Cutting grass and light weeds.
• Edging.
• Decorative trimming around trees, fences, etc.

Other optional accessories may be used with the TB75SS and TB25CS. Refer to Operating the EZ-Link System for a list of add-ons.

Key Components (Refer to typical trimmer diagram):

• EZ-Start™ Lever: For easy starting.
• Muffler Guard: Protects from hot muffler.
• Fuel Cap: Covers the fuel tank.
• Starter Rope Grip: Used to pull-start the engine.
• Muffler: Exhaust component.
• Blue EZ-Start Lever: Specific lever for the EZ-Start system.
• Spark Plug: Ignites fuel.
• On/Off Stop Control: Switch for turning the unit on/off.
• Shaft Grip: Main handle for holding the unit.
• Throttle Control: Controls engine speed.
• Shoulder Strap Clip: Attachment point for a shoulder strap.
• D-Handle: Auxiliary handle for improved grip and control.
• EZ-Link™: Connection point for various attachments.
• Engine Stand: Base of the engine.
• Primer Bulb: Primes the fuel system before starting.
• Shaft Housing: Encloses the drive shaft.
• Cutting Attachment Shield: Protects the operator from debris thrown by the cutting line.
• Cutting Attachment: The working end of the trimmer, holding the line.
• Line Cutting Blade: Located on the shield, cuts excess line to proper length.

Assembly Instructions

Installing and Adjusting the D-Handle

Install

1. Remove the screws and bottom clamp piece installed on the D-handle for shipping.
2. Place the D-handle over the shaft housing and onto the bottom clamp. Position it a minimum of 6 inches (15.24 cm) from the end of the shaft grip.
3. Start screws with a large Flat-head or T-25 Torx screwdriver. Do not tighten until the handle adjustment is made.

Adjust

1. If the D-handle was pre-installed, loosen the screws on the handle just enough to move it.
2. While holding the unit in the operating position, maneuver the D-handle to the location that provides the best grip.
3. Tighten the clamp screws evenly until the D-handle is secure.

Installing the Cutting Attachment Shield

Use the following instructions if the cutting attachment shield is not installed or needs re-installation.

Install on a Straight Shaft (TB75SS)

1. Slide the cutting attachment shield into the shield mount on the cutting attachment. Align the screw holes in the shield with the holes in the cutting attachment.
2. Place a hex lock nut into one of the three recessed holes on the top of the cutting attachment shield.
3. Install a screw into the hole from the bottom of the cutting attachment shield and screw it into the nut installed in step 2. Do not tighten.
4. Repeat steps 2 and 3 until all three screws have been started, then tighten securely.

Install on a Curved Shaft (TB25CS)

1. Place the cutting attachment shield onto the shaft housing above the clamp assembly.
2. Push the cutting attachment shield down to the top of the cutting attachment assembly, then rotate the cutting attachment shield until the screw holes align and the guard fits into the recessed pocket.
3. Install the screws with a Phillips screwdriver.

Oil and Fuel Information

Oil and Fuel Mixing Instructions

Old and/or improperly mixed fuel are common reasons for improper unit operation. Always use fresh, clean unleaded fuel. Follow these instructions carefully for the proper fuel/oil mixture.

Definition of Blended Fuels

Today's fuels often blend gasoline and oxygenates like ethanol, methanol, or MTBE (ether). Alcohol-blended fuel absorbs water, and even 1% water can cause fuel and oil to separate, forming acids when stored. When using alcohol-blended fuel, use fresh fuel (less than 60 days old).

Using Blended Fuels

If using blended fuel, follow these precautions:

• Always use the fresh fuel mix explained in your operator's manual.
• Always agitate the fuel mix before fueling the unit.
• Drain the tank and run the engine dry before storing the unit.

Using Fuel Additives

The 2-cycle oil included with your unit contains a fuel additive to inhibit corrosion and minimize gum deposits. Troy-Bilt recommends using their 2-cycle oil. If unavailable, use a good 2-cycle oil designed for air-cooled engines along with a fuel additive like STA-BIL® Gas Stabilizer or equivalent. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel according to container instructions. NEVER add fuel additives directly to the unit's fuel tank.

Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded gasoline in a separate fuel can. Use a 40:1 fuel/oil ratio. Do not mix them directly in the engine fuel tank. See the table below for specific gas and oil mixing ratios.

