TB25SH - Lawn mower TROY-BILT - Free user manual and instructions

Product Type	Lawn Mower
Brand	Troy-Bilt
Model	TB25SH
Engine Displacement	25 cc
Engine Type	2-Stroke, Gasoline
Cutting Width	21 inches
Cutting Height Adjustment	6 positions, 1-3 inches
Start Type	Manual Recoil Start
Drive Type	Push (self-propelled not specified)
Fuel Tank Capacity	0.7 quarts
Oil Type	2-Cycle Oil Mix (50:1)
Weight	30 lbs
Deck Material	Steel
Grass Bag Capacity	1.5 bushels
Handle Type	Adjustable, Foldable
Safety Features	Blade Brake Clutch, Operator Presence Control
Maintenance	Regular cleaning, air filter and spark plug replacement
Spare Parts	Available via Troy-Bilt dealers online

Frequently Asked Questions - TB25SH TROY-BILT

What type of fuel does the Troy-Bilt TB25SH lawn mower require?

The TB25SH uses a 2-stroke gasoline engine. You must mix unleaded gasoline with 2-cycle oil at a 50:1 ratio. Do not use straight gasoline or oil.

How do I adjust the cutting height?

The mower has a six-position lever located on each wheel. To adjust, pull the lever outward and move it to the desired setting (1 is lowest, 6 is highest). Ensure all wheels are set to the same height.

What is the correct fuel mixture ratio?

The recommended fuel mixture is 50:1 (gasoline to 2-cycle oil). For example, mix 2.6 ounces of oil per gallon of gasoline. Use a high-quality 2-cycle oil designed for air-cooled engines.

How do I start the TB25SH lawn mower?

1. Fill the fuel tank with the correct mixture. 2. Press the primer bulb 3-5 times. 3. Set the throttle to the 'Choke' position if cold. 4. Pull the starter cord firmly until the engine starts. 5. Move the throttle to 'Run' and adjust as needed.

What maintenance is required after each use?

After each use, clean the mower deck and underside with a hose. Check the air filter and clean or replace if dirty. Inspect the spark plug and blade for damage. Store in a dry place.

Why won't my mower start?

Common causes: old or wrong fuel mixture (drain and replace), fouled spark plug (clean or replace), dirty air filter (clean or replace), or primer bulb issues. Check also that the spark plug wire is connected.

How do I clean the mower deck?

Tilt the mower so the spark plug faces up (to avoid oil leaks). Use a hose and scraper to remove grass clippings and dirt. Avoid spraying directly into the engine or air filter. Dry before storage.

Where can I find replacement parts for my TB25SH?

Replacement parts are available at Troy-Bilt authorized dealers, hardware stores, and online retailers. Common parts include air filters, spark plugs, blades, and fuel lines. Use the model number TB25SH to ensure compatibility.

How do I store the mower for winter?

1. Drain the fuel tank or add fuel stabilizer. 2. Run the engine until it stalls to empty the carburetor. 3. Change the spark plug. 4. Clean the mower thoroughly. 5. Store in a dry, covered area. Remove the battery if equipped.

What safety precautions should I take while using the mower?

Always wear eye and ear protection. Keep hands and feet away from the cutting deck. Never remove safety guards. Inspect the area for debris before mowing. Stop the engine before adjusting height or unclogging.

USER MANUAL TB25SH TROY-BILT

Technical line drawing of two mechanical lifters with connecting rods and mounting feet (no text or symbols)

SAVE THESE INSTRUCTIONS

IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions.

TABLE OF CONTENTS

Service	2
Safety	2
Know Your Unit	6
Specifications	7
Assembly	8
Oil and Fuel	10
Starting and Stopping	11
Operation	12
Maintenance	13
Cleaning and Storage	16
Troubleshooting	17
Warranty	18

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

The product may vary slightly from the illustrations contained in this manual.

Copyright© 2019 MTD SOUTHWEST INC, All Rights Reserved.

NOTE: This operator's manual covers multiple models. Features may vary by model. Not all features in this manual are applicable to all models. The model depicted may differ from yours.

SERVICE

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

For assistance regarding the assembly, operation or maintenance of the unit, please call 1-800-828-5500 (in the United States) or 1-800-668-1238 (in Canada). Additional information can be found at www.troybilt.com (in the United States) or www.troybilt.ca (in Canada).

