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Troybilt
Rear-Tine Tiller

Model # 21A-645A711 Official Troybilt rear-tine tiller

Here are the diagrams and repair parts for Official Troybilt 21A-645A711 rear-tine tiller, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 34 parts  |
Nut 712-3000
Nut

Part #712-3000

This item is not returnable
$6.17
In Stock
Flat Washer 736-0275
#11

Tine hood/handlebar diagram

Flat washer

Part #736-0275

$11.86
In Stock
Hex Nut 712-0121
#25

Tine hood/handlebar diagram

Hex nut

Part #712-0121

This item is not returnable
$7.43
In Stock
Bell Washer 736-0452
#30

Bumper/wheel assembly diagram

Bell washer

Part #736-0452

$8.00
In Stock
Hex L-nut 712-3009
Hex l-nut

Part #712-3009

$11.86
In Stock
Cable Bracket 786-04107
#34

Bumper/wheel assembly diagram

Cable bracket

Part #786-04107

This item is not returnable
$3.64
In Stock
Sears Snowblower Flat Washer (replaces 936-0159) 736-0159
#1

Bumper/wheel assembly diagram

Sears snowblower flat washer (replaces 936-0159)

Part #736-0159

This item is not returnable
$5.73 | 
15% OFF Phone Price : $6.73
In Stock
Toro Lawn & Garden Equipment Washer 736-0315
#42

Bumper/wheel assembly diagram

Toro lawn & garden equipment washer

Part #736-0315

This item is not returnable
$11.74
In Stock
Belt Cover 731-05268
#8

Bumper/wheel assembly diagram

Belt cover

Part #731-05268

$53.11
In Stock
Tiller Engine Bracket 786-04068
#12

Bumper/wheel assembly diagram

Tiller engine bracket

Part #786-04068

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

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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 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 won't my tillers wheels or tines turn?

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

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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 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'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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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 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.

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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.…

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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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A guide to garden tillers

A guide to garden tillers

Rear tine tiller or front tine tiller, what to know to help in choosing the correct one for your needs.…

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