Operator’s Manual LT31, LT31C LT31CS 2-Cycle Petrol Trimmers Trimmer / Brushcutter IMPORTANT: Read safety rules and instructions carefully before operating equipment. PRINTED IN U.S.A. PART NO.
INTRODUCTION THANK YOU TABLE OF CONTENTS Thank you for buying this quality product. This modern outdoor power tool will provide many hours of useful service. You will find it to be a great labor-saving device. This operator’s manual provides you with easy-tounderstand operating instructions. Read the whole manual and follow all the instructions to keep your new outdoor power tool in top operating condition.
RULES FOR SAFE OPERATION 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 Indicates danger, warning or caution. Attention is required in order to avoid serious personal injury.
RULES FOR SAFE OPERATION • Always stop the engine and allow it to cool before filling the feul tank. Never remove the feul tank cap 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. • Add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Remove the fuel cap slowly, and only after the engine stops. Do not smoke while fueling or mixing fuel.
RULES FOR SAFE OPERATION • Do not attempt to touch or stop the blade when it is rotating. • A coasting blade can cause injury while it continues to spin after the engine is stopped or the throttle trigger is released. Maintain proper control until the blade has completely stopped rotating. • Do not run the unit at high speed when not cutting. After Use • Clean cutting blades with a household cleaner to remove any gum buildup. Oil the blade with machine oil to prevent rust.
RULES FOR SAFE OPERATION 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 and maintenance and repair information. SYMBOL MEANING SYMBOL MEANING • WEAR HEAD PROTECTION • SAFETY ALERT SYMBOL WARNING: Falling objects can cause severe head injury. Wear head protection when operating this unit. Indicates danger, warning, or caution.
KNOW YOUR UNIT Trimmer Model LT31 Take the time to identify the configuration of your unit, which is either a LT31, LT31C or LT31CS. Use this page, and the two that follow, to identify which unit is yours, then familiarize yourself with it. APPLICATIONS As a trimmer: • Cutting grass and light weeds • Edging • Decorative trimming around trees, fences, etc.
KNOW YOUR UNIT Trimmer Model APPLICATIONS As a trimmer: • Cutting grass and light weeds LT31C • Edging • Decorative trimming around trees, fences, etc.
KNOW YOUR UNIT Brushcutter Model LT31CS APPLICATIONS As a trimmer: • Cutting grass and light weeds • Edging • Decorative trimming around trees, fences, etc.
ASSEMBLY INSTRUCTIONS INSTALL AND ADJUST THE HANDLE Use the following information to install or adjust the handle onto your trimmer. Follow the instructions that apply to your type of handle. LT31: Small D-handle 1. Push the D-handle down onto the shaft housing so that the handle slants towards the shaft grip (Fig. 1). The squared bolt hole in the handle is to the right. 2. Insert the shoulder bolt into the squared hole in the handle and push through.
ASSEMBLY INSTRUCTIONS INSTALL CUTTING ATTACHMENT SHIELD LT31C Use the following instructions if the cutting attachment shield on your unit is not installed. Use only the instructions that apply to the type of shaft and shield that your unit is equipped with. 1. Place the cutting attachment shield onto the shaft housing above the clamp assembly (Fig. 8). To prevent serious personal injury, never operate the trimmer without the cutting attachment shield in place. WARNING: LT31 1.
BRUSHCUTTER ASSEMBLY INSTRUCTIONS LT31CS ONLY: INSTALL THE HARNESS Always use the shoulder harness when using the cutting blade to avoid serious personal injury. WARNING: 1. Push the strap through the center of the buckle. 2. Pull the strap over the cross bar and down through the slot in the buckle (Fig. 11). 3. Put the harness on over head and onto shoulder. Snap it on to the support fitting (Fig. 12). 4. Adjust length to fit the operator’s size. Pull tab to lengthen, pull strap to shorten (Fig 13).
BRUSHCUTTER ASSEMBLY INSTRUCTIONS Remove the Cutting Attachment Install the Cutting Blade 1. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole (Fig. 15). To avoid serious personal injury, always wear gloves while handling or installing the blade. WARNING: Output Shaft Shaft Bushing Hole 4. Place the cutting blade on the output shaft bushing (Fig. 18).
BRUSHCUTTER ASSEMBLY INSTRUCTIONS 6. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 15). 7. Put the blade retainer and nut on the output shaft. Make sure that the blade is installed correctly. 2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 21). 3. While holding the locking rod, loosen the nut on the blade by turning it clockwise with a 5/8 inch closedend or socket wrench (Fig. 21). 8.
OIL AND PETROL INFORMATION OIL AND PETROL MIXING INSTRUCTIONS Old and/or improperly mixed fuel are the main reasons for the unit not running properly. Be sure to use fresh, clean unleaded petrol. Follow the instructions carefully for the proper petrol/oil mixture. Definition of Blended Petrols Today's petrols are often a blend of petrol and oxygenates such as ethanol, methanol, or MTBE (ether). Alcohol-blended petrol absorbs water. As little as 1% water in the petrol can make petrol and oil separate.