Warranty service is available through an authorized service center. To locate a service center in your area, please visit our website or call the number listed above. Service on this unit, both within and after the warranty period, should only be performed by an authorized and approved service center. When servicing, use only identical replacement parts.

SAFETY

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.

SYMBOL MEANING

DANGER: Signals an EXTREME hazard.

Failure to obey a safety DANGER symbol WILL result in serious injury or death to yourself or to others.

WARNING: Signals a SERIOUS hazard.

Failure to obey a safety WARNING symbol CAN result in serious injury to yourself or to others.

CAUTION: Signals a MODERATE hazard.

Failure to obey a safety CAUTION symbol MAY result in property damage or injury to yourself or to others.

NOTE: Advises you of information or instructions vital to the operation or maintenance of the equipment.

SPARK ARRESTOR NOTE

NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington. All U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requires replacement, contact your local service dealer to install the appropriate muffler assembly.

WARNING: This product can expose you to chemicals including engine exhaust, which is known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Read the operator's manual and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

- IMPORTANT SAFETY INSTRUCTIONS •

READ ALL INSTRUCTIONS BEFORE OPERATING

WARNING: When using the unit, all safety instructions must be followed. Please read these instructions before operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these instructions for later use.

• Read the instructions carefully. Be familiar with the controls and proper use of the unit. Know how to stop the unit and disengage the controls quickly.
• Stay alert. Do not operate this unit when tired, ill or under the influence of alcohol, drugs or medication.
• Never allow children to operate the unit. Teens must be trained, accompanied and supervised by an adult. Never allow adults to operate the unit without proper instruction.
• All guards and safety attachments must be installed properly before operating the unit.
• Inspect the unit before use. Check for damaged parts. Check for fuel leaks. Make sure all parts operate properly. Make sure all fasteners are in place and secure. Make sure all moving parts are properly aligned and are not bound. Replace parts that are cracked, chipped, or damaged in any way. Have all damaged or improperly working parts repaired or replaced by an authorized service center. Do not operate the unit with loose or damaged parts.
• Only use the trimming line described in the Specifications section of this manual. Never use metal-reinforced line, wire, chain or rope. These can break off and become dangerous projectiles.
• Do not replace the cutting head with rigid or metal blades. Doing so could result in serious injury.
• Be aware of risk of injury to the head, hands and feet.
• Carefully inspect the area before starting the unit. Remove rocks, broken glass, nails, wire, string and other objects that may be thrown or become entangled with the unit.
• Clear the area of children, bystanders and pets; keep them outside a 50-foot (15 m) radius, at a minimum. Even then, they are still at risk from thrown objects. Encourage bystanders to wear eye protection. If you are approached, stop the unit immediately.
• Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs before using the unit.
• Do not change the engine governor settings or overspeed the engine.
• This unit is intended for occasional, household use only.

SAFETY WARNINGS FOR GAS UNITS

WARNING: Gasoline is highly flammable and its vapors can explode if ignited. Take the following precautions:

• Store fuel only in containers specifically designed and approved for the storage of such materials.
• Always stop the engine and allow it to cool before filling the tank. Never remove the fuel tank cap or add fuel when the engine is hot. Always loosen the fuel tank cap slowly to relieve any pressure in the tank before fueling.
• Always mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. DO NOT smoke.
• Never operate the unit without the fuel cap securely in place.
• Avoid creating a source of ignition for spilled fuel. Wipe up any spilled fuel from the unit immediately, before starting the unit. Move the unit at least 30 ft. (9.1 m) from the fueling source and site before starting the engine. DO NOT smoke.
• 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.

WHILE OPERATING

• Wear safety glasses or goggles that meet current ANSI / ISEA Z87.1 standards and are marked as such. Wear ear/hearing protection when operating this unit. Wear a face mask or dust mask if the operation is dusty.
• Wear heavy long pants, boots, gloves and a long sleeve shirt. Do not wear loose clothing, jewelry, short pants, sandals or go barefoot. Secure hair above shoulder level.
• The cutting head shield must always be in place while operating the unit.
• Do not operate the unit without both trimming lines extended and the proper line installed. Do not extend the trimming line beyond the length of the shield.
• The cutting head should remain stationary when the engine idles. If it does not, refer to Adjusting the Idle Speed.
• Adjust the handle to provide the best grip, if applicable.
• Make sure the cutting head 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. Refer to Starting and Stopping.
• Use the right tool. Only use this tool for its intended purpose. Only use the unit as described in this manual.
• Always hold the unit with both hands when operating. Keep a firm grip on both handles or grips.
• Do not overreach. Always keep proper footing and balance. Take extra care when working on stairs, steep slopes or inclines. To avoid serious injury, do not operate the unit while on a ladder or a roof.
• Keep hands, face, and feet away from all moving parts. Do not touch or try to stop moving parts.

