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Troybilt 21A-644H766 tiller Parts

Here are the diagrams and repair parts for Troybilt 21A-644H766 tiller, as well as links to manuals and error code tables, if available.

Troybilt 21A-644H766 tiller
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Browse Parts for 21A-644H766 Tillers

  • Lawn & Garden Equipment Hex Flange Screw for Troybilt 21A-644H766 - Part 710-04048

    Tine hood/transmission diagram

    Hex Flange Screw

    Part #1186331

    Replaced by #710-04048

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    Manufacturer substitution
    This part replaces 1186331. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.77
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  • Ace Lawn & Garden Equipment Hex Bolt for Troybilt 21A-644H766 - Part 710-0888

    Engine bracket/belt/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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  • Tiller Tine (powder Black) for Troybilt 21A-644H766 - Part 742-04032-0637

    Wheel shaft/tine shaft diagram

    "tine-11"""

    Part #1817060

    Replaced by #742-04032-0637

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    Manufacturer substitution
    This part replaces 1817060. Substitute parts can look different from the original.
    In Stock
    $37.02
    14% OFF Phone Price : $43.02Info Icon
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  • Ace Tiller Idler Pulley for Troybilt 21A-644H766 - Part 756-04170

    Engine bracket/belt/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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  • Ace Tiller Wheel Axle Oil Seal for Troybilt 21A-644H766 - Part 921-04031

    Transmission housing assembly diagram

    Oil Seal

    Part #721-04031

    Replaced by #921-04031

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    Manufacturer substitution
    This part replaces 721-04031. Substitute parts can look different from the original.
    This item is not returnable
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    $19.93
    9% OFF Phone Price : $21.93Info Icon
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  • Ace Tiller Bushing for Troybilt 21A-644H766 - Part 941-04300

    Wheel shaft/shim diagram

    Bushing

    Part #GW-1086

    Replaced by #941-04300

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    Manufacturer substitution
    This part replaces GW-1086. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $25.39
    19% OFF Phone Price : $31.39Info Icon
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  • High Pro Key for Troybilt 21A-644H766 - Part 714-04059

    Wheel shaft/shim 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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  • Tiller Shaft for Troybilt 21A-644H766 - Part 911-04078

    Wheel shaft/shim diagram

    Tiller Shaft

    Part #711-04078

    Replaced by #911-04078

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    Manufacturer substitution
    This part replaces 711-04078. Substitute parts can look different from the original.
    In Stock
    $220.68
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  • Tiller Worm Gear for Troybilt 21A-644H766 - Part 917-04381

    Wheel shaft/shim diagram

    Worm Gear

    Part #1916542

    Replaced by #917-04381

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    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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  • Transmission Cover for Troybilt 21A-644H766 - Part 786-04359

    Transmission housing assembly diagram

    Cover

    Part #1916641

    Replaced by #786-04359

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    Manufacturer substitution
    This part replaces 1916641. Substitute parts can look different from the original.
    In Stock
    $35.62
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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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