Related Manuals for MTD Yard Machines LT31S
Summary of Contents for MTD Yard Machines LT31S
- Page 1 Operator’s Manual LT31S 2-Cycle Petrol Trimmer IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY P/N 769-01661 (2/05)
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Page 2: Table Of Contents
We reserve the right to make changes at any time without notice. Copyright© 2005 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. -
Page 3: Rules For Safe Operation
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. - Page 4 RULES FOR SAFE OPERATION • 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. Wipe up any spilled fuel from the unit immediately.
- Page 5 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 •...
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Page 6: Know Your Unit
KNOW YOUR UNIT APPLICATIONS As a trimmer: • Cutting grass and light weeds • Edging • Decorative trimming around trees, fences, etc. On/Off Stop Control Shaft Tube Attachment Cutting Attachment KNOW YOUR UNIT Starter Rope Grip D-Handle Cutting Shield Fuel Cap... -
Page 7: Assembly Instructions
Phillips head screwdriver. Washer Shaft Housing Cutting Attachment Cutting Attachment To prevent serious WARNING: personal injury, never operate the trimmer without the cutting attachment shield in place. Shield Mount Fig. 3 Shaft Housing Recessed Holes Hex Lock Nut Fig. 4 (3) Screws Fig. -
Page 8: Oil And Petrol Information
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). -
Page 9: Starting/Stopping Instructions
STARTING/STOPPING INSTRUCTIONS WARNING: area. Carbon monoxide exhaust fumes can be lethal in a confined area. WARNING: starting position when pulling the starter rope (Fig. 8). To avoid serious injury, the operator and unit must be in a stable position while starting. STARTING INSTRUCTIONS 1. -
Page 10: Operating Instructions
• 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. -
Page 11: Maintenance And Repair Instructions
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. - Page 12 MAINTENANCE AND REPAIR INSTRUCTIONS For Use with Single For Use with SplitLine™ Line ONLY Slotted Holes Fig. 15 NOTE: SplitLine™ can only be used with the inner reel with the slotted holes. Single line can be used on either type of inner reel. Use Figure 15 to identify the inner reel you have.
- Page 13 MAINTENANCE AND REPAIR INSTRUCTIONS INSTALLING A PREWOUND REEL 1. Hold the outer spool with one hand and unscrew the bump knob counterclockwise (Fig. 12). Inspect the bolt inside the bump knob to make sure it moves freely. Replace the bump knob if damaged. 2.
- Page 14 MAINTENANCE AND REPAIR INSTRUCTIONS 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.
- Page 15 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.
- Page 16 To avoid serious WARNING: personal injury, always turn your trimmer off and allow it to cool before you clean or service it. Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that...
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Page 17: Troubleshooting Chart
ENGINE WILL NOT START C A U S E Empty fuel tank Primer bulb wasn't pressed enough Engine is flooded Old or improperly mixed fuel Fouled spark plug Plugged spark arrestor On/Off Control in OFF (O) position ENGINE WILL NOT IDLE C A U S E Air filter is plugged Old or improperly mixed fuel... -
Page 18: Specifications
ENGINE* Engine Type... Air-Cooled, 2-Cycle Stroke ... 31.75 mm (1.25 in.) Displacement... 31 cc (1.9 cu in.) Operating RPM ... 8,000 Idle Speed RPM ... 3,200 - 4,400 rpm Ignition Type... Electronic Ignition Switch ... Rocker Switch Spark Plug Gap ... 0.5 mm (0.020 in.) Lubrication ... - Page 19 NOTES...
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