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MTD 979K Operator's Manual

21" self-propelled mower
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Operator's Manual
21" Self-Propelled
Mower
Model 979K
IMPORTANT:
Read safety rules and instructions
carefully
before operating
equipment.
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved
forest-
covered, brush-covered
or grass-covered
land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained
in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department,
P.O. Box 361131 Cleveland, Ohio 44136-0019.
MTD LLC, P.O. BOX361131CLEVELAND, O HIO44136-0019
PRINTED IN U.S.A.
Form No.769-01614
(3/2005)

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  • Page 1 Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019. MTD LLC, P.O. BOX361131CLEVELAND, O HIO44136-0019 PRINTED IN U.S.A. Form No.769-01614...

  • Page 2: Findingmodel Number

    TABLEOFCONTENTS Content Page Content Page Maintaining Your Lawn Mower Important Safe Operation Practices Slope Gauge Servicing Your Mower Assembling Your Lawn Mower Off Season Storage Know Your Lawn Mower Troubleshooting Illustrated Parts List Operating Your Lawn Mower Warranty Making Adjustments FINDINGMODEL NUMBER This Operator's Manual is an important part of your new lawn mower.

  • Page 3: Section 1: Important Safeoperation P Ractices

    SECTION 1: IMPORTANT SAFEOPERATION P RACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury.

  • Page 4: Slope Operation

    Children 16. Mowindaylight o r good artificial l ight; w alk, n otrun. 17. Stop thebladewhen crossing gravel d rives, Tragic accidents can occur if the operator is not alert to walkways o rroads. the presence of children. Children are often attracted to 18.

  • Page 5: Your Responsibility

    11. Replace gasoline c apandtighten securely. Mower blades are sharp and can cut. Wrap the 12. If gasoline isspilled, w ipeitofftheengine and blade or wear gloves, and use extra caution when equipment. Moveunit t oanother a rea. W ait5 servicing them. minutes b efore starting theengine.
  • Page 6 SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE i,II A POWER POLE A CORNER OFA BUILDING >, OR A FENCE POST >, >, 15 ° WARNING Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet).

  • Page 7: Section 3: Assembling Your Lawnmower

    SECTION 3: ASSEMBLING YOUR LAWNMOWER Removing UnitFromCarton Make certain the lower handle is seated securely into the handle bracket assemblies. • Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open Handle Assembly carton.

  • Page 8: Attaching Thegrassbag

    Fasten the cable to the lower handle with the two • cable ties found on the lower handle. Pull the cable ties tight and trim off the excess. See Figure 4. Cable Tie Lower Handle Nuts Figure 4 Figure 6 Attaching S tarterRope •...

  • Page 9: Section 4: Know Your Lawnmower

    SECTION 4: KNOW YOUR LAWNMOWER Read this operator's manual and safety rules before The recoil starter is attached to the right upper handle. operating your lawn mower. Compare the illustration in Stand behind the unit and pull the recoil starter rope to start the unit.

  • Page 10: Section 5: Operating Y Our Lawnmower

    SECTION 5: OPERATING Y OUR LAWNMOWER WARNING: Be sure no one other than the ARNING" operator is standing near the lawn mower while Read, understand, and follow all instructions and warnings on the machine and starting engine or operating mower. in this manual before operating.

  • Page 11: Section 6: Making Adjustments

    • For a healthy lawn, always cut off one-third or less Bagging GrassClippings of the total length of the grass. Lawn should be You can use the grass catcher bag to collect clippings trimmed in fall as long as there is growth. while you are operating the mower.

  • Page 12: Engine Adjustments

    ShiftLever Cable • Start engine and place shift lever in the sixth speed position. Refer to Figure 11. Periodic adjustment of the six speed shift cable may be • Stop engine and disconnect spark plug wire and necessary due to normal wear on the cable. Adjustment ground it against engine.
  • Page 13 Lubrication Refer to the lubrication chart in Figure 13. BladeControlHandle • Lubricate the pivot points on the blade control Lubricate handle at least once a season with light oil. The blade control must operate freely in both directions. Rear DischargeDoor Lubricate •...

  • Page 14: Drive Belt Replacement

    • Slide the blade adapter onto the engine crankshaft. Remove the hex bolt from the rear of unit holding • Place the blade on the adapter. Be certain the the transmission to the mower housing. blade is aligned and seated on the blade adapter See Figure 16.
  • Page 15 Pivot the control arm back to its original position and reinstall the six-speed cable into the slot. See Figure 21. \\\\ Six-Speed Six-Speed Control Belt Cable Slot Cable Slot Figure 18 • Using pliers, rotate the belt keeper bracket so that it snaps into slot on the idler bracket.

  • Page 16: Section 9: Off-Season S Torage

    SECTION 9: OFF-SEASON S TORAGE StoringYourLawnMower • Coat mower's cutting blade with chassis grease to prevent rusting. The following steps should be taken to prepare your • Store mower in a dry, clean area. Do not store next lawn mower for storage. to corrosive materials, such as fertilizer.

  • Page 17: Section 10: Troubleshooting

    SECTION 10: TROUBLESHOOTING Problem Cause Remedy Engine fails to start Blade control handle disengaged. Engage blade control handle. Spark plug wire disconnected. Connect wire to spark plug. Fuel tank empty or stale fuel. Fill tank with clean, fresh gasoline. Blocked fuel line. Clean fuel line.

  • Page 18: Your Notes

    YOURNOTES Date Comments...
  • Page 19 Safety& Decorative L abels 777S30116 (MODEL PLATE ON RIGHT SIDE) 777S30118 777120291 777120067 777D00535 777S30128 777S30145 777D06796 NNNNNI I DANQmR I...
  • Page 20 SECTION 11: PARTS LISTFORMODEL 979K IMPORTANT: proper working machine, use Factory Approved Parts. V-BELTS are specially designed to engage disengage safely. A substitute (non OEM) V-Belt be dangerous disengaging completely.
  • Page 21 Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted MTD Red, the part number to order would be 700-xxxx-0638. MTD Red: 0638; Powder Black: 0637...
  • Page 22 Model979K...
  • Page 23 For instance, if a part numbered 700- xxxx is painted MTD Red, the part number to order would be 700-xxxx-0638. MTD Red: 0638; Powder Black: 0637...
  • Page 24 MANUFACTURER'S LIMITED WARRANTY FOR: ® The limited warranty set forth below is given by MTD LLC with MTD LLC does not extend any warranty for products respect to new merchandise purchased and used in the sold or exported outside of the United States, its United States, its possessions and territories.

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