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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

  • Bell Washer for MTD 21AA415A731 - Part 736-0452

    Tine/wheels diagram

    Bell Washer

    Part #736-0452
    In Stock
    $31.12
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  • Reinforcement Plate for MTD 21AA415A731 - Part 786-0086-0637

    Gear case diagram

    Reinforcement Plate

    Part #786-0086

    Replaced by #786-0086-0637

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    Manufacturer substitution
    This part replaces 786-0086. Substitute parts can look different from the original.
    In Stock
    $35.91
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  • Tiller Tine Shaft Oil Seal for MTD 21AA415A731 - Part 921-0378

    Gear case diagram

    Shaft Seal

    Part #721-0378

    Replaced by #921-0378

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    Manufacturer substitution
    This part replaces 721-0378. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $25.63
    19% OFF Phone Price : $31.63Info Icon
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  • Tiller Drive Belt for MTD 21AA415A731 - Part 954-0438

    Tine/wheels diagram

    V-belt

    Part #754-0438

    Replaced by #954-0438

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    Manufacturer substitution
    This part replaces 754-0438. Substitute parts can look different from the original.
    Get free shipping with Automatic Reorder
    In Stock
    $65.95
    8% OFF Phone Price : $71.95Info Icon
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  • Lawn & Garden Equipment Flat Washer for MTD 21AA415A731 - Part 936-0256

    Tine/wheels diagram

    Washer

    Part #736-0256

    Replaced by #936-0256

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    Manufacturer substitution
    This part replaces 736-0256. Substitute parts can look different from the original.
    In Stock
    $34.68
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  • Agri-fab Log Splitter Hex Jam Nut for MTD 21AA415A731 - Part 712-3008

    Shield & handle diagram

    Hex Jam Nut

    Part #712-3008

    Replaced by #712-3008

    Info Icon
    Manufacturer substitution
    This part replaces 712-3008. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.16
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  • Lawn Tractor Flat Washer for MTD 21AA415A731 - Part 936-0336

    Gear case diagram

    Flat Washer

    Part #736-0336

    Replaced by #936-0336

    Info Icon
    Manufacturer substitution
    This part replaces 736-0336. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.20
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  • Snowblower Ball Bearing for MTD 21AA415A731 - Part 941-0563

    Gear case diagram

    Ball Bearing

    Part #741-0563

    Replaced by #941-0563

    Info Icon
    Manufacturer substitution
    This part replaces 741-0563. Substitute parts can look different from the original.
    In Stock
    $44.09
    12% OFF Phone Price : $50.09Info Icon
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  • Shield for MTD 21AA415A731 - Part 786-0113A

    Shield & handle diagram

    Tine Shield

    Part #786-0113

    Replaced by #786-0113A

    Info Icon
    Manufacturer substitution
    This part replaces 786-0113. Substitute parts can look different from the original.
    In Stock
    $104.53
    Minus Item
    Qty
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  • Lawn & Garden Equipment Knob for MTD 21AA415A731 - Part 712-0421

    Shield & handle diagram

    Tiller Wing Nut

    Part #712-0421

    Replaced by #712-0421

    Info Icon
    Manufacturer substitution
    This part replaces 712-0421. Substitute parts can look different from the original.
    This item is not returnable
    Check Availability
    $2.90
    26% OFF Phone Price : $3.90Info 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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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.…

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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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