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Troybilt 21A-634A766 tiller Parts

Here are the diagrams and repair parts for Troybilt 21A-634A766 tiller, as well as links to manuals and error code tables, if available.

Troybilt 21A-634A766 tiller
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Browse Parts for 21A-634A766 Tillers

  • Tiller Worm Gear for Troybilt 21A-634A766 - Part 917-04383

    Shim and wheel shaft diagram

    Worm Gear

    Part #1904279

    Replaced by #917-04383

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    Manufacturer substitution
    This part replaces 1904279. Substitute parts can look different from the original.
    In Stock
    $159.97
    7% OFF Phone Price : $171.97Info Icon
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  • Ace Idler Arm for Troybilt 21A-634A766 - Part 786-04276

    Belt drive and cover diagram

    Reverse Arm

    Part #1918731

    Replaced by #786-04276

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    Manufacturer substitution
    This part replaces 1918731. Substitute parts can look different from the original.
    In Stock
    $28.57
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  • Flat Washer for Troybilt 21A-634A766 - Part 736-04192

    Belt drive and cover diagram

    Shim

    Part #GW-1138-2

    Replaced by #736-04192

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    Manufacturer substitution
    This part replaces GW-1138-2. Substitute parts can look different from the original.
    In Stock
    $12.46
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  • Tiller Ring Retainer for Troybilt 21A-634A766 - Part 716-04102

    Driveshaft assembly diagram

    Retaining Ring

    Part #GW-9517

    Replaced by #716-04102

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    Manufacturer substitution
    This part replaces GW-9517. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.09
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  • Lawn Tractor Mandrel Shaft Spacer for Troybilt 21A-634A766 - Part 941-04299

    Driveshaft assembly diagram

    Drive Bearing Cup

    Part #GW-9400

    Replaced by #941-04299

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    Manufacturer substitution
    This part replaces GW-9400. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $34.32
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  • Shld Asm for Troybilt 21A-634A766 - Part 686-04076A-0638

    Tine hood/transmission diagram

    Hood Assembly

    Part #686-04043

    Replaced by #686-04076A-0638

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    Manufacturer substitution
    This part replaces 686-04043. Substitute parts can look different from the original.
    In Stock
    $114.88
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  • Lawn & Garden Equipment Flat Washer for Troybilt 21A-634A766 - Part 736-04304

    Driveshaft assembly diagram

    Washer

    Part #GW-50043

    Replaced by #736-04304

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    Manufacturer substitution
    This part replaces GW-50043. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.09
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  • Shim - Front Bearing Cap, .010" Thick for Troybilt 21A-634A766 - Part 736-04308

    Driveshaft assembly diagram

    Shim

    Part #GW-1224-1

    Replaced by #736-04308

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    Manufacturer substitution
    This part replaces GW-1224-1. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.09
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  • Tiller Bolo Tine, Left for Troybilt 21A-634A766 - Part 742-04227-0637

    Wheel and tire assembly diagram

    Bolo Tine

    Part #GW-50049-02

    Replaced by #742-04227-0637

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    Manufacturer substitution
    This part replaces GW-50049-02. Substitute parts can look different from the original.
    In Stock
    $27.45
    18% OFF Phone Price : $33.45Info Icon
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  • Tiller Worm Gear for Troybilt 21A-634A766 - Part 917-04381

    Shim and wheel shaft diagram

    Worm Gear

    Part #1916542

    Replaced by #917-04381

    Info Icon
    Manufacturer substitution
    This part replaces 1916542. Substitute parts can look different from the original.
    In Stock
    $177.00
    6% OFF Phone Price : $189.00Info 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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