Manual

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Operator's Manual

Rear Tine

Tiller

21A-450 Series

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 attester 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 depadment, P.O. Box 368022 Cleveland, Ohio 44136-9722.

MTD PRODUCTS INC P.O. BOX 368022 CLEVELAND, OHIO 44136.9722

PRINTED IN U.S.A. FORM NO. 770-10137D

(10i20oo)

Summary of content (20 pages)

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Operator's Manual Rear Tine Tiller 21A-450 Series IMPORTANT: Read safety rules and instructions carefully before operating Warning: This unit is equipped with an internal combustion engine and should not be used on or covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with applicable local or state laws (if any).
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TABLEOFCONTENTS Content Page Important Safe Operation Practices ................................................................... 3 Loose Parts & Hardware Pack ........................................................................... 5 Assembling Your Tiller ....................................................................................... 6 Know Your Tiller ................................................................................................. 8 Operating Your Tiller ..........
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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 al! instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol - heed its warning.
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. Keep bystanders, helpers, pets, and children at least 75 feet from the machine while it is in operation. Stop the machine if anyone enters the area. 5. Be careful when tilling in hard ground. The tines may catch in the ground and propel the tiller forward. If this occurs, let go of the handlebars and de not restrain the machine. 6. Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic. Do not carry passengers. 7.
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SECTION2: LOOSEPARTS Handle Assembly Depth Stake Assembly Control Rod / / /// i¸ / i : i: S; / • / / / II i I / /' / : / / )i n NOTE: Cable tie not shown.
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SECTION3: ASSEMBLING YOURTILLER IMPORTANT:This unit is shipped WITHOUT GASOLINE or OIL. After assembly, see separate engine manual for proper fuel and engine oil recommendations. AttachingDepthStakeAssembly NOTE: Left and right is determined from operator's position, standing behind the tiller.
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NOTE: Do not overtighten clutch cable. Too much tension may cause it to break. Slot Head Screw, Nut, Flat Washers Internally Threaded Tube / / cable adjustment instructed on the this clutch page WARNING: Be as certain to check before operating the tiller. Secure clutch cable to handle using cable tie. Refer to Figure 6. Cut off excess end of cable tie. AttachingTheControlRod • • • Figure 3 AttachingTheClutchCable • Attach the clutch cable to the handle as fellows (be careful not to kink the cable).
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TirePressure Now move the shift lever to FORWARD (Wheels Forward) position. Carefully engage the clutch by lifting the clutch control bail against the handle. The wheels should spin. The tires on your unit may be over-inflated for shipping purposes. Reduce the tire pressure before operating the unit. Recommended operating tire pressure is approximately 20 p.s.i.
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SECTION5: OPERATING YOURTILLER NOTE: Engine is shipped without oil. WARNING: Use the reverse NOTE: tine drive when tilling virgin ground, sod or hard soil. Use the forward tine drive when cultivating or tilling soft ground. the clutch adjustment. Refer to "Checking the Clutch Adjustment" section of the Assembly Instructions. WARNING: When operating the tiller for the first time, use the depth stake setting that gives 1 inch of tilling depth (second hole from the top).