• Do not touch the engine, gear housing or muffler. These parts get extremely hot from operation, even after the unit is turned off.

• Do not operate the unit faster than the speed needed to do the job. Do not run the unit at high speed when not in use.

• Do not force the unit. It will do a better, safer job when used at the intended rate.
• Always turn the unit off when operation is delayed or when carrying the unit from one location to another. Make sure all moving parts come to a complete stop.
• Before setting the unit down, always make sure the engine is off and all moving parts have stopped.
• If the unit strikes or becomes entangled with a foreign object, stop the unit immediately. Check for damage. If damaged, do not restart or operate the unit until it is repaired. Do not operate the unit with loose or damaged parts.
• Turn the engine off and disconnect the spark plug for maintenance or repair.
• Use only original equipment manufacturer (OEM) replacement parts and accessories for this unit. These are available from your authorized service dealer. Use of any other parts or accessories could lead to serious injury to the user, or damage to the unit, and void the warranty.
• Keep the unit clean. Carefully remove vegetation and other debris that could block moving parts.
• To reduce fire hazard, replace a faulty muffler and spark arrestor. Keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.
• If the unit starts to vibrate abnormally, stop the unit immediately. Inspect the unit for the cause of the vibration. Vibration is generally an indicator of trouble.

OTHER SAFETY WARNINGS

• Maintain the unit with care. Follow all maintenance instructions in this manual.
• Do not perform maintenance procedures other than those described in this manual. All service, other than the maintenance procedures described in this manual, should be performed by an authorized service dealer.
• Never remove, modify or make inoperative any safety device furnished with the unit.
• Before inspecting, maintaining, cleaning, storing, transporting or replacing any parts on the unit:
• Stop the unit. Refer to Starting and Stopping.
• Make sure all moving parts have stopped.
• Allow the unit to cool.
• Disconnect the spark plug wire.
• Secure the unit while transporting.
• Never store the unit with fuel in the tank, inside a building where fumes may reach an open flame (pilot lights, etc.) or sparks (switches, electrical motors, etc.).
• Store the unit in a dry place, secured or at a height to prevent unauthorized use or damage. Keep the unit out of the reach of children.
• Never douse or squirt the unit with water or any other liquid. Keep handles dry and clean (free from debris, oil and grease). Clean the unit after each use. Refer to Cleaning and Storage. Do not use solvents or strong detergents.
• Keep these instructions. Refer to them often and use them to instruct other users. If you loan this unit to others, also loan them these instructions.

SAVE THESE INSTRUCTIONS

• SAFETY & 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 and maintenance and repair information.

SYMBOL MEANING SYMBOL MEANING

	• SAFETY ALERT SYMBOLIndicates danger, warning or caution. May be used in conjunction with other symbols or pictographs.
	• READ OPERATOR'S MANUALWARNING: Read the operator's manual(s) and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.
	• WEAR EYE AND HEARING PROTECTIONWARNING: Thrown objects and loud noise can cause severe eye injury and hearing loss. Wear eye protection meeting current ANSI / ISEA Z87.1 standards and ear protection when operating this unit. Use a full face shield when needed.
	• WEAR FOOT PROTECTIONAlways wear heavy-duty, non-slip footwear when operating this unit.
	• WEAR HAND PROTECTIONAlways wear heavy-duty, non-slip gloves when handling this unit.
	• HANDLE POSITIONMake sure the handle is positioned beyond the end of the safety label.
	• UNLEADED FUELAlways use clean, fresh unleaded fuel.
	• OILRefer to operator's manual for the proper type of oil.
	• DO NOT USE E85 FUEL IN THIS UNITCAUTION: It has been proven that fuel containing greater than 10% ethanol will likely damage this engine and void the warranty.

