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Rear-Tine Tiller

Model # 21A-644A711 Official Troybilt tiller

Here are the diagrams and repair parts for Official Troybilt 21A-644A711 tiller, as well as links to manuals and error code tables, if available.

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Browse Parts for21A-644A711 Tillers

  • Mtd Lawn And Garden Equipment Nut 712-04064
    #6

    Tine hood/transmission diagram

    Mtd lawn and garden equipment nut

    Part #712-04064

    BEST SELLER
    This item is not returnable
    $4.49
    18% OFF Phone Price : $5.49
    In Stock
  • Mtd Lawn Tractor Screw 710-0599
    Mtd lawn tractor screw

    Part #710-0599

    BEST SELLER
    This item is not returnable
    $4.91
    17% OFF Phone Price : $5.91
    Back Order
  • Lock Washer 736-0119
    Lock washer

    Part #736-0119

    Replaced by #936-0119

    ?
    Manufacturer substitution
    This part replaces 736-0119. Substitute parts can look different from the original.
    This item is not returnable
    $6.05
    14% OFF Phone Price : $7.05
    In Stock
  • Sears Lawn Tractor Screw 710-0627
    #19

    Belt cover/belts/engine bracket diagram

    Sears lawn tractor screw

    Part #710-0627

    This item is not returnable
    $6.47
    13% OFF Phone Price : $7.47
    In Stock
  • Mtd Lawn & Garden Equipment Screw, 3/8-16 X 1-3/4-in 710-0347
    Mtd lawn & garden equipment screw, 3/8-16 x 1-3/4-in

    Part #710-0347

    This item is not returnable
    $7.69
    12% OFF Phone Price : $8.69
    In Stock
  • Mtd Lawn Tractor Hex Bolt 710-3008
    Mtd lawn tractor hex bolt

    Part #710-3008

    This item is not returnable
    $4.62
    18% OFF Phone Price : $5.62
    In Stock
  • Yard Machines Lawn Tractor Bolt 710-0514
    #1

    Wheel/tire assembly diagram

    Yard machines lawn tractor bolt

    Part #710-0514

    This item is not returnable
    $5.33
    16% OFF Phone Price : $6.33
    In Stock
  • Reverse Belt 1916658
    #8

    Belt cover/belts/engine bracket diagram

    Reverse belt

    Part #1916658

    Replaced by #954-04091

    ?
    Manufacturer substitution
    This part replaces 1916658. Substitute parts can look different from the original.
    This item is not returnable

    Get free shipping with Automatic Reorder

    $27.89
    18% OFF Phone Price : $33.89
    In Stock
  • Lawn Tractor Push Cap 726-0201
    #3

    Bumper diagram

    Lawn tractor push cap

    Part #726-0201

    This item is not returnable
    $10.56
    16% OFF Phone Price : $12.56
    In Stock
  • Lawn & Garden Equipment Cable Tie 725-0157
    #13

    Cable assembly diagram

    Lawn & garden equipment cable tie

    Part #725-0157

    Replaced by #726-0178

    ?
    Manufacturer substitution
    This part replaces 725-0157. Substitute parts can look different from the original.
    This item is not returnable
    In Stock

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

Main causes: clutch cable problems, faulty transmission…

Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper de…

Main causes: worn or broken drive belts, bad transmission, clutch cable problems…

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, lea…

Main causes: broken shaft clevis pins, transmission failure…

Main causes: dirty carburetor, engine needs tune up, stale gas…

Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter…

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.

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…

Repair difficulty
Time required
 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.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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.…

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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