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MTD 21A-450 rear tine gas tiller

MTD 21A-450 rear tine gas tiller Parts

Here are the diagrams and repair parts for MTD 21A-450 rear tine gas tiller, as well as links to manuals and error code tables, if available.

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Browse Parts for 21A-450 Tillers

  • Tiller Tire for MTD 21A-450 - Part 734-1796A

    Outer and inner engine pulley/wheels diagram

    Super Tire

    Part #734-1796

    Replaced by #734-1796A

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    Manufacturer substitution
    This part replaces 734-1796. Substitute parts can look different from the original.
    In Stock
    $154.15
    7% OFF Phone Price : $166.15Info Icon
    Minus Item
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  • Tiller Drive Control Bar for MTD 21A-450 - Part 747-1219A-0637

    Handle/tine adapter/shield diagram

    Clutch Bail

    Part #747-1219

    Replaced by #747-1219A-0637

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    Manufacturer substitution
    This part replaces 747-1219. Substitute parts can look different from the original.
    In Stock
    $46.76
    Minus Item
    Qty
    Plus Item
  • Kmart Tiller Tine Adapter Plate for MTD 21A-450 - Part 784-0160-0637

    Handle/tine adapter/shield diagram

    Tine Adapt.a

    Part #784-0160

    Replaced by #784-0160-0637

    Info Icon
    Manufacturer substitution
    This part replaces 784-0160. Substitute parts can look different from the original.
    In Stock
    $120.16
    9% OFF Phone Price : $132.16Info Icon
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    Qty
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  • Gear Assembly for MTD 21A-450 - Part 617-0062A

    Gear case assembly diagram

    Gear Assembly

    Part #617-0062

    Replaced by #617-0062A

    Info Icon
    Manufacturer substitution
    This part replaces 617-0062. Substitute parts can look different from the original.
    In Stock
    $160.96
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  • Shield for MTD 21A-450 - Part 786-0113A

    Handle/tine adapter/shield diagram

    Tine Shield

    Part #786-0113

    Replaced by #786-0113A

    Info Icon
    Manufacturer substitution
    This part replaces 786-0113. Substitute parts can look different from the original.
    In Stock
    $104.53
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    Qty
    Plus Item
  • Ryobi Tiller Spacer for MTD 21A-450 - Part 750-0885A

    Handle/tine adapter/shield diagram

    Spacer

    Part #750-0885

    Replaced by #750-0885A

    Info Icon
    Manufacturer substitution
    This part replaces 750-0885. Substitute parts can look different from the original.
    In Stock
    $21.00
    Minus Item
    Qty
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  • Tiller Depth Stake for MTD 21A-450 - Part 786-0120-0637

    Handle/tine adapter/shield diagram

    Depth Bar Assembly

    Part #786-0120

    Replaced by #786-0120-0637

    Info Icon
    Manufacturer substitution
    This part replaces 786-0120. Substitute parts can look different from the original.
    In Stock
    $101.00
    11% OFF Phone Price : $113.00Info Icon
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    Qty
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  • Tiller Belleville Washer for MTD 21A-450 - Part 936-0253

    Handle/tine adapter/shield diagram

    Washer

    Part #736-0253

    Replaced by #936-0253

    Info Icon
    Manufacturer substitution
    This part replaces 736-0253. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $5.86
    15% OFF Phone Price : $6.86Info Icon
    Minus Item
    Qty
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  • Lawn Tractor Tire Valve Stem for MTD 21A-450 - Part 934-0255

    Outer and inner engine pulley/wheels diagram

    Air Valve

    Part #734-0255

    Replaced by #934-0255

    Info Icon
    Manufacturer substitution
    This part replaces 734-0255. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.54
    12% OFF Phone Price : $8.54Info Icon
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Flat Washer for MTD 21A-450 - Part 936-0117

    Handle/tine adapter/shield diagram

    Washer

    Part #736-0117

    Replaced by #936-0117

    Info Icon
    Manufacturer substitution
    This part replaces 736-0117. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $13.00
    Minus Item
    Qty
    Plus Item

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

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Why does my tiller's engine leak oil or gas?

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, lea…

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Why does my tiller's engine run roughly or misfire?

Main causes: dirty carburetor, engine needs tune up, stale gas…

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Why won't my tiller's engine start?

Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter…

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Why do my tiller's wheels turn but the tines don't?

Main causes: broken shaft clevis pins, transmission failure…

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Why does my tiller turn the soil poorly?

Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper de…

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Why do my tiller's tines turn but the wheels don't?

Main causes: clutch cable problems, faulty transmission…

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Why won't my tillers wheels or tines turn?

Main causes: worn or broken drive belts, bad transmission, clutch cable problems…

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Most common repair guides to help fix your tillers

These step-by-step repair guides will help you safely fix what’s broken on your tiller.

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How to replace a tiller recoil starter

How to replace a tiller recoil starter

The recoil starter spins the engine when you pull the starter rope, and the rope retracts when released. If the recoil s…

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Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your tillers

Use the advice and tips in these articles and videos to get the most out of your tiller.

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…

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Tiller common questions

Tiller common questions

These frequently asked questions might help you figure out what's wrong with your garden tiller.…

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