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MTD 21AA415A731 rear-tine tiller

MTD 21AA415A731 rear-tine tiller Parts

Here are the diagrams and repair parts for MTD 21AA415A731 rear-tine tiller, as well as links to manuals and error code tables, if available.

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Browse Parts for 21AA415A731 Tillers

  • Tine Assembly, Left for MTD 21AA415A731 - Part 642-0015

    Tine/wheels diagram

    Tine Assembly, Left

    Part #642-0015

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

  • Rim Assembly (for Models 643b, 645a) for MTD 21AA415A731 - Part 634-04218

    Tine/wheels diagram

    Rim Assembly (for Models 643b, 645a)

    Part #634-04218

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

  • Jackshaft Shaft for MTD 21AA415A731 - Part 738-0884

    Gear case diagram

    Jackshaft Shaft

    Part #738-0884

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

  • Rod Gear Shield for MTD 21AA415A731 - Part 747-0902

    Shield & handle diagram

    Rod Gear Shield

    Part #747-0902

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

  • Hand Bracket for MTD 21AA415A731 - Part 786-0109

    Shield & handle diagram

    Hand Bracket

    Part #786-0109

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

  • Belt Keeper Bracket Assembly for MTD 21AA415A731 - Part 686-0031A

    Tine/wheels diagram

    Belt Keeper Bracket Assembly

    Part #686-0031A

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

  • Idler Bracket for MTD 21AA415A731 - Part 786-0080

    Tine/wheels diagram

    Idler Bracket

    Part #786-0080

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

  • Control Assembly for MTD 21AA415A731 - Part 647-0014

    Shield & handle diagram

    Control Assembly

    Part #647-0014

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

  • Button Plug for MTD 21AA415A731 - Part 726-0331

    Gear case diagram

    Button Plug

    Part #726-0331

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

  • Shield Bracket for MTD 21AA415A731 - Part 786-0076

    Shield & handle diagram

    Shield Bracket

    Part #786-0076

    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.

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

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

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

Main causes: broken shaft clevis pins, transmission failure…

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

Main causes: clutch cable problems, faulty transmission…

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

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.

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…

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

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

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.…

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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