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MTD 21A-450 Series Operator's Manual

Mtd rear tine tiller operator's 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 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 368022 Cleveland, Ohio 44136-9722.
MTD PRODUCTS INC P.O. BOX 368022 CLEVELAND, OHIO 44136-9722
FORM NO. 770-10194C.fm
PRINTED IN U.S.A.
(9/99)

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Summary of Contents for MTD 21A-450 Series

  • 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 368022 Cleveland, Ohio 44136-9722. MTD PRODUCTS INC P.O. BOX 368022 CLEVELAND, OHIO 44136-9722 FORM NO. 770-10194C.fm PRINTED IN U.S.A.

  • Page 2: Table Of Contents

    Troubleshooting ... 13 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. Please read and understand what it says. Before you start assembling your new equipment, please locate the model plate on the equipment and copy the information from it in the space provided below.

  • Page 3: Important Safe Operation Practices

    California to cause cancer, birth defects or other reproductive harm. DANGER: Your tiller was built to be operated according to the rules for safe operation in this manual. As with any type of power equipment, carelessness or error on the part of the operator can result in serious injury.
  • Page 4 Be alert and turn the unit off if a child enters the area. • Never allow children under the age of 14 to operate the tiller. SERVICE • Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive.

  • Page 5: Loose Parts

    SECTION 2: LOOSE PARTS Handle Assembly Depth Stake Control Assembly NOTE: Cable tie not shown.

  • Page 6: Assembling Your Tiller

    Place flat washer on hex bolt and thread “T” knob onto the hex bolt. See Figure 2. Tighten securely. • Tip the tiller back down so it rests on the depth stake (transport position). ATTACHING THE HANDLE ASSEMBLY Clevis Pin Hairpin Clip •...
  • Page 7 NEUTRAL, start the engine. Refer to the separate engine manual. Standing on the right side of the tiller, examine the belt (inside the belt cover). It should not be turning. NOTE: Do not put fingers under the belt cover.

  • Page 8: Know Your Tiller

    See Engine manual for further information. GEAR SELECTION HANDLE The gear selection handle is located in the center of the handle on the tiller. It is used to select NEUTRAL, Clutch REVERSE, or one of the FORWARD modes (see Cable below).

  • Page 9: Operating Your Tiller

    Move choke lever to CHOKE position. NOTE: A warm engine may not require choking. • Stand at side of tiller. Grasp the starter handle with your right hand and pull out slowly, until it pulls slightly harder. Place your left hand on the lower portion of the upper handle.

  • Page 10: Making Adjustments

    NOTE: Make certain the gear selection indicator is correctly positioned before engaging the clutch handle. If it is between gears, the engine will stall. To transport tiller, do not engage the tines. Select the wheel drive only. Side Shields For best results, it is recommended the garden be tilled twice (lengthwise, then widthwise) to pulverize the soil.

  • Page 11: Maintaining Your Tiller

    The spark plug should be cleaned and the gap reset every 25 hours of engine operation. Spark plug replacement is recommended at the start of each tiller season; check engine manual for correct plug type and gap specification.

  • Page 12: Belt Replacement

    • Disconnect and ground the spark plug wire against the engine. • Remove the belt cover from the left side of the tiller as follows: See Figure 10.Remove two torx screws from the top of belt cover. • Remove the hex cap nut and flat washer from the side of the belt cover.

  • Page 13: Off-Season Storage

    SECTION 9: OFF-SEASON STORAGE If the tiller will not be used for a period longer than 30 days, the following steps should be taken to prepare the tiller for storage. • Clean the exterior of engine and the entire tiller thoroughly.

  • Page 14: Parts List

    SECTION 11: PARTS LIST FOR MODEL 450 SERIES...
  • Page 15 700-xxxx-0662. Black — 0691; Black, Powder — 0637; Blue, Midnight — 0667; Charcoal — 0483; Grey — 0648; Grey, Oyster — 0662; Orange — 0606; Red — 0650; Red, MTD — 0638; Silver — 0629; Yellow — 0674. REF.
  • Page 16 MODEL 450 SERIES 12 15...
  • Page 17 MODEL 450 SERIES REF. PART NO. 747-1152 Shift Rod 649-0041 Upper Handle Ass’y 649-0034 Lower Handle Ass’y 710-3005 Hex Screw 3/8-16 x 1.25 710-3056 Hex Screw 5/16-18 x 3.25 711-0415 Clevis Pin 3/8-1.62 712-0379 Flange Lock Nut 3/8-24 712-0429 Hex Lock Nut 5/16-18 714-0147 Cotter Pin 720-0313...
  • Page 18 MODEL 450 SERIES 3 40...
  • Page 19 700-xxxx-0662. Black — 0691; Black, Powder — 0637; Blue, Midnight — 0667; Charcoal — 0483; Grey — 0648; Grey, Oyster — 0662; Orange — 0606; Red — 0650; Red, MTD — 0638; Silver — 0629; Yellow — 0674. REF.

  • Page 20: P.o. Box

    MANUFACTURER’S LIMITED WARRANTY The limited warranty set forth below is given by MTD PRODUCTS INC (“MTD”) with respect to new merchan- dise purchased and used in the United States, its posses- sions and territories. MTD warrants this product against defects in material and...

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