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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 for21A-450 Tillers

  • Mtd Tiller Gear Case Shaft Spur Gear, 44-tooth for MTD 21A-450 - Part 717-1582B

    Gear case assembly diagram

    Spur Gear

    Part #717-1582

    Replaced by #717-1582B

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    Manufacturer substitution
    This part replaces 717-1582. Substitute parts can look different from the original.
    In Stock
    $141.39
    8% OFF Phone Price : $153.39Info Icon
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  • Shield for MTD 21A-450 - Part 786-0090A-0637

    Handle/tine adapter/shield diagram

    Shield

    Part #786-0090

    Replaced by #786-0090A-0637

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    Manufacturer substitution
    This part replaces 786-0090. Substitute parts can look different from the original.
    In Stock
    $101.34
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    Qty
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  • Tiller Washer for MTD 21A-450 - Part 936-0104

    Outer and inner engine pulley/wheels diagram

    Washer

    Part #736-0104

    Replaced by #936-0104

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    Manufacturer substitution
    This part replaces 736-0104. Substitute parts can look different from the original.
    In Stock
    $31.48
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  • Craftsman Lawn Tractor Snowblower Attachment Hex Screw for MTD 21A-450 - Part 710-0653

    Outer and inner engine pulley/wheels diagram

    Lawn & Garden Equipment Screw

    Part #710-0653

    Replaced by #710-0653

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    Manufacturer substitution
    This part replaces 710-0653. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.74
    27% OFF Phone Price : $3.74Info Icon
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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

    Info Icon
    Manufacturer substitution
    This part replaces 747-1219. Substitute parts can look different from the original.
    In Stock
    $95.93
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  • 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

    Info Icon
    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
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  • Tire Wheel Assembly for MTD 21A-450 - Part 634-0112

    Outer and inner engine pulley/wheels diagram

    Tire Wheel Assembly

    Part #634-0112

    The manufacturer no longer makes this part, and there's no substitute part

  • Part for MTD 21A-450 - Part 737-0288

    #NI02

    All parts diagram

    Part

    Part #737-0288

    The manufacturer no longer makes this part, and there's no substitute part

  • Keeper Belt Idler for MTD 21A-450 - Part 786-0193

    Outer and inner engine pulley/wheels diagram

    Keeper Belt Idler

    Part #786-0193

    The manufacturer no longer makes this part, and there's no substitute part

  • Front Tine Shield Scraper Bracket for MTD 21A-450 - Part 786-0180

    Handle/tine adapter/shield diagram

    Front Tine Shield Scraper Bracket

    Part #786-0180

    The manufacturer no longer makes this part, and there's no substitute part

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....

Read more
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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