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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 for21A-644H766 Tillers

  • Ace Idler Arm for Troybilt 21A-644H766 - Part 786-04276

    Engine bracket/belt/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
    $48.17
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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
    $220.78
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  • Tiller Tine Shaft Oil Seal for Troybilt 21A-644H766 - Part 921-04036

    Transmission housing assembly diagram

    Oil Seal

    Part #721-04036

    Replaced by #921-04036

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    Manufacturer substitution
    This part replaces 721-04036. 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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  • 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.
    In Stock
    $29.68
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  • Lawn Mower Drive Control Cable for Troybilt 21A-644H766 - Part 946-04208

    Handlebar/cable diagram

    Drive Cable

    Part #1918745

    Replaced by #946-04208

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    Manufacturer substitution
    This part replaces 1918745. Substitute parts can look different from the original.
    In Stock
    $46.28
    11% OFF Phone Price : $52.28Info Icon
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  • Tiller Engine Pulley for Troybilt 21A-644H766 - Part 756-04198A

    Engine bracket/belt/cover diagram

    Tiller Engine Pulley

    Part #619-04016

    Replaced by #756-04198A

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    Manufacturer substitution
    This part replaces 619-04016. Substitute parts can look different from the original.
    In Stock
    $8.49
    37% OFF Was : $13.58Info Icon
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  • Mtd Lawn & Garden Equipment Hex Nut for Troybilt 21A-644H766 - Part 712-3010

    Bumper diagram

    Hex Nut

    Part #712-0267

    Replaced by #712-3010

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    Manufacturer substitution
    This part replaces 712-0267. Substitute parts can look different from the original.
    In Stock
    $55.59
    10% OFF Phone Price : $61.59Info Icon
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  • Belt Cover for Troybilt 21A-644H766 - Part 731-05268

    Engine bracket/belt/cover diagram

    Belt Cover

    Part #1916660

    Replaced by #731-05268

    Info Icon
    Manufacturer substitution
    This part replaces 1916660. Substitute parts can look different from the original.
    In Stock
    $105.45
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  • Mtd Tiller Drive Belt for Troybilt 21A-644H766 - Part 954-04090

    Engine bracket/belt/cover diagram

    Belt

    Part #1916657

    Replaced by #954-04090

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    Manufacturer substitution
    This part replaces 1916657. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $28.29
    17% OFF Phone Price : $34.29Info Icon
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  • Torsion Spring for Troybilt 21A-644H766 - Part 732-04320

    Tine hood/transmission diagram

    Torsion Spring

    Part #GW-9384

    Replaced by #732-04320

    Info Icon
    Manufacturer substitution
    This part replaces GW-9384. Substitute parts can look different from the original.
    In Stock
    $30.92
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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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