NOTE: One gallon (3.8 liters) of unleaded gasoline mixed with one 3.2 oz. (95 ml) bottle of 2-cycle oil makes a 40:1 fuel/oil ratio.

MIXING RATIO - 40:1

NOTE: Dispose of the old fuel/oil mix in accordance with Federal, State, and Local regulations.

Starting/Stopping Instructions

Starting Instructions

1. Mix gas with oil. Fill fuel tank with fuel/oil mixture. Refer to Oil and Fuel Mixing Instructions.

NOTE: There is no need to turn the unit on. The On/Off Stop Control is in the ON (1) position at all times.

2. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb and fuel lines. If fuel isn't visible, press and release the bulb until it is.
3. Push the blue EZ-Start™ lever towards the primer bulb until it clicks and locks into place.
4. Crouch in the starting position and do not squeeze the throttle control. Pull the starter rope out with a controlled and steady motion until the engine attempts to start. Repeat until the engine starts.

NOTE: The unit uses Spring Assist Starting™, which significantly reduces the effort required to start the engine. You must pull the starter rope out far enough to hear the engine attempt to start. There is no need to pull the rope briskly—there is no harsh resistance when pulling. This starting method is vastly different from (and much easier than) what you may be used to.

5. When the engine starts, squeeze the throttle control for 15 to 30 seconds to warm up the unit. The blue EZ-Start™ lever will click off automatically when you squeeze the throttle control.

• IF... The engine does not start, go back to step 2.
• IF... The engine stops while you are squeezing the throttle, go back to step 3.
• IF... The engine stops before you squeeze the throttle control, hold the throttle control and pull the starter rope until the trimmer starts.

NOTE: If you are having trouble starting the unit or are operating in extreme temperatures (below 40° F, above 90° F), refer to the Troubleshooting section.

Stopping Instructions

1. Release your hand from the throttle control. Allow the engine to cool down by idling.
2. Put the On/Off Stop Control in the OFF (O) position.

Operating Instructions

Operating the EZ-Link™ System

The EZ-Link™ system enables the use of these optional Add-Ons:

• Cultivator (TBGC)
• Edger (TBLE)
• Hedge Trimmer (TBAH)
• Straight Shaft Trimmer (TBSS)
• Turbo Blower (TBTB)
• Pole Saw (TBPS)
• Brushcutter (TBBC*)

*Do NOT use this attachment with an electric powered product.

Removing the Cutting Attachment or Add-Ons

1. Turn the knob counterclockwise to loosen.
2. Press and hold the release button.
3. While firmly holding the upper shaft housing, pull the cutting attachment or add-on straight out of the EZ-Link™ coupler.

Installing the Cutting Attachment or Add-Ons

NOTE: To make installing or removing the add-on easier, place the unit on the ground or on a work bench.

1. Turn knob counterclockwise to loosen.
2. While firmly holding the add-on, push it straight into the EZ-Link™ coupler.

NOTE: Aligning the release button with the guide recess will help installation.

3. Turn the knob clockwise to tighten.

For decorative trimming/edging with the line head cutting attachment, lock the release button of the cutting attachment into the 90° hole.

Holding the Trimmer

Before operating the unit, stand in the operating position. Check for the following:

• The operator is wearing eye protection and proper clothing.
• With a slightly-bent right arm, the operator's hand is holding the shaft grip.
• The operator's left arm is straight, the left hand holding the D-handle.
• The unit is at waist level.
• The cutting attachment is parallel to the ground and easily contacts the grass without the need to bend over.

NOTE: Do not rest the Bump Head™ on the ground while the unit is running.

Some line breakage will occur from:

• Entanglement with foreign matter.
• Normal line fatigue.
• Attempting to cut thick, stalky weeds.
• Forcing the line into objects such as walls or fence posts.

Tips for Best Trimming Results

• Keep the cutting attachment parallel to the ground.
• Do not force the cutting attachment. Allow the tip of the line to do the cutting, especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine.
• Cut grass over 8 inches (200 mm) by working from top to bottom in small increments to avoid premature line wear or engine drag.
• Cut from right to left whenever possible. Cutting to the left improves the unit's cutting efficiency. Clippings are thrown away from the operator.
• Slowly move the trimmer into and out of the cutting area at the desired height. Move either in a forward-backward or side-to-side motion. Cutting shorter lengths produces the best results.
• Trim only when grass and weeds are dry.