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Placesideshieldinpositiondesired.Replacewing nutsandtightensecurely. __- / Hole for Lowest (Shallowest) IMPORTANT: When using the forward tine drive, lower the depth stake (use a shallower tilling depth) to make certain the tines do not run across the ground. selection handle with the wheels or tines ARNING: Do not move the gear engaged. Make certain the unit is stopped completely before changing the gear selection. _hb Shields Position • Front \ _*_ Rear Wing Squeeze the clutch control bail aga
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SECTION7: SERVICE Clutch Bail--Lubricate the pivot point on the clutch bail and the cable at least once a season with light oil. The control must operate freely in both directions. Transmission_The transmission is pre-lubricated and sealed at the factory. It requires no checking unless the transmission is disassembled. To fill with grease, lay the right half of the transmission on its side. Add 30 ounces of Benalene 920 grease.
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Torx Screws Idler Pulley Rod Belt Cover \ I lex Cap Nut Self Screw Engine Pulley _ Belt Keeper Brkt. Idler Brkt. Figure 10 Figure 9 Tires Upon reassembly, make certain the belt is routed over the idler pulley and ir_side of belt keepers by engine pulley. See Figure 10. Recommended operating tire pressure is approximately 20 p.s,i, (check sidewall of tire for tire manufacturer's recommended pressure). Maximum tire pressure under any circumstances is 30 p,s.i.
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SECTION10: TROUBLESHOOTING GUIDE Possible IEngine fails to Istart Cause(s) Fuel tank empty, or stale fuel, Throttle control lever not in correct starting position (if so equipped), Blocked fuel line. Engine runs erratic Engine overheats Tines do not engage iTines skip over !ground iWheels do not iengage Dirty aireleaner. Choke not in ON position, Spark plug wire disconnected. Faulty spark plug. Engine flooded. Jnit running on CHOKE, Spark plug wire loose. Blocked fuel line or stale fuel.
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SECTION11: PARTSLISTFORMODEL450 SERIES 14
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Model450 Series i RER NO. ....... 1. 2. 3. 4, 5. 6. 7. 8, 9. 10. 11, 12, 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27_ i ii i PART NO, i ..................... 611-0020 i 611-0021 611-0128 611-0129 i 617-0058 617-0059 1617-0060 617-0061 617-0062 686-0108 710-0376 710-0599 710-0604A 710-3008 711-1349 712-0378 712-3004A 713-0367 713-0484 716-0865 717-0853 717-1582 717-1583 717-1584 717-1585 717-1587 7174594 i RER NO. DESCRIPTION 28. 29. 31.
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Model450Series 18 / - 20 8 / _ 3 60 '_,-_, 6 !6 61 / 4 62 ', 37 .
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Model450 Series REE NO. REF. I PART NO. DESCRIPTION 747-1152 649-0041 649-0034 710-3005 710-3056 711-0415 712-0379 712-0429 714-0147 720-0313 720-0210A 720-0278A 726-0317 735-0246 736-0117 736-0242 738-0958 784-0190 764-0191 Shift Rod 2. 3. 4. 5. 6. 7. 8. 9. 10. 1t. 12. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 786-0120 747-1219 786-0181 686-0044A 710-0176 710-3008 710-3097 712-0421 736-0169 712-3004A 726-0106 Depth Stake Bail Clutch Shift Lever Rod 32.
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Model450 Series 18 27 46 45 _ _ 12 f_ 9 17 24 1 10 25 14 28 11 2(_ ¸ 44 21 7 3 22 40 L 23 5 43 s 42 16 _°_ 41 39 32 34 _o 31 30 29 18
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Model450 Series I NO, _ PART NO. DESCRIPTION 1, _686-0111 _Belt Cover Brkt. Ass'y 2. 710-0237 Hex Bolt 5/16-24 x .62" Lg. 3. 1710-0412 Hex Bolt1/4-28 4. 1710-0502A 5. 6. 7. 8. 9. 10. 11. 12, 13. 14. 15. 16. 17. 18. 710-0591 710-0599 710-0723 712-0266 712-0267 714-0104 736-0104 736-0119 736-0176 736-0271 736-0329 736-0452 ;738-0876 746-!117 HexWash.TT-SemsScrew3!8-16x 1,250" Lg. Hex Bolt 3/8-24 x 1.00 19. 747-1159 20. 754-0434 21. 756-0405 22, 756-0971 756-0972 -'2324, 756-1162 24.
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MANUFACTURER'S LIMITED WARRANTY FOR: YARDMACHINES The limited warranty set forth below is given by MTD PRODUCTS INC ("MTD") with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD warrants this product against defects in material and workmanship 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 material or workmanship.