STARTING/STOPPING INSTRUCTIONS Stop/Off (O) Operate this unit only in a well- ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area. WARNING: Avoid accidental starting. Make sure you are in the starting position when pulling the starter rope (Fig. 26). To avoid serious injury, the operator and unit must be in a stable position while starting. WARNING: Start/On (I) LT31 Fig. 23 Start/On (I) STARTING INSTRUCTIONS 1. Mix petrol with oil.
OPERATING INSTRUCTIONS HOLDING THE TRIMMER Always wear eye, hearing, foot and body protection to reduce the risk of injury when operating this unit. WARNING: not remove or alter CAUTION: Do the line cutting blade assembly. Excessive line length will make the clutch overheat. This may lead to serious personal injury or damage to the unit. Before operating the unit, stand in the operating position (Fig. 27).
OPERATING INSTRUCTIONS 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 (Fig. 29). The blade continues to spin after the engine is turned off. The coasting blade can seriously cut you if accidentally touched. WARNING: • Swing the unit in the opposite direction as the blade spins, which increases the cutting action.
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. To prevent serious injury, never perform maintenance or repairs with unit running.
MAINTENANCE AND REPAIR INSTRUCTIONS 3. Remove spring from the inner reel (Fig. 32). 4. Use a clean cloth to clean the the inner reel, spring, shaft, and inner surface of the outer spool. 5. Check the indexing teeth on the inner reel and outer spool for wear (Fig. 33). If necessary, remove burrs or replace the reel and spool. For Use with Single Line ONLY For Use with SplitLine™ or Single Line Slotted Holes Fig. 36 SplitLine™ Installation 8. Take approximately 3 m (10 feet) of new trimming line.
MAINTENANCE AND REPAIR INSTRUCTIONS NOTE: The spring must be assembled on the inner reel before reassembling the cutting attachment. 14. Hold the inner reel in place and install the bump knob by turning clockwise. Tighten securely. Spring LT31C LINE INSTALLATION: SPEEDSPOOL Never use metalreinforced line, wire, chain or rope. These can break off and become dangerous projectiles. WARNING: Always use original equipment manufacturer 2.03 mm (0.080 in) replacement line.
MAINTENANCE AND REPAIR INSTRUCTIONS 3. Pull old line out of the line loading and line locking holes (Fig. 41 and 42). 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 (Fig. 41). Do not bend the line when inserting it into the eyelet. 7. Repeat procedures 4-6 with the second piece of line. 8. Hold the outer spool.
MAINTENANCE AND REPAIR INSTRUCTIONS 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 (Fig. 47). Push the new inner reel, arrow side up, into 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 (Fig. 49). Inner Reel Fig. 49 Fig. 47 4.
MAINTENANCE AND REPAIR INSTRUCTIONS LT31CS LINE INSTALLATION: BUMP HEAD Indexing Teeth This section covers both SplitLine™ and standard single line installation. Always use original equipment manufacturer 2.41 mm (0.095 in) replacement line. Line other than the specified may make the engine overheat or fail. Never use metalreinforced line, wire, chain or rope. These can break off and become dangerous projectiles.
MAINTENANCE AND REPAIR INSTRUCTIONS 13. Insert the ends of the line through the eyelets in the outer spool and place inner reel with spring inside the outer spool (Fig. 59). Push the inner reel and outer spool together. While holding the inner reel and outer spool, grasp the ends and pull firmly to release the line from the holding slots in the reel. NOTE: The spring must be assembled on the inner reel before reassembling the cutting attachment. 14.
MAINTENANCE AND REPAIR INSTRUCTIONS AIR FILTER MAINTENANCE Removing the Air Filter/Muffler Cover To avoid serious personal injury, always turn your unit off and allow it to cool before you clean or service it. WARNING: 1. Place the choke lever in Position 2 (Fig. 60). NOTE: The choke lever must be in Position 2 to remove the air filter/ muffler cover. 2. Remove the four (4) screws securing the air filter/muffler cover (Fig. 60). Use a T-20 Torx bit screwdriver. 3. Pull the cover from the engine.
MAINTENANCE AND REPAIR INSTRUCTIONS SPARK ARRESTOR MAINTENANCE If the exhaust deflector assembly is not tightened securely, it could fall off causing damage to the unit and possible serious personal injury. WARNING: 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.
MAINTENANCE AND REPAIR INSTRUCTIONS 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.
MAINTENANCE AND REPAIR INSTRUCTIONS CLEANING To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or service it. WARNING: 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.
TROUBLESHOOTING ENGINE WILL NOT START CAUSE On/Off control in the OFF position Empty fuel tank Primer bulb wasn't pressed enough Engine is flooded Old or improperly mixed fuel Fouled spark plug Plugged spark arrestor The outside temperature is below 40º F The outside temperature is above 90º F ACTION Turn On/Off control to ON Fill fuel tank with properly mixed fuel Press primer bulb fully and slowly 10 times Squeeze the trigger and pull the starter rope Drain fuel tank and add fresh fuel mixture Replace or
SPECIFICATIONS ENGINE* Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.75 mm (1.25 in.) Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTES 32
