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Yard Machines LT31 manual

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Table of contents for the manual

  • Page 1

    Operator’ s Manual L T31 2-Cycle Petr ol T rimmer IMPORT ANT : Read safety rules and instructions carefully befor e operating equipment. PRINTED IN U.S.A. PA RT NO. 769-00828 (9/03)[...]

  • Page 2

    2 T ABLE OF CONTENTS Content P age Important Safe Operation Practices ............................................................... 3 Know Y our T rimmer ........................................................................................ 6 Assembling Y our T rimmer .............................................................................[...]

  • Page 3

    3 This Symbol Points Out Important Safety Information Which, If Not Followed, Could Endanger The Personal Safety And/or Property Of Y ourself And Others. Read And Follow All Instructions In This Manual Befor e Attempting T o Operate Y our Cultivator . FailureT o Comply With These Instructions May Result In Personal Injury . When Y ou See This Symbo[...]

  • Page 4

    WHILE OPERA TING • 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 area outdoors. •W ear safety glasses or goggles and ear/hearing protection when operating this unit. W ear a face or dust mask if the operation is dusty . •W ear heavy , long pants, boo[...]

  • Page 5

    5 SYMBOL MEANING • THROWN OBJECTS CAN CAUSE SEVERE INJURY W ARNING: Keep clear of blower outlet. Never point the blower at yourself or others. Objects can be thrown fr om blower . Do not operate unit without proper attachments and guards in place. • ON/OFF STOP CONTROL ON / ST ART / RUN • ON/OFF STOP CONTROL OFF or STOP •H OT SURF ACE W ARN[...]

  • Page 6

    6 SECTION 2: KNOW Y OUR TRIMMER Cutting Head Guard Fuel Cap Throttle Control D-handle Cutting Head Shaft Grip Primer Bulb Choke Lever Air Filter/Muffler Cover Spark Plug Shaft T ube Starter Rope Grip Line Cutting Blade Muffler Ignition Switch APPLICA TIONS As a trimmer: • Cutting grass and light weeds • Edging • Decorative trimming around tr [...]

  • Page 7

    SECTION 3: ASSEMBLING Y OUR TRIMMER 7 INST ALLING THE CUTTING HEAD GUARD W ARNING: To avoid serious personal injury , never operate the trimmer without the cutting head guard in place. 1. Place the cutting head guar d onto the shaft tube above the clamp assembly , Figure 3. 2. Push the cutting guar d down to the top of the cutting head assembly and[...]

  • Page 8

    SECTION 4: OPERA TING Y OUR TRIMMER 8 W ARNING: Petr ol 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 ar ea. W ARNING: Remove fuel cap slowly to avoid injury from fuel spray . Never [...]

  • Page 9

    FIGURE 7 ST ARTING INSTRUCTIONS W ARNING: Operate this unit only in a well ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area . W ARNING: A void accidental starting. Make sure you ar e in the starting position when pulling the starter rope, Figur e 7. To avoid serious injury , the operator and unit must be in a [...]

  • Page 10

    For best results, tap the Bump Head™ on bar e ground or hard soil. If line r elease is attempted in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes mor e difficult as the cutting line becomes shorter . NOTE: Do not rest the Bump Head™ on the ground while the unit is running. CAUTION: Do not r[...]

  • Page 11

    11 SECTION 5: MAINT AINING Y OUR TRIMMER FIGURE 11 Spring Bump Knob LINE INST ALLA TION This section covers both Split-Line™ and standard single line installation. Always use original equipment 2.03 mm (0.080 inch) r eplacement line. Line other than specified may make the engine overheat or fail. W ARNING: Never use metal-reinfor ced line, wire o[...]

  • Page 12

    12 FIGURE 20 FIGURE 16 FIGURE 17 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 . Holding Slots Single Line Installation 6. T ake appr oximately 7.6 m (25 feet) of new trimming line and loop it into two[...]

  • Page 13

    AIR FIL TER MAINTENANCE Removing the Air Filter/Muffler Cover W ARNING: To avoid serious personal injury , always turn the unit off and allow it to cool before you clean or perform any maintenance on it. 1. Place the choke lever in Position 2 , Figur e 21. NOTE: The choke lever must be in Position 2 to re move the air filter/muffler cover , Figure [...]

  • Page 14

    CAUTION: Do not sand blast, scrape, or clean electrodes. Grit in the engine could damage the cylinder . 4. Install a corr ectly gapped spark plug in the cylinder head. Tighten by turning the 5/8 in. socket clockwise until snug. If using a torque wr ench torque to: 12.3-13.5 N•m (110-120 in.•lb.) Do not over tighten. FIGURE 27 REPLACING THE SP A[...]

  • Page 15

    15 NOTE: If exhaust gasket is torn or damaged, replace with a new gasket before reassembling muffler . 4. Using a small flatblade screwdriver , carefully pry up the spark arrestor fr om the recessed hole, Figur e 29. Remove the spark arrestor fr om the muffler . 5. Clean the spark arrestor with a wir e brush. Replace if it is damaged or unable to t[...]

  • Page 16

    CLEANING THE UNIT W ARNING: To avoid serious personal injury , always tur n the unit off and allow it to cool before you clean or perform any maintenance on it. • Use a small brush to clean off the outside of the unit and to keep the air vents free of obstructions. • Do not use strong deter gents or petroleum based cleaners, such as kerosene. S[...]

  • Page 17

    ENGINE WILL NOT ST ART CAUSE A CTION Empty fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fill fuel tank with pr operly mixed fuel Primer bulb wasn't pr essed enough . . . . . . . . . . . . . . . .Press primer bulb fully and slowly 10 times Engine flooded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 18

    ENGINE* Engine T ype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air -Cooled, 2-Cycle Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.75 mm (1.2[...]

  • Page 19

    SECTION 9: NOTES 19[...]

  • Page 20

    OPERA TOR’S MANUAL P ART NO. 769-00828 7/03 PRINTED IN THE USA SECTION 9: NOTES Cont...[...]