	ON/OFF STOP CONTROLON / START / RUN
	ON/OFF STOP CONTROLOFF or STOP
	PRIMER BULBPush primer bulb, fully and slowly, 10 times.
	THROWN OBJECTS CAN CAUSE SEVERE INJURYWARNING: Small objects can be propelled at high speed, causing injury.
Min. 50 ft15 m	KEEP BYSTANDERS AWAYWARNING: Keep all bystanders, especially children and pets, at least 50 feet (15 m) from the operating area.
	HOT SURFACEWARNING: Do not touch a hot muffler or cylinder. You may get burned. These parts get extremely hot from operation. When turned off, they remain hot for a short time.
	SHARP BLADEWARNING: There is a sharp blade on the cutting head shield. To prevent serious injury, do not touch the line cutting blade.
	DO NOT REPLACE CUTTING HEADS WITH BLADES*WARNING: When using a trimmer, to prevent serious injury, do not replace the cutting head with rigid or metal blades.*This warning does not apply to units equipped with blades, such as edgers and brush cutters.

KNOW YOUR UNIT

TB25CH

APPLICATIONS

As a trimmer:

• Cutting grass and light weeds
- Edging
• Decorative trimming around trees, fences, etc.
Other optional attachments may be used with this unit.

ASSEMBLY TOOLS REQUIRED

- Flat-head screwdriver

TB25SH

APPLICATIONS

As a trimmer:

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

Other optional attachments may be used with this unit.

ASSEMBLY TOOLS REQUIRED

- Flat-head screwdriver

SPECIFICATIONS\*

Engine Type ...... Air-Cooled, 2-Cycle

Displacement. 25 cc (1.52 cu. in.)

Spark Plug Gap....0.025 in. (0.635 mm)

Spark Plug. .... Champion® RDJ7J or equivalent plug

Lubrication Fuel/Oil Mixture

Fuel/Oil Ratio 40:1

Fuel Tank Capacity 8.5 fl. oz. (251 ml)

Approximate Unit Weight (No fuel) (TB25CH). 11 - 12 lbs. (5.0 - 5.4 kg)

Approximate Unit Weight (No fuel) (TB25SH) 12 - 13 lbs. (5.4 - 5.9 kg)

Trimmer Mechanism ...... Fixed-line Cutting Head

Trimming Line. 0.095 in. (2.41 mm) Pre-Cut Line

Cutting Path Diameter....14 in. (35.6 cm)

* All specifications are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice.

ASSEMBLY

INSTALLING THE CUTTING HEAD SHIELD

TB25CH

WARNING: To prevent serious personal injury, never operate the unit without the cutting head shield in place.

1. Remove the wing nut and washer from the cutting head shield.
2. Insert the short tab (the one without a hole) on the mount bracket into the slot on the cutting head shield (Fig. 1).
3. Rotate the cutting head shield counterclockwise to align the hole on the cutting head shield with the hole on the mount bracket (Fig. 1).
4. Insert the square bolt into the hole underneath the cutting head shield (Fig. 2). Push the square bolt through the cutting head shield and mount bracket.
5. Place the washer onto the square bolt (Fig. 2).
6. Screw the wing nut onto the square bolt until the cutting head shield is firmly in place (Fig. 2).

Fig. 1

Fig. 2

INSTALLING THE CUTTING HEAD SHIELD

TB25SH

WARNING: To prevent serious personal injury, never operate the unit without the cutting head shield in place.

1. Remove the wing nut and washer from the cutting head shield.
2. Insert the short tab (the one without a hole) on the mount bracket into the slot on the cutting head shield (Fig. 3).
3. Rotate the cutting head shield until the bolt on the cutting head shield protrudes through the hole on the mount bracket (Fig. 3).
4. Place the washer onto the bolt (Fig. 4).
5. Screw the wing nut onto the bolt until the cutting head shield is firmly in place (Fig. 4).

Fig. 4

INSTALLING AND REMOVING THE ATTACHMENT

The coupler enables the use of various optional attachments.

WARNING: Before using any attachment, read and understand the manual that came with the attachment. Follow all safety information contained within.

WARNING: To avoid serious personal injury and damage to the unit, shut the unit off before removing or installing an attachment.