The life of your cutting line is dependent upon:

• Following the trimming techniques.
• What vegetation is being cut.
• Where vegetation is cut.

For example, the line will wear faster when trimming against a foundation wall as opposed to trimming around a tree.

Decorative Trimming

Decorative trimming is accomplished by removing all vegetation around trees, posts, fences, and more.

Rotate the whole unit so that the cutting attachment is at a 30° angle to the ground.

Maintenance and Repair Instructions

Maintenance Schedule

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures, take your unit to any non-road engine repair establishment, individual, or authorized service dealer.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual, or authorized service dealer.

To assure peak performance, engine exhaust port inspection may be necessary after 50 hours of operation. If lost RPM, poor performance, or general lack of acceleration is noticed, this service may be required. If your engine needs this inspection, refer service to any non-road engine repair establishment, individual, or authorized service dealer for repair. Do NOT attempt this process yourself as engine damage may result from contaminants involved in the cleaning process for the port.

Line Installation for the SpeedSpool®

Always use original equipment manufacturer 0.095 inch (2.41 mm) replacement line. Lines other than the specified may make the engine overheat or fail.

There are two methods to replace the SpeedSpool® trimming line:

• Wind the inner reel with new line.
• Install a pre-wound inner reel.

Winding the Inner Reel With New Line

NOTE: It is unnecessary to remove the bump knob to install a new trimming line.

1. Cut two pieces of 0.095 inch (2.41 mm) trimming line, 10 feet (3 m) long.
2. Hold the outer spool and turn the inner reel counterclockwise to line up the arrows on the outer spool and inner reel.
3. Pull old line out of the line loading and line locking holes.
4. Insert a piece of trimming line straight into one of the two eyelets in the outer spool. Push it up through the line loading hole in the inner reel. Do not bend the line when inserting it into the eyelet.
5. Insert the line into the locking hole. Do not push the line more than a 1/2 inch (12.7 mm) into the line locking hole. The line will form a small loop when inserted correctly.
6. Pull the line from the outer spool until the line is tight against the inner reel.
7. Repeat procedures 4-6 with the second piece of line.
8. Hold the outer spool. Wind the inner reel counterclockwise until approximately four (4) inches (102 mm) of line remain.

NOTE: Do not wind the inner reel before installing the second piece of line.

9. If winding the line becomes difficult or if the line jams, pull the ends of the line from the spool. Continue winding the inner reel counterclockwise.

Installing a Pre-Wound Reel

1. Turn the bump knob counterclockwise and remove the bump knob, spring, and foam seal.
2. Pull the old inner reel with existing line from the outer spool.
3. Insert the ends of the prewound inner reel line into the outer spool eyelets. Push the new inner reel, arrow side up, into the outer spool.
4. Hold the inner reel in place and install the bump knob, spring, and foam seal. Press down and turn the bump knob clockwise. Grasp the ends and pull firmly to release the line from the holding slots in the inner reel.

Releasing the Inner Reel

If the SpeedSpool® does not release line correctly, pull the ends of the line firmly from the spool. If this does not release the line, follow the Cleaning the SpeedSpool® instructions.

Cleaning the SpeedSpool®

Cleaning the SpeedSpool® may be necessary if:

• A jammed or excessive line must be removed.
• The SpeedSpool® becomes difficult to wind or does not operate correctly when bumping the head on the ground.

1. Hold the outer spool and unscrew the bump knob counterclockwise.
2. Pull out the bump knob, spring, and foam seal.
3. Pull the inner reel with existing line from the outer spool.
4. Remove any existing line from the inner reel before cleaning. Remove any debris or grass from the knob, spring, inner reel, and foam seal. Wash the inner reel with warm soapy water.
5. Clean the shaft and the inner surface of the outer spool. To clean the shaft underneath the plunger, press down on the plunger. Remove any dirt or debris from the shaft.

NOTE: The inner reel must be totally dry before reinstalling it into the outer spool. Do not lubricate the inner reel or outer spool assembly.

