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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 Ground Drive Chain for MTD 21A-450 - Part 913-0367

    Gear case assembly diagram

    Chain

    Part #713-0367

    Replaced by #913-0367

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    Manufacturer substitution
    This part replaces 713-0367. Substitute parts can look different from the original.
    In Stock
    $47.13
    30% OFF Was : $67.40Info Icon
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    Qty
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  • Tiller Tine Shaft for MTD 21A-450 - Part 611-0021A

    Gear case assembly diagram

    Tiller Tine Shaft

    Part #611-0021

    Replaced by #611-0021A

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    Manufacturer substitution
    This part replaces 611-0021. Substitute parts can look different from the original.
    In Stock
    $142.19
    12% OFF Was : $161.12Info Icon
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  • Tiller Bearing for MTD 21A-450 - Part 941-0420B

    Gear case assembly diagram

    Bearing

    Part #741-0420

    Replaced by #941-0420B

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    Manufacturer substitution
    This part replaces 741-0420. Substitute parts can look different from the original.
    In Stock
    $47.18
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  • Craftsman Bracket for MTD 21A-450 - Part 786-0238A

    Gear case assembly diagram

    Gear Bracket

    Part #786-0238

    Replaced by #786-0238A

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    Manufacturer substitution
    This part replaces 786-0238. Substitute parts can look different from the original.
    In Stock
    $30.56
    Minus Item
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  • Mtd Tine Shield for MTD 21A-450 - Part 786-0178A

    Handle/tine adapter/shield diagram

    Tine Shield

    Part #786-0178

    Replaced by #786-0178A

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    Manufacturer substitution
    This part replaces 786-0178. Substitute parts can look different from the original.
    In Stock
    $105.96
    10% OFF Phone Price : $117.96Info Icon
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  • Tiller Nut for MTD 21A-450 - Part 738-0876A

    Outer and inner engine pulley/wheels diagram

    Shield Nut

    Part #738-0876

    Replaced by #738-0876A

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    Manufacturer substitution
    This part replaces 738-0876. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $19.80
    9% OFF Phone Price : $21.80Info Icon
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  • Belt Cover for MTD 21A-450 - Part 784-0158B

    Outer and inner engine pulley/wheels diagram

    Tiller Belt Cover

    Part #784-0158A

    Replaced by #784-0158B

    Info Icon
    Manufacturer substitution
    This part replaces 784-0158A. Substitute parts can look different from the original.
    In Stock
    $110.09
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  • Shoulder Spacer for MTD 21A-450 - Part 938-0958

    Handle/tine adapter/shield diagram

    Shoulder Spacer

    Part #738-0958

    Replaced by #938-0958

    Info Icon
    Manufacturer substitution
    This part replaces 738-0958. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.77
    Minus Item
    Qty
    Plus Item
  • Crank Assembly for MTD 21A-450 - Part 686-0109A

    Handle/tine adapter/shield diagram

    Crank Assy-s

    Part #686-0109

    Replaced by #686-0109A

    Info Icon
    Manufacturer substitution
    This part replaces 686-0109. Substitute parts can look different from the original.
    In Stock
    $52.59
    10% OFF Phone Price : $58.59Info Icon
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  • Tiller Gear Case Housing, Right for MTD 21A-450 - Part 686-0108A-0637

    Gear case assembly diagram

    Housing Assembly

    Part #686-0108

    Replaced by #686-0108A-0637

    Info Icon
    Manufacturer substitution
    This part replaces 686-0108. Substitute parts can look different from the original.
    In Stock
    $373.87
    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.…

Read more
Tiller common questions

Tiller common questions

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

Read more

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