Installing the Attachment

1. Remove the hanger cap from the attachment. Keep the hanger cap for use when storing the attachment. If present, remove the gray spacer from the coupler.
2. Set the unit on a flat, level surface.
3. Turn the knob counterclockwise to loosen the coupler (Fig. 5).
4. Align the release button with the guide recess (Fig. 7).
5. Push the attachment straight into the coupler (Fig. 6) until the release button snaps firmly into the primary hole (Fig. 7).
6. Turn the knob clockwise to tighten the coupler (Fig. 5).

WARNING: Before operating the unit, make sure the release button is fully snapped into the primary hole and the knob is securely tightened.

WARNING: Unless specified otherwise, the release button should be snapped into the primary hole only. Using the wrong hole could lead to personal injury or damage to the unit.

Removing the Attachment

1. Set the unit on a flat, level surface.
2. Turn the knob counterclockwise to loosen the coupler (Fig. 5).
3. Press and hold the release button (Fig. 7).
4. Pull the attachment straight out of the coupler (Fig. 6).

INSTALLING AND ADJUSTING THE HANDLE

Installing the Handle

1. Push the handle down onto the upper shaft housing (Fig. 8). Make sure the bolt hole faces to the right (Fig. 8).
2. Insert the bolt into the bolt hole and push it through (Fig. 8). Tighten the bolt with a flat-head screwdriver, but do not tighten the bolt completely.
3. Hold the unit in the operating position (Fig. 12). Move the handle up or down the upper shaft housing to a comfortable location (Fig. 8). Make sure the handle is positioned beyond the end of the safety label (Fig. 8).
4. Tighten the bolt with a flat-head screwdriver until the handle is secure.

Adjusting the Handle

If the handle requires adjustment:

1. Loosen the bolt with a flat-head screwdriver (Fig. 8).
2. Hold the unit in the operating position (Fig. 12). Move the handle up or down the upper shaft housing to a comfortable location (Fig. 8). Make sure the handle is positioned beyond the end of the safety label (Fig. 8).
3. Tighten the bolt with a flat-head screwdriver until the handle is secure.

OIL AND FUEL

OIL AND FUEL MIXING INSTRUCTIONS

The use of old and/or improperly mixed fuel is the most common cause of performance problems. Use only fresh, clean unleaded gasoline. Follow the instructions carefully for the proper gasoline/oil mixture.

Definition of Blended Fuels

Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol or MTBE (ether). Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate, forming acids when stored. ALWAYS use fresh fuel (less than 30 days old).

NOTE: Dispose of old fuel according to federal, state and local regulations.

Using Blended Fuels

If using a blended fuel:

• Always use the fresh fuel mix explained in this operator's manual
- Use the fuel additive STA-BIL® or an equivalent
• Always agitate the fuel mix before fueling the unit

CAUTION: DO NOT USE E85 FUEL IN THIS UNIT. It has been proven that fuel containing greater than 10% ethanol will likely damage this engine and void the warranty.

Using Fuel Additives

The container of 2-cycle oil provided with this unit includes a fuel additive to help inhibit corrosion and minimize gum deposits. Always use the brand of 2-cycle oil that came with this unit. If this is unavailable, use a 2-cycle oil designed for air-cooled engines and mix it with a fuel additive, such as STA-BIL Fuel Stabilizer or an equivalent. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel, according to the instructions on the container. NEVER add fuel additives directly to the unit's fuel tank.

Mixing the Fuel

NOTE: This unit comes with a 3.2 oz. (95 ml) container of 2-cycle oil. To obtain the correct fuel mixture described below, pour the entire container into one gallon of unleaded gasoline.

CAUTION: For proper engine operation and maximum reliability, pay strict attention to the gasoline and oil mixing instructions on the 2-cycle oil container. Using improperly mixed fuel can severely damage the engine.

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

	
Unleaded gasoline 2-cycle oil
1 gallon U.S. (3.8 liters)	3.2 fl. oz. (95 ml)
1 liter 25 ml

MIXING RATIO - 40:1

FUELING THE UNIT

WARNING: Gasoline is extremely flammable. Ignited vapors may explode. Always stop the engine and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames at a distance from the area.

WARNING: Remove the fuel cap slowly to avoid injury from fuel spray. Never operate the unit without the fuel cap securely in place.

