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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

  • Ace Lawn & Garden Equipment Hex Bolt for Troybilt 21A-634A766 - Part 710-0888

    Belt drive and cover diagram

    Hex Screw

    Part #710-0117

    Replaced by #710-0888

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    Manufacturer substitution
    This part replaces 710-0117. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.49
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  • Lawn & Garden Equipment Cotter Pin for Troybilt 21A-634A766 - Part 714-04048

    Wheel and tire assembly diagram

    Clinch Pin

    Part #GW-9338

    Replaced by #714-04048

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    Manufacturer substitution
    This part replaces GW-9338. Substitute parts can look different from the original.
    In Stock
    $14.74
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  • Tiller Washer for Troybilt 21A-634A766 - Part 748-04087A

    Belt drive and cover diagram

    Shoulder Washer

    Part #1917746

    Replaced by #748-04087A

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    Manufacturer substitution
    This part replaces 1917746. Substitute parts can look different from the original.
    This item is not returnable
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    $11.86
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  • High Pro Key for Troybilt 21A-634A766 - Part 714-04059

    Shim and wheel shaft diagram

    High Pro Key

    Part #GW-9305

    Replaced by #714-04059

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    Manufacturer substitution
    This part replaces GW-9305. Substitute parts can look different from the original.
    In Stock
    $12.46
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  • Ace Tiller Idler Pulley for Troybilt 21A-634A766 - Part 756-04170

    Belt drive and cover diagram

    Pulley

    Part #GW-9090

    Replaced by #756-04170

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    Manufacturer substitution
    This part replaces GW-9090. Substitute parts can look different from the original.
    In Stock
    $47.84
    11% OFF Phone Price : $53.84Info Icon
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  • Yard Machines Plug-pipe 3/ for Troybilt 21A-634A766 - Part 737-04202

    Transmission housing diagram

    Plug-pipe 3/

    Part #GW-9727

    Replaced by #737-04202

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    Manufacturer substitution
    This part replaces GW-9727. Substitute parts can look different from the original.
    In Stock
    $34.32
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  • Belt Cover for Troybilt 21A-634A766 - Part 731-05268

    Belt drive and cover diagram

    Belt Cover

    Part #1916660

    Replaced by #731-05268

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    Manufacturer substitution
    This part replaces 1916660. Substitute parts can look different from the original.
    In Stock
    $105.34
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  • Kit-service for Troybilt 21A-634A766 - Part 753-06459A

    Cable assembly / handlebars diagram

    Red Handleba

    Part #GW-55043

    Replaced by #753-06459A

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    Manufacturer substitution
    This part replaces GW-55043. Substitute parts can look different from the original.
    In Stock
    $160.10
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  • Tiller Tine Input Sprocket Assembly for Troybilt 21A-634A766 - Part 917-04380

    Shim and wheel shaft diagram

    Worm Gear

    Part #1904278

    Replaced by #917-04380

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    Manufacturer substitution
    This part replaces 1904278. Substitute parts can look different from the original.
    In Stock
    $139.25
    8% OFF Phone Price : $151.25Info Icon
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  • Drive Shaft for Troybilt 21A-634A766 - Part 911-04110

    Driveshaft assembly diagram

    Drive Shaft

    Part #711-04110

    Replaced by #911-04110

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    Manufacturer substitution
    This part replaces 711-04110. Substitute parts can look different from the original.
    In Stock
    $269.98
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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…

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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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