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OPERATOR'S MANUAL
Front Tine Tiller
Model Number
21A-392B401
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.
770-10461A.fm
FORM NO.
(11/01)
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Summary of Contents for Yard-Man 21A-392B401
- Page 1 OPERATOR’S MANUAL Front Tine Tiller Model Number 21A-392B401 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).
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Page 2: Table Of Contents
Content Important Safe Operation Practices... 3 Assembling Your Tiller ... 5 Know Your Tiller... 6 Operating Your Tiller... 7 Making Adjustments ... 10 Maintaining Your Tiller ... 10 Troubleshooting ... 12 Parts List... 14 This Operator’s Manual is an important part of your new tiller. It will help you assemble, prepare and maintain the unit for best performance. -
Page 3: Important Safe Operation Practices
SECTION 1: IMPORTANT SAFE OPERATION 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 Start the engine according to the instructions found in this manual and keep feet well away from the tines at all times. After striking a foreign object, stop the engine, disconnect the spark plug wire and ground against the engine. Thoroughly inspect the machine for any damage.
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Page 5: Assembling Your Tiller
SECTION 2: ASSEMBLING YOUR TILLER This unit is shipped without gasoline or oil IMPORTANT: 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 tiller is observed from the operating position. -
Page 6: Know Your Tiller
Reverse Tine Z End Hooked Engagement Lever in Bracket Threaded Hex Nut Hex Nut Figure 3 • Thread the rod back into the cable until the cable is straight. Do not tighten it enough to put any tension on the spring. See Figure 3. •... -
Page 7: Operating Your Tiller
WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manual before operating. Forward Tine Engagement Handle The forward tine engagement handle is located beneath the tiller handle. Squeezing the handle up against the tiller handle engages the tines. Release the handle to stop the tines. - Page 8 • Disconnect spark plug wire from spark plug and ground against the engine. Using Your Tiller Your tiller is a precision built machine designed for seed bed preparation, cultivating, furrowing, and mulching. It is engineered to minimize the hardest work in the vegetable or flower garden, to till the soil for planning and cultivating, and to perform many other useful labor saving tasks in the garden.
- Page 9 which are turned up should be removed from the garden area. See Figure 10. Depth Stake Wheel Setting For Deep Tilling Figure 9 Figure 10 Handle Pressure Further control of tilling depth and travel speed can be obtained by variation of pressure on the handles. •...
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Page 10: Making Adjustments
SECTION 5: MAKING ADJUSTMENTS WARNING: Disconnect the spark plug wire and ground it against the engine before performing any adjustments. Engine Adjustment Refer to the separate engine manual for engine adjustment instructions. Wheel Adjustment To adjust the wheel yoke and wheel position, refer to the Operating Section. -
Page 11: Belt Replacement
Pivot Points Lubricate all pivot points and linkages at least once a season with light oil. Tine Shafts Remove tine assemblies and lubricate the tine shafts at least once a season. Wheel Shafts Remove wheel assemblies and lubricate the axle shafts at least once a season. -
Page 12: Troubleshooting
• Clean the exterior of engine and the entire tiller thoroughly. Lubricate the tiller as described in the lubrication instructions. • We do not recommend the use of pressure washers to clean your unit. They may cause damage to electric components, spindles, pulleys, bearings or the engine. - Page 13 Notes...
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Page 14: Parts List
Model 392... - Page 15 For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 Part Description L-Wash.
- Page 16 Model 392...
- Page 17 For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 Part Description Spacer .64”...
- Page 20 MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD LLC warrants this product against defects for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.