WARNING: Add fuel in a clean, well-ventilated outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

1. Position the unit with the fuel cap facing up.
2. Slowly remove the fuel cap.
3. Place the fuel container spout into the fuel tank fill hole and fill the tank.
   NOTE: Do not overfill the tank.
4. Wipe up any fuel that may have spilled.
5. Reinstall the fuel cap.
6. Move the unit at least 30 ft. (9.1 m) from the fuel container and the fueling site before starting the engine.

STARTING AND STOPPING

WARNING: Operate this unit only in a well-ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.

WARNING: Avoid accidentally starting the unit. To avoid serious injury, the operator and the unit must be in a stable position when pulling the starter rope (Fig. 11).

STARTING INSTRUCTIONS

NOTE: To prevent the throttle control from being squeezed accidentally, this unit has a throttle lockout. The throttle control cannot be squeezed unless the throttle lockout is also engaged.

NOTE: There is no need to turn the unit on. The On/Off switch is in the On (1) position at all times (Fig. 9).

Before Starting the Unit

1. Mix gasoline with oil. Refer to Oil and Fuel Mixing Instructions.
2. Fill the fuel tank. Refer to Fueling the Unit.

Starting the Unit

NOTE: DO NOT squeeze the throttle control (Fig. 9) until step 6.

1. Slowly press and release the primer bulb 10 times (Fig. 10).
2. Flip the choke lever clockwise until it clicks (Fig. 10).
3. Crouch in the starting position (Fig. 11).
4. Pull the starter rope with a controlled and steady motion until the unit starts (Fig. 11).
5. Idle the engine for 30 seconds.
6. Press and hold the throttle lockout (Fig. 9). Squeeze the throttle control as needed for operation (Fig. 9).

IF... the engine does not start after pulling the starter rope 10 times, repeat the starting procedure.

IF... the engine is already warm: Press and hold the throttle lockout. Squeeze and hold the throttle control. Pull the starter rope with a controlled and steady motion until the unit starts.

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to idle.
2. Press and hold the On/Off switch in the Off (O) position until the engine comes to a complete stop (Fig. 9).

Fig. 9

Fig. 10

Fig. 11

OPERATION

HOLDING THE UNIT

WARNING: Always wear eye, hearing, hand, foot and body protection to reduce the risk of injury when operating this unit.

WARNING: To prevent serious personal injury, avoid arm contact with the engine while operating the unit. The engine may be extremely hot.

• Stand in the operating position (Fig. 12). Stand up straight. Do not bend over.
• Keep feet apart and firmly planted.
• Hold the shaft grip with the right hand. Keep the right arm slightly bent.
• Hold the handle with the left hand. Keep the left arm straight.
• Hold the unit at waist level.
• Position the cutting head a few inches above the ground.

Line drawing of a person using a lawn power tool on grass (no text or symbols)

Fig. 12

TIPS FOR BEST RESULTS

• For most operations, cut from side to side.
• To direct clippings away from the operator, tilt the cutting head slightly down to the left; cut from right to left whenever possible.
• Cut tall grass (over 8 inches (20cm)) from the top down by lowering the cutting head onto the grass.
• Cut with the tip of the trimming line.
• Cut in small increments. Move slowly. Do not force the unit.
• Do not trim wet grass or weeds.

NOTE: Some line breakage will occur from:

• Entanglement with foreign matter
- Normal line fatigue
- Attempting to cut thick vegetation
- Forcing the line into objects such as walls or fence posts

DECORATIVE TRIMMING

When trimming around trees, posts, fences, etc., rotate the whole unit so that the cutting head is at a 30^ angle to the ground (Fig. 13).

Fig. 13

EDGING

The trimmer attachment can be used for edging (Fig. 14). Alternatively, a bladed lawn edger attachment can also be purchased for use with this unit.

Rotating the Trimmer Attachment

WARNING: To avoid serious personal injury and damage to the unit, shut the unit off before rotating the attachment.

When edging around sidewalks, flowerbeds, etc., rotate the trimmer attachment 90° inside the coupler. DO NOT rotate the entire unit 90°.

1. Turn the knob counterclockwise to loosen the coupler (Fig. 15).
2. Press and hold the release button (Fig. 15).
3. Rotate the attachment until the release button snaps firmly into the 90° edging hole (Fig. 15).
4. Turn the knob clockwise to tighten the coupler (Fig. 15).

WARNING: Only snap the release button into the 90° edging hole when edging with the trimmer attachment. Using the 90° edging hole with other attachments could lead to personal injury or damage to the unit.

