Yard-Man 978Q Operator's Manual
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Yard-Man 978Q Operator's Manual

Yard-Man 978Q Operator's Manual

21" self-propelled mower
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Operator's Manual
21" Self-Propelled
Mower
Model 978Q
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,OHIO44136-0019
PRINTED IN U.S.A.
Form No.769-00596B
(11/2003)

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Summary of Contents for Yard-Man 978Q

  • Page 1 Operator's Manual 21" Self-Propelled Mower Model 978Q 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).

  • Page 2: Table Of Contents

    This information will be necessary to use the manufacturer's web site and/or help from the Customer Support Department or an authorized service dealer. Copy the model number here: Copy the serial number here: YaRD-MaN)/2 =:° .Lc P. O. BOX 361131 CLEVELAND,OH 44136 www.yardman.com 330-220-4683 800-800-7310 CUSTOMER SUPPORT Please do NOTreturn theunit to the retailer from where it waspurchased,withoutfirst contactingCustomer Support.

  • Page 3: Important Safe Operation Practices

    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 immediately andtheblade willstoprotating within Do not mow on wet grass. Unstable footing could threeseconds. cause slipping. 9. Mowindaylight o rgoodartificial light; w alk,notrun. Children 10.Stoptheblade whencrossing gravel d rives, walkways o rroads. Tragic accidents can occur if the operator is not alert to 11.Iftheequipment should start t ovibrate abnormally, the presence of children.
  • Page 5 10.Never o verfill f ueltank.Filltanktonomorethan½ Mower blades are sharp and can cut. Wrap the inchbelowbottom offillernecktoprovide space for blade or wear gloves, and use extra caution when fuelexpansion. servicing them. 11.Replace gasoline c apandtighten securely. Keep all nuts, bolts, and screws tight to be sure the 12.If gasoline isspilled, w ipeitofftheengine and equipment is in safe working condition.

  • Page 6: Slope Gauge

    SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE i,,II A POWER POLE A CORNER OF A 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). A riding mower could overturn and cause serious injury.

  • Page 7: Assembling Your Lawn Mower

    SECTION 3: ASSEMBLING YOUR LAWNMOWER Removing UnitFromCarton Setting UpYourLawn Mower • Remove staples, break glue on top flaps, or cut AssemblingHandle tape at carton end and peel along top flap to open • Lift up and pull back on the upper handle to raise carton.
  • Page 8 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 5. Cable Tie Lower Handle Nuts Figure 5 Figure 7 Attaching S tarterRope •...

  • Page 9: Know Your Lawn Mower

    SECTION 4: KNOW YOUR LAWNMOWER RecoilStarter Read this operator's manual and safety rules before operating your lawn mower. Compare the illustration in The recoil starter is attached to the support rod located Figure 10 with your lawn mower to familiarize yourself on the right side of the lower handle.

  • Page 10: Operating Your Lawn Mower

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

  • Page 11: Making Adjustments

    Stopping Engine Mulching • Release blade control handle to stop the engine For effective mulching, do not cut wet grass. New or and the blade. thick grass may require a narrower cut. If the grass has • Disconnect spark plug wire and move away from grown in excess of 4", mulching is not recommended.
  • Page 12 HandleHeight To resolve the above problems, rotate the adjustment wheel with your fingers clockwise to Your mower is shipped with the handle in the higher tighten the cable and counter-clockwise to loosen height position. To lower the height, proceed as follows: the cable.

  • Page 13: Maintaining Your Lawn Mower

    SECTION 7: MAINTAINING YOUR LAWNMOWER Inspect muffler periodically, and replace if necessary. Damaged mufflers or spark arresters can create a fire hazard. Make sure to avoid muffler WARNING" Always stop the engine and disconnect the spark plug wire before performing any maintenance work or and surrounding areas while the mower engine is adjustments on your lawn mower.

  • Page 14: Servicing Your Lawn Mower

    SECTION 8: SERVICING YOUR LAWNMOWER • Be sure to install the blade with the side of the WARNING: Always stop the engine and blade marked "Bottom" (or with part number) facing disconnect the spark plug wire before the ground when the mower is in the operating performing any maintenance work or position.
  • Page 15 • Remove the three hex screws holding the baffle to Squeeze the belt together and push it forward, the deck and pivot baffle towards the rear of the while pressing the control arm inward towards the mower. See Figure 18. deck and remove the six speed cable from the slot.

  • Page 16: Off-Season Storage

    Pinch both sides of the belt together so that the belt • Make sure the belt is routed inside the pulley halves is not in the pulley groove, and the lower pulley can and the belt guard pin. be pushed towards the engine. See Figure 23. Reinstall the bolt securing transmission to rear mower housing.

  • Page 17: 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: Illustrated Parts List

    SECTION 11: PARTS LISTFORMODEL 978Q IMPORTANT: proper working machine, use Factory Approved Parts. V-BELTS are specially designed to engage 95-----_ and disengage safely. A substitute (non OEM) V-Belt be dangerous disengaging completely.
  • Page 19 Model978Q Ref. Part No. Ref. Part No. Description Description 747-0824 Control Lever 748-0381 Pawt RH Deluxe Control Lever 748-0188B Pawt LH 647-0004_ 731-0904A 738-0137A Shld Screw.340 ID x.285 OD Upper Control Housing 16864 748-0318 Wheel Rachet 6 Speed Rack Cable Bracket 731-0620 Drive Control Lever 736-0270...
  • Page 20 Model978Q...
  • Page 21 Model978Q Ref, Ref. Part No. Part Description Part No. Part Description 720-0223 712-0896 Hex Jam Nut 1/4-28 Grip 732-0803A 782-7598 Spring Lever Belt Keeper 738-0529 741-0124 Shoulder Nut.825 x.165 Lg. Bearing 710-0751 732-0849A Cap Screw 1/4-20 x.620 Extension Spring 736-0270 Belt Washer.285 ID x.75 OD 750-1050 Flange Spacer...
  • Page 22 Safety& Decorative L abels 777S30116 (MODEL PLATE ON RIGHT SIDE) 777120291 777120067 777S30128 TF/DO 777S30145...
  • Page 23 NOTES...

  • Page 24: Warranty

    MANUFACTURER'S LIMITED WARRANTY FOR: YaRD.MaN ® The limited warranty set forth below is given by MTD LLC with MTD does not extend any warranty for products sold or respect to new merchandise purchased and used in the exported outside of the United States, its possessions United States, its possessions and territories.

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