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MTD 21AA412A052 rear-tine tiller Parts

Here are the diagrams and repair parts for MTD 21AA412A052 rear-tine tiller, as well as links to manuals and error code tables, if available.

MTD 21AA412A052 rear-tine tiller
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Browse Parts for 21AA412A052 Tillers

  • Shift Wheel Assembly for MTD 21AA412A052 - Part 611-04073

    Gear case diagram

    Shift Wheel Assembly

    Part #611-04073

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

  • Hand Bracket for MTD 21AA412A052 - Part 786-0108

    Handle & tine shield diagram

    Hand Bracket

    Part #786-0108

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

  • Hand Bracket for MTD 21AA412A052 - Part 786-0109

    Handle & tine shield diagram

    Hand Bracket

    Part #786-0109

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

  • Button Plug for MTD 21AA412A052 - Part 726-0331

    Gear case diagram

    Button Plug

    Part #726-0331

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

  • Jackshaft Shaft for MTD 21AA412A052 - Part 738-0884

    Gear case diagram

    Jackshaft Shaft

    Part #738-0884

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

  • Case Assy Ge for MTD 21AA412A052 - Part 686-0038

    Gear case diagram

    Case Assy Ge

    Part #686-0038

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

  • Flat Washer for MTD 21AA412A052 - Part 736-0541

    Gear case diagram

    Flat Washer

    Part #736-0541

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

  • Rim Assembly (for Models 643b, 645a) for MTD 21AA412A052 - Part 634-04218

    Drive system diagram

    Rim Assembly (for Models 643b, 645a)

    Part #634-04218

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

  • Gear Assembly for MTD 21AA412A052 - Part 617-0004

    Gear case diagram

    Gear Assembly

    Part #617-0004

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

  • Sprocket Gear for MTD 21AA412A052 - Part 617-0003

    Gear case diagram

    Sprocket Gear

    Part #617-0003

    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

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Find the right carburetor assembly for a 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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