Maintaining the Trimming Line

Hard surfaces, such as sidewalks, can cause the trimming line to wear down quickly or break.

• Frequently check the trimming line length. Replace the trimming line as needed. Refer to Replacing the Trimming Line.
• DO NOT force the unit. Make shallow cuts in as many passes as are necessary to achieve the desired depth. Cut at a slow, even pace.

Line drawing of a person using a lawn power presser (no text or symbols present)

Fig. 14

Fig. 15

MAINTENANCE

WARNING: To avoid serious personal injury, always stop the engine and allow it to cool before cleaning or maintaining the unit. Never perform cleaning or maintenance while the unit is running. Disconnect the spark plug wire to prevent the unit from starting accidentally.

WARNING: Wear protective clothing and observe all safety instructions to prevent serious personal injury.

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 the unit to an MTD authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by an MTD authorized service dealer.
NOTE: Please read the California/EPA statement that came with the unit for a complete listing of terms and coverage for the emissions control devices, such as the spark arrestor, muffler, carburetor, etc.

Every 10 hours •	Clean and re-oil the air filter. Refer to Maintaining the Air Filter.
Every 25 hours •	Check the spark plug condition and gap.Refer to Maintaining the Spark Plug.

REPLACING THE TRIMMING LINE

Only use the trimming line described in the Specifications section. Other types of trimming line may cause the unit to overheat or fail.

WARNING: Never use metal-reinforced line, wire, chain or rope. These can break off and become dangerous projectiles.

1. Remove the old line from the cutting head. Push one end of the trimming line into the cutting head until a loop of line protrudes from the head. Pull the loop to remove the line.
2. Use a clean cloth to clean the surface of the cutting head.
3. Insert the ends of the new trimming line into the holes in the cutting head (Fig. 16). Push the line through the holes until both ends protrude from the positioning tunnels (Fig. 17).
4. Pull the ends of the line until the line is tight against the cutting head. Make sure the ends of the line are of equal length (Fig. 18). If one end is longer than the other, push the longer end back through the cutting head partway and pull the shorter end out. If necessary, repeat this process until both ends are of equal length.
5. Press the exposed loop of trimming line until it is tight against the cutting head (Fig. 18).

MAINTAINING THE AIR FILTER

Failure to maintain the air filter can result in poor performance or can cause permanent damage to the engine. Engine failure due to improper air filter maintenance is not covered by the product warranty.

Cleaning the Air Filter

1. Open the air filter cover: Hook your fingers behind the cover tab. To unlock the air filter cover, pull it to the left and away from the engine. This may require a firm pull. Swing the air filter cover to the right (Fig. 19).
2. Remove the air filter from inside the air filter cover (Fig. 19).
3. Wash the air filter in detergent and water. Rinse the air filter thoroughly and allow it to dry.
4. Lightly coat the air filter with clean SAE 30 oil.
5. Squeeze the air filter to spread and remove excess oil.
6. Reinstall the air filter inside the air filter cover (Fig. 19).
   NOTE: Operating the unit without the air filter and air filter cover will VOID the warranty.
7. Close the air filter cover: swing the air filter cover to the left and press it closed until the lock tab snaps into place (Fig. 19).

ADJUSTING THE IDLE SPEED

WARNING: The cutting head may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

If the engine will not idle properly:

1. Start the engine. Refer to Starting and Stopping.
2. Release the throttle control and let the engine idle.

NOTE: Make sure the choke lever is NOT engaged while adjusting the idle speed.

• If the engine stops, increase the idle speed. Use a small Phillips screwdriver to turn the idle speed screw clockwise, 1/8 of a turn at a time, until the engine idles smoothly (Fig. 20).
• If the cutting head spins when the engine idles, reduce the idle speed. Turn the idle speed screw counterclockwise, 1/8 of a turn at a time, until the cutting head stops moving (Fig. 20).

Fig. 20

MAINTAINING THE SPARK PLUG

1. Stop the engine and allow it to cool. Grasp the spark plug boot firmly and pull it from the spark plug.
2. Clean around the spark plug. Remove the spark plug from the cylinder head with a 5/8-inch socket, turning counterclockwise.

WARNING: Do not sand blast, scrape or clean spark plug electrodes. Grit in the engine could damage the cylinder.