6. Place the inner reel into the outer spool.
7. Place the bump knob, spring, and foam seal onto the inner reel.
8. Press the bump knob down and tighten clockwise.
9. Install new line as described in Line Installation for the SpeedSpool®.

Air Filter Maintenance

Removing the Air Filter/Muffler Cover

1. Remove the four (4) screws securing the air filter/muffler cover. Use a flat blade or T20 Torx bit screwdriver.
2. Pull the cover from the engine. Do not force.

Cleaning the Air Filter

Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain your air filter properly can result in poor performance or can cause permanent damage to your engine.

1. Remove air filter/muffler cover.
2. Turn cover over and look inside to locate the air filter. Remove the air filter from inside the air filter/muffler cover.
3. Wash the filter in detergent and water. Rinse the filter thoroughly. Squeeze out excess water. Allow it to dry completely.
4. Apply enough clean SAE 30 oil to lightly coat the filter.
5. Squeeze the filter to spread and remove excess oil.
6. Replace the air filter inside the air filter/muffler cover.

NOTE: Operating the unit without the air filter and air filter/muffler cover assembly will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1. Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air filter/muffler cover and tighten. Do not over tighten.

Spark Arrestor Maintenance

NOTE: The exhaust can only flow in one direction: AWAY from the engine. Pay close attention when disassembling the muffler so you can put it back together correctly. Failure to do so will damage the unit and may cause serious personal injury.

1. Remove air filter/muffler cover.
2. Locate the muffler, but do not remove it. Find the two (2) screws on the bottom of the muffler. These two screws hold the Spark Arrestor Hood Assembly and the spark arrestor screen to the bottom of the muffler. Remove the two (2) screws using either a torx #20 or flat blade screwdriver.
3. Using a small flat blade screwdriver, carefully pry up the spark arrestor screen from the recessed hole, taking care to notice that the “raised” part of the spark arrestor screen is inside the recessed hole. Remove the spark arrestor screen from the muffler.
4. Clean the spark arrestor screen with a wire brush. Replace it if it is damaged, or if you are unable to clean it thoroughly.
5. Reinstall the spark arrestor screen by putting the “raised” portion of the screen inside the recessed hole of the muffler. Make sure that the spark arrestor screen fits flat against the muffler.
6. Place the spark arrestor plate on top of the spark arrestor with the “raised” side up and the opening facing towards the engine.
7. Place the spark arrestor hood on top of the spark arrestor plate with the “raised” side up and the opening facing AWAY from the engine. Verify that the exhaust will be directed AWAY from the engine.
8. Replace the two screws removed in Step 2 and tighten them securely.
9. Reinstall the air filter/muffler cover.

Carburetor Adjustment

The idle speed of the engine is adjustable through the air filter/muffler cover.

NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments.

Check Fuel Mixture

Old and/or improperly mixed fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh, properly-mixed fuel prior to making any adjustments. Refer to Oil and Fuel Information.

Clean Air Filter

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Adjust Idle Speed Screw

If, after checking the fuel mixture and cleaning the air filter, the engine still will not idle, adjust the idle speed screw as follows:

1. Start the engine and let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions.

2. Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips screwdriver into the hole in the air filter/muffler cover. Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.

NOTE: The cutting attachment should not rotate when the engine idles.

3. If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

Checking the fuel mixture, cleaning the air filter, and adjusting the idle speed should solve most engine problems.

If not and all of the following are true:

• The engine will not idle.
• The engine hesitates or stalls on acceleration.
• There is a loss of engine power.

Have the carburetor adjusted by an authorized service dealer.

Replacing the Spark Plug

Use a Champion RDJ7Y spark plug (or equivalent). The correct air gap is 0.020 inch (0.5 mm). Remove the plug after every 25 hours of operation and check its condition.

1. Stop the engine and allow it to cool. Grasp the plug wire firmly and pull it from the spark plug.
2. Clean around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.
3. Replace a cracked, fouled, or dirty spark plug. Set the air gap at 0.020 in. (0.5 mm) using a feeler gauge.

4. Install a correctly-gapped spark plug in the cylinder head. Tighten by turning the 5/8-inch socket clockwise until snug.

If using a torque wrench torque to: 110-120 in. lb. (12.3-13.5 N•m). Do not over tighten.

Cleaning

Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and solvents such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth.

