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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.

MTD 21A-450 rear tine gas tiller
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Browse Parts for 21A-450 Tillers

  • Tiller Flat Washer for MTD 21A-450 - Part 936-0208

    Handle/tine adapter/shield diagram

    Flat Washer

    Part #736-0208

    Replaced by #936-0208

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    Manufacturer substitution
    This part replaces 736-0208. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.37
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  • Mtd Lawn & Garden Equipment Lock Washer for MTD 21A-450 - Part 936-0119

    Outer and inner engine pulley/wheels diagram

    Lock Washer

    Part #736-0119

    Replaced by #936-0119

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    Manufacturer substitution
    This part replaces 736-0119. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.16
    12% OFF Phone Price : $8.16Info Icon
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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

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    Manufacturer substitution
    This part replaces 734-0255. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.54
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  • 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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    This part replaces 713-0367. Substitute parts can look different from the original.
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    $20.75
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  • Clutch Collar for MTD 21A-450 - Part 717-0853A

    Gear case assembly diagram

    Fork

    Part #717-0853

    Replaced by #717-0853A

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    Manufacturer substitution
    This part replaces 717-0853. Substitute parts can look different from the original.
    In Stock
    $152.02
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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 Input Shaft for MTD 21A-450 - Part 711-1349B

    Gear case assembly diagram

    Input Shaft

    Part #711-1349

    Replaced by #711-1349B

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    Manufacturer substitution
    This part replaces 711-1349. Substitute parts can look different from the original.
    In Stock
    $111.14
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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
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  • 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
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  • Tiller Screw for MTD 21A-450 - Part 938-0689

    Handle/tine adapter/shield diagram

    Shield Bolt

    Part #738-0689

    Replaced by #938-0689

    Info Icon
    Manufacturer substitution
    This part replaces 738-0689. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $16.43
    11% OFF Phone Price : $18.43Info Icon
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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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Fall garden care: to till or not to till? Here’s how to decide

Fall garden care: to till or not to till? Here’s how to decide

Thinking about tilling your garden this fall? Learn the pros and cons of fall tilling, when it makes sense, and how to p…

Read more
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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