MTD Yard Machines LT31 Operator'S Manual Download

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Operator’s Manual

IMPORTANT: Read safety rules and instructions carefully before operating equipment.

PRINTED IN U.S.A.

PART NO. 769-01389

(12/04)

LT31, LT31C

2-Cycle Petrol

Trimmers

LT31CS

Trimmer /

Brushcutter

Summary of Contents for Yard Machines LT31

Page 1: ...perator s Manual IMPORTANT Read safety rules and instructions carefully before operating equipment PRINTED IN U S A PART NO 769 01389 12 04 LT31 LT31C 2 Cycle Petrol Trimmers LT31CS Trimmer Brushcutte...

Page 2: ...AND SPECIFICATIONS 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...

Page 3: ...re petrol only in containers specifically designed and approved for the storage of such materials Avoid creating a source of ignition for spilled petrol Do not start the engine until petrol vapors dis...

Page 4: ...e position while starting Refer to Starting Stopping Instructions Use the right tool Only use this tool for its intended purpose Do not overreach Always keep proper footing and balance Always hold the...

Page 5: ...p the engine IMMEDIATELY if you feel excessive vibration Vibration is a sign of trouble Inspect thoroughly for loose nuts bolts or damage before continuing Repair or replace affected parts as necessar...

Page 6: ...bjects and rotating cutter can cause severe injury Keep bystanders especially children and pets at least 15 meters 50 ft away from the cutting area The cutting head guard must be used when using the t...

Page 7: ...Primer Bulb Blue Choke Lever Air Filter Muffler Cover Shaft Tube Starter Rope Grip Line Cutting Blade Muffler On Off Stop Control Cutting Attachment Trimmer Model LT31 Take the time to identify the c...

Page 8: ...tc Cutting Attachment Shield Fuel Cap Throttle Control D Handle Cutting Attachment Shaft Grip Primer Bulb Air Filter Muffler Cover Spark Plug On Off Stop Control Shaft Housing Starter Rope Grip Line C...

Page 9: ...inch in diameter Cutting Attachment Shield Fuel Cap Throttle Control J Handle Cutting Attachment Gear Housing Shaft Grip Primer Bulb Air Filter Muffler Cover Spark Plug On Off Stop Control Shaft Hous...

Page 10: ...aft 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 On the left side of the handle place the washer on th...

Page 11: ...the threaded end protrudes through the guard mounting bracket Fig 6 Guard Mounting Bracket Shaft Housing Square Bolt Cutting Attachment Shield 3 Put the washer on the bolt then screw the wing nut ont...

Page 12: ...in place at all times while operating the unit as a grass trimmer WARNING LT31CS ONLY INSTALL THE HARNESS 1 Push the strap through the center of the buckle 2 Pull the strap over the cross bar and dow...

Page 13: ...Fig 17 Fig 16 Install the Cutting Blade 4 Place the cutting blade on the output shaft bushing Fig 18 Shield Mount Locking Rod Cutting Blade Blade Retainer Nut Output Shaft Bushing Pilot Hole Fig 18 To...

Page 14: ...STRUCTIONS 4 Remove the nut blade retainer and blade Store the nut and blade together for future use in a secure place Store out of children s reach Install the Cutting Attachment 5 Align the shaft bu...

Page 15: ...r cooled engines along with a fuel additive such as STA BIL Petrol Stabilizer or an equivalent Add 23 ml 0 8 oz of fuel additive per gallon of fuel according to the instructions on the container NEVER...

Page 16: ...the blue choke lever in Position 2 7 While squeezing the throttle control hold the throttle lock out also for the LT31CS model pull the starter rope out with a controlled and steady motion 1 to 4 time...

Page 17: ...unit is running Fig 28 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...

Page 18: ...down and reinstalling it To reduce the chance of material wrapping around the blade follow these steps Cut at full throttle Swing the unit into material to be cut from your left to your right Fig 30...

Page 19: ...Check and clean spark arrestor Check spark plug condition and gap Page 27 Page 28 Every 50 hours Inspect exhaust port and spark arrestor screen for clogging or obstruction to assure maximum performanc...

Page 20: ...ner reel Place your index finger between the two lines to stop the lines from overlapping Do not overlap the ends of the line Proceed to step 11 SplitLine Installation 8 Take approximately 3 m 10 feet...

Page 21: ...the line from the holding slots in the spool 7 Hold the inner reel in place and install the bump knob by turning clockwise Tighten securely MAINTENANCE AND REPAIR INSTRUCTIONS Always use original equi...

Page 22: ...et Fig 41 Fig 42 6 Pull the line from the outer spool until the line is tight against the inner reel Fig 43 Fig 43 INSTALLING A PRE WOUND REEL 1 Turn the bump knob counterclockwise and remove the bump...

Page 23: ...eel with warm soapy water Fig 49 Fig 48 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...

Page 24: ...plitLine or Single Line For Use with Single Line ONLY Loop Indexing Teeth Fig 53 This section covers both SplitLine and standard single line installation Always use original equipment manufacturer 2 4...

Page 25: ...fore reassembling the cutting attachment 5 Insert the ends of the line through the eyelets in the outer spool Fig 59 6 Place the new inner reel inside the outer spool Push the inner reel and outer spo...

Page 26: ...muffler cover Fig 60 Use a T 20 Torx bit screwdriver 3 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 importan...

Page 27: ...e 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 arr...

Page 28: ...Checking the fuel mixture cleaning the air filter and adjusting the idle speed should solve most engine problems If not and the engine will not idle the engine hesitates or stalls on acceleration ther...

Page 29: ...red for more than 60 days Dispose of the old fuel oil mix in accordance to Federal State and Local regulations TRANSPORTING Allow the engine to cool before transporting Drain fuel from unit Tighten fu...

Page 30: ...y mixed fuel Drain fuel tank and add fresh fuel mixture Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor The outside temperature is below 40 F P...

Page 31: ...ng Cutting Head LT31C Cutting Mechanism Speed Spool Line Spool Bump Line Releaser Line Spool Diameter 76 2 mm 3 inches Trimming Line Diameter 2 03 mm 0 080 inches Cutting Path Diameter 38 1 cm 15 inch...

Page 32: ...32 NOTES...

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