Storage

• Never store the unit with fuel in the tank where fumes may reach an open flame or spark.
• Allow the engine to cool before storing.
• Store the unit locked up to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.

Long Term Storage

If the unit will be stored for an extended time, use the following storage procedure:

1. Drain all fuel from the fuel tank into a container with the same 2-cycle fuel mixture. Do not use fuel that has been stored for more than 60 days. Dispose of the old fuel/oil mix in accordance with Federal, State, and Local regulations.
2. Start the engine and allow it to run until it stalls. This ensures that all fuel has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 1 oz. (30 ml) of any high quality motor oil or 2-cycle oil into the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug.

NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage.

4. Thoroughly clean the unit and inspect it for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts, or bolts. The unit is ready for storage.

Transporting

• Allow the engine to cool before transporting.
• Drain fuel from unit.
• Tighten fuel cap before transporting.
• Secure the unit while transporting.

Troubleshooting

If further assistance is required, contact your authorized service dealer.

Specifications

Engine

• Engine Type: Air-Cooled, 2-Cycle
• Stroke: 1.25 in. (31.75 mm)
• Displacement: 1.9 cu in. (31 cc)
• Clutch Type: Centrifugal
• Idle Speed RPM: 2,800 - 4,000 rpm
• Operating RPM: 7,200+ rpm
• Ignition Type: Electronic
• Ignition Switch: Rocker Switch
• Spark Plug Gap: 0.020 in. (0.5 mm)
• Lubrication: Fuel/Oil Mixture
• Fuel/Oil Ratio: 40:1
• Carburetor: Diaphragm, All-Position
• Starter: Auto Rewind
• Muffler: Baffled with Guard
• Throttle: Manual Spring Return
• Fuel Tank Capacity: 13 oz. (384 ml)

Drive Shaft & Cutting Attachment

• Drive Shaft Housing: Steel Tube, EZ-Link™
• Throttle Control: Finger-Tip Trigger
• Approximate Unit Weight (No fuel, with cutting attachment, shield and D-handle): 13 lbs. (6 kg)
• Cutting Mechanism: SpeedSpool Dual String Cutting Head
• Line Spool: Bump Line Releaser
• Line Spool Diameter: 3 inches (76.2 mm)
• Trimming Line Diameter: 0.095 inches (2.41 mm)
• Cutting Path Diameter: 17 inches (43.18 cm)

*All specifications are based on the latest product information available at the time of printing. Troy-Bilt reserves the right to make changes at any time without notice.

Manufacturer's Limited Warranty

California / EPA Emission Control Warranty Statement

Your Warranty Rights and Obligations

The California Air Resources Board, the Environmental Protection Agency, and MTD LLC (MTD) explain the emission control system warranty on 2000 and later small off-road engines. New small off-road engines must be designed, built, and equipped to meet stringent anti-smog standards. MTD warrants the emission control system on your small off-road engine for the periods of time listed below, provided there has been no abuse, neglect, or improper maintenance.

Your emission control system may include parts such as the carburetor or fuel-injected system, the ignition system, and catalytic converter, along with hoses, belts, connectors, and other emission-related assemblies.

Where a warrantable condition exists, Troy-Bilt will repair your small off-road engine at no cost, including diagnosis, parts, and labor.

The 2000 and later small off-road engines are warranted for two years. If any emission-related part on your engine is defective, it will be repaired or replaced by Troy-Bilt.

Owners Warranty Responsibilities

• As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your operator's manual. Troy-Bilt recommends retaining all receipts covering maintenance, but cannot deny warranty solely for lack of receipts or failure to ensure performance of scheduled maintenance.
• Troy-Bilt may deny warranty coverage if your small off-road engine or part has failed due to abuse, neglect, improper maintenance, or unapproved modifications.
• You are responsible for presenting your small off-road engine to a Troy-Bilt Authorized Service Center as soon as a problem exists. Warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.

For questions regarding warranty rights and responsibilities, call 1-800-520-5520.

