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OPERATOR'S MANUAI
21" Self-Propelled
Mower
Model 247.379790
Factory No. 12A-979L402
IMPORTANT:
READ SAFETY RULES AND INSTRUCTIONS
CAREFULLY
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. BOX 361131 CLEVELAND,
OHIO 44136-0019
PRINTED IN U.S.A.
FORM NO. 769-00049
(2/02)
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Related Manuals for Yard-Man 247.379790
Summary of Contents for Yard-Man 247.379790
- Page 1 ® OPERATOR'S MANUAI 21" Self-Propelled Mower Model 247.379790 Factory No. 12A-979L402 IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY 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...
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Page 2: Finding Modelnumber
TABLEOFCONTENTS Content Page Important Safe Operation Practices ..............Slope Gauge ...................... Assembling Your Lawn Mower ................Know Your Lawn Mower ..................Operating Your Lawn Mower ................Making Adjustments ..................Maintaining Your Lawn Mower ................Troubleshooting ....................Parts List ......................FINDING MODELNUMBER This Operator's Manual is an important part of your new lawn mower. -
Page 3: Section1' Importantsafeoperation Practices
SECTION1' IMPORTANTSAFEOPERATION PRACTICES 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
unclogging thechute. The cutting blade c ontinues to obscure your vision of a child who may run into the rotate f orafew seconds after t he engine i sshut off.Never mower. place any part o fthebody intheblade area until y ou are Keep children away from hot or running engines. - Page 5 3. Check t heblade and engine m ounting bolts atfrequent 9. Grass c atcher components, discharge cover, and trail intervals forproper tightness. Also, v isually inspect blade shield aresubject towear a nd damage which c ould fordamage (e.g., b ent, cracked, worn) R eplace blade expose m oving p arts orallow objects tobethrown.
- Page 6 SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE i"11 >, >, >, 15 ° < "E t,,/3 ,_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 O30.
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Page 7: Section3' Assemblingyourlawn Mower
SECTION3' ASSEMBLINGYOURLAWN MOWER IMPORTANT: This unit is shipped without gasoline or oil Assembly in the engine. Be certain to service engine with gasoline and oil as instructed in the separate engine manual before operating your mower. NOTE: Reference to right or left hand side of the mower is observed from the operating position. -
Page 8: Section 4: Knowyour Lawnmower
NOTE: Make certain the drive cable is routed around the outside and above the lower handle so it does not Lower interfere with attaching the grass bag. The rope guide, which is connected to the support Rope rod, is located on the right side of lower handle. See Figure 5. -
Page 9: Section 5: Operating Your Lawnmower
SECTION 5: OPERATING YOUR LAWNMOWER TowardsBetter Mower Performance Pour fresh, clean gasoline into the mower's gas Hold control handle down and pull rope firmly to tank until the tank is full. Do not use gasoline start the engine. that is more than 30 days old. Set cutting height adjustment lever to middle Make sure to connect the mower's spark plug setting and mow a single pass on your lawn;... -
Page 10: Attaching The Grassbag
theengine. S uchobjects could beaccidently thrown by • Replace with grass bag adapter, while making themower i nanydirection andcause serious personal sure the front lip of adapter goes under the edge of injury totheoperator a ndothers. the deck. Secure with wing nuts previously removed. -
Page 11: Section6: Makingadjustments
SECTION6: MAKINGADJUSTMENTS • Place the hairpin clips in the inner holes in the weld adjustments without first stopping engine pins and insert the carriage bolts the upper hole on WARNING: Do not at any time make any and disconnecting spark plug wire. the handle mounting bracket and secure with plastic wing nuts. -
Page 12: Engine Adjustments
required due to normal wear on the cable. Adjustment • Loosen hex nut which secures the adjustable cable is needed if all six speeds do not work. bracket. See Figure 14. • Push back on the adjustable cable bracket and The adjustable cable bracket is located on the left side tighten hex nut. -
Page 13: Maintenance
Periodically check all fasteners and make sure usually indicate that the air cleaner should be serviced. To service the air cleaner, refer to the these are tight. Follow the maintenance schedule under Customer separate engine manual packed with your unit. Responsibilities to get quality performance from The spark plug should be cleaned and the gap... - Page 14 speeds. It may cause damage to the mower, and could Remove the hex bolt from the rear of unit holding break causing personal injury. the transmission to the mower housing. See Figure 18. The blade can be tested by balancing it on a round shaft screwdriver.
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Page 15: Storing Your Lawn Mower
Pinch both sides of the belt together so that the belt Six-Speed is not in the pulley groove, and the lower pulley can Belt Cable Slot be pushed towards the engine. See Figure 22. Control Lower Pulley © Belt Lower Pulley Half Figure 22 •... -
Page 16: Section 8: Troubleshooting
• Refer to engine manual for correct engine storage NOTE: When storing any type of power equipment in a instructions. poorly ventilated or metal storage shed, care should be • Coat mower's cutting blade with chassis grease to taken to rust-proof the equipment. Using a light oil or prevent rusting. - Page 17 Notes...
- Page 18 Model979 36 37 44_2 "1...
- Page 19 Model979 Ref. Ref. Part No. Part Description Part No. Part Description 647-0004 Control Handle 748-0381 Pawl RH 731-0904A 748-0188B Pawl LH Upper Control Handle 16864 738-0137A Shld Screw .340 ID x .285 OD 6 Spd. Rack Cable Bracket 731-0620 Control Lever 748-0318 Wheel Rachet 713-0397...
- Page 20 Model979...
- Page 21 Model 979 Ref. Ref. Part No. Part No. Part Description Part Description 720-0223 712-0896 Hex Jam Nut 1/4-28 Grip 732-0803A 782-7598 Belt Keeper Spring Lever 738-0529 741-0600 Bearing Shoulder Nut .825 x .165 Lg. 710-0751 732-0849A Cap Screw 1/4-20 x .620 Extension Spring 736-0270 Bell Washer .285 ID x .75 OD...
- Page 24 MANUFACTURER'S LIMITED WARRANTY FOR: YaRD-MaN , The limited warranty set forth below is given by MTD LLC MTD LLC does not extend any warranty for products with respect to new merchandise purchased and used in the sold or exported outside of the United States, its posses- United States, its possessions and territories.