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Troybilt
Front-Tine Tiller

Model # 21A-128T063 Official Troybilt tiller/edger

Here are the diagrams and repair parts for Official Troybilt 21A-128T063 tiller/edger, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 65 parts  |
Scr Car 5/16 GW-90077
#36

Handle/wheels/tines diagram

Scr car 5/16

Part #GW-90077

Replaced by #710-0451

?
Manufacturer substitution
This part replaces GW-90077. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.42 | 
16% OFF Phone Price : $6.42
In Stock
Shaft Housing 753-04500
#NI

Transmission case diagram

Shaft housing

Part #753-04500

Replaced by #753-05469

?
Manufacturer substitution
This part replaces 753-04500. Substitute parts can look different from the original.
$44.13 | 
12% OFF Phone Price : $50.13
In Stock
Lawn & Garden Equipment Saddle Head Screw 1731025
#8

Handle/wheels/tines diagram

Lawn & garden equipment saddle head screw

Part #1731025

Replaced by #710-1174

?
Manufacturer substitution
This part replaces 1731025. Substitute parts can look different from the original.
This item is not returnable
$10.97 | 
15% OFF Phone Price : $12.97
In Stock
Clutch 1909486
#21

Transmission case diagram

Clutch

Part #1909486

$77.47
In Stock
Washer 1983713
#24

Transmission case diagram

Washer

Part #1983713

$8.97
In Stock
Brg Ball Pt/ 1983637
#7

Transmission case diagram

Brg ball pt/

Part #1983637

$51.36
In Stock
Hex Cap Screw, 1/4-20 X 710-0501
#30

Handle/wheels/tines diagram

Hex cap screw, 1/4-20 x

Part #710-0501

$12.34
In Stock
Tine Spacer 1983648
#48

Handle/wheels/tines diagram

Tine spacer

Part #1983648

$10.91
In Stock
Screw 1747166
#22

Transmission case diagram

Screw

Part #1747166

This item is not returnable
$6.97
In Stock
Ring Clip GW-9532
#41

Handle/wheels/tines diagram

Ring clip

Part #GW-9532

This item is not returnable
$6.37
In Stock

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

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

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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