Manufacturer's Warranty Coverage

• The warranty period begins on the date the engine or equipment is delivered to the retail purchaser.
• The manufacturer warrants to the initial owner and each subsequent purchaser that the engine is free from defects in material and workmanship which cause the failure of a warranted part for a period of two years.
• Repair or replacement of warranted parts will be performed at no charge at an Authorized Troy-Bilt Service Center. For the nearest location, contact Troy-Bilt at 1-800-520-5520.
• Any warranted part not scheduled for replacement, or scheduled for regular inspection only (e.g., "Repair or Replace as Necessary"), is warranted for the warranty period. Any warranted part scheduled for replacement as required maintenance will be warranted for the period up to the first scheduled replacement point.
• The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective, if the diagnostic work is performed at an Authorized Troy-Bilt Service Center.
• The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still under warranty.
• Failures caused by abuse, neglect, or improper maintenance are not covered under warranty.
• The use of add-on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to cover failures of warranted parts caused by the use of add-on or modified parts.
• To file a claim, go to your nearest Authorized Troy-Bilt Service Center. Warranty services or repairs will be provided at all Authorized Troy-Bilt Service Centers.
• Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair of emission related parts and will be provided without charge to the owner. Any replacement part that is equivalent in performance or durability may be used in non-warranty maintenance or repair and will not reduce the warranty obligations of the manufacturer.
• The following components are included in the emission related warranty of the engine: air filter, carburetor, primer, fuel lines, fuel pick up/fuel filter, ignition module, spark plug, and muffler.

Manufacturer's Limited Warranty for: TROY-BILT®

The limited warranty set forth below is given by Troy-Bilt LLC with respect to new merchandise purchased and used in the United States, its possessions, and territories.

Troy-Bilt LLC warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase. Troy-Bilt LLC will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship. This limited warranty applies only if this product has been operated and maintained in accordance with the Operator's Manual, and has not been subject to misuse, abuse, commercial use, neglect, accident, improper maintenance, alteration, vandalism, theft, fire, water, or damage because of other peril or natural disaster. Damage resulting from the installation or use of any accessory or attachment not approved by Troy-Bilt LLC for use with the product(s) covered by this manual will void your warranty as to any resulting damage. This warranty is limited to ninety (90) days from the date of original retail purchase for any Troy-Bilt product used for rental or commercial purposes, or any other income-producing purpose.

How to Obtain Service

Warranty service is available, WITH PROOF OF PURCHASE THROUGH YOUR LOCAL AUTHORIZED SERVICE DEALER. To locate the dealer in your area, visit www.troybilt.com, check for a listing in the Yellow Pages, call 1-800-520-5520 or write to P.O. Box 361131, Cleveland, OH 44136-0019.

This limited warranty does not provide coverage in the following cases:

1. Tune-ups - Spark Plugs, Carburetor Adjustments, Filters
2. Wear items - Bump Knobs, Outer Spools, Cutting Line, Inner Reels, Starter Pulley, Starter Ropes, Drive Belts
3. Troy-Bilt LLC does not extend any warranty for products sold or exported outside of the United States of America, its possessions, and territories, except those sold through Troy-Bilt's authorized channels of export distribution.

Troy-Bilt LLC reserves the right to change or improve the design of any Troy-Bilt Product without assuming any obligation to modify any product previously manufactured.

No implied warranty, including any implied warranty of merchantability or fitness for a particular purpose, applies after the applicable period of express written warranty above as to the parts identified. No other express warranty or guaranty, whether written or oral, except as mentioned above, given by any person or entity, including a dealer or retailer, with respect to any product shall bind Troy-Bilt LLC. During the period of the Warranty, the exclusive remedy is repair or replacement of the product as set forth above. (Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.)

The provisions as set forth in this Warranty provide the sole and exclusive remedy arising from the sales. Troy-Bilt LLC shall not be liable for incidental or consequential loss or damages including, without limitation, expenses incurred for substitute or replacement lawn care services, for transportation or for related expenses, or for rental expenses to temporarily replace a warranted product. (Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.)

In no event shall recovery of any kind be greater than the amount of the purchase price of the product sold. Alteration of the safety features of the product shall void this Warranty. You assume the risk and liability for loss, damage, or injury to you and your property and/or to others and their property arising out of the use or misuse or inability to use the product.

This limited warranty shall not extend to anyone other than the original purchaser, original lessee, or the person for whom it was purchased as a gift.

How State Law Relates to this Warranty

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

To locate your nearest service dealer, dial 1-800-520-5520.