1. Inspect the spark plug. If the spark plug is cracked, fouled or dirty, replace it with replacement part #753-06847, a Champion RDJ7J or an equivalent spark plug.
2. Use a feeler gauge to set the air gap at 0.025 in. (0.635 mm) (Fig. 21).
3. Install the spark plug in the cylinder head. Tighten the spark plug with a 5/8-inch socket, turning it clockwise until snug.

NOTE: If using a torque wrench, torque to:

110-120 in. • lb. (12.3-13.5 N•m). Do not over tighten.

1. Reattach the spark plug boot.

Fig. 21

CLEANING AND STORAGE

CLEANING

WARNING: To avoid serious personal injury, always stop the engine and allow it to cool before cleaning or maintaining the unit.

Use a small brush to clean 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. Wipe off any moisture with a soft cloth.

STORAGE

• Never store a fueled unit where fumes may reach an open flame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
• To suspend the attachment from a hook, install the hanger cap onto the attachment. Make sure the release button is securely locked into one of the holes on the hanger cap.

Short-term Storage (1-2 weeks)

1. Store the unit in a horizontal position. If this is not possible, store the unit vertically with the engine at the top.

Long-term Storage

1. Remove the fuel cap, tip the unit and drain the fuel into an approved container. Reinstall the fuel cap.
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 5 drops 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.
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.

Preparing the Unit for Use after Long-term Storage

1. Remove the spark plug. Tip the unit and drain all of the oil from the cylinder into an approved container. Reinstall the spark plug.

NOTE: Do not use fuel that has been stored for more than 30 days. Dispose of old fuel and oil according to federal, state and local regulations.

TROUBLESHOOTING

PROBLEM SOLUTION
THE ENGINE WILL NOT START
The fuel tank is empty Fill the fuel tank with properly-mixed fuel
The primer bulb was not pressed enough Press the primer bulb 10 times
The engine is flooded	Press the throttle lockout, squeeze the throttle control and pull the starter rope until the engine starts
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel	tank and add fresh, properly-mixed fuel
The spark plug is fouled Replace the spark plug
The choke lever was not flipped	Refer to Starting Instructions in the Starting and Stopping section
THE ENGINE WILL NOT IDLE
The air filter is dirty Clean or replace the air filter
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel	tank and add fresh, properly-mixed fuel
The idle speed is incorrect Adjust the idle speed
THE ENGINE WILL NOT ACCELERATE
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel	tank and add fresh, properly-mixed fuel
The cutting head is bound with grass Stop the engine and clean the	cutting head
The air filter is dirty Clean or replace the air filter
THE ENGINE LACKS POWER OR STALLS
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel	tank and add fresh, properly-mixed fuel
The air filter is dirty Clean or replace the air filter
The spark plug is fouled Replace the spark plug

If further assistance is required, contact an authorized service center.

MANUFACTURER'S LIMITED WARRANTY FOR:

TROY-BILT®

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

Troy-Bilt warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship. This limited warranty shall only apply if this product has been operated and maintained in accordance with the Operator's Manual furnished with the product, 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 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 that is 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 our website at www.troybilt.com or www.troybilt.ca, check for a listing in the Yellow Pages, call 1-800-828-5500 or 1-800-668-1238 in Canada, or write to P.O. Box 361131, Cleveland, OH 44136-0019. No product returned directly to the factory will be accepted unless prior written permission has been extended by the Customer Service Department of Troy-Bilt.

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

A. Tune-ups - Spark Plugs, Carburetor Adjustments, Filters

B. Wear items - Bump Knobs, Outer Spools, Cutting Line, Inner Reels, Starter Pulley, Starter Ropes, Drive Belts, Saw Chains, Guide Bars, Cultivator Tines, Blades.

C. Troy-Bilt 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 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 as 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. 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 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 1-800-828-5500 in the United States or 1-800-668-1238 in Canada.

TROY-BILT LLC

P.O. Box 361131

Cleveland, OH 44136-0019

TROY-BILT®

Manual del Operador

TB25CH / TB25SH

Technical line drawing of two mechanical lifters with connecting rods and mounting feet (no text or symbols)

CONSERVE ESTAS INSTRUCCIONES

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Fig. 12

Line drawing of a person using a lawn power tool (no text or symbols)

Fig. 14