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MTD
Front-Tine Tiller

Model # 21A-395A729 Official MTD front-tine tiller

Here are the diagrams and repair parts for Official MTD 21A-395A729 front-tine tiller, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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Showing 10 of 240 parts  |
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#3

Tine assembly diagram

Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

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This item is not returnable
$4.91 | 
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Yard Machines Lawn & Garden Equipment Bell Washer (replaces 936-0242) 736-0242
Yard machines lawn & garden equipment bell washer (replaces 936-0242)

Part #736-0242

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$6.58 | 
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Ryobi Stop Nut 712-0429
#43

Frame/handles/wheels diagram

Ryobi stop nut

Part #712-0429

This item is not returnable
$7.06
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Lawn Tractor Hex Bolt 710-3008
Lawn tractor hex bolt

Part #710-3008

This item is not returnable
$4.62 | 
18% OFF Phone Price : $5.62
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Belt 754-0428
#48

Tine assembly diagram

Belt

Part #754-0428

Replaced by #954-0428

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Manufacturer substitution
This part replaces 754-0428. Substitute parts can look different from the original.

Get free shipping with Automatic Reorder

$39.73 | 
13% OFF Phone Price : $45.73
In Stock
Lawn & Garden Equipment Lock Nut (replaces 912-0442) 712-0442
#1

Frame/handles/wheels diagram

Lawn & garden equipment lock nut (replaces 912-0442)

Part #712-0442

$11.89
In Stock
Aircap Tiller Idler Pulley 756-0313
#7

Tine assembly diagram

Aircap tiller idler pulley

Part #756-0313

This item is not returnable
$30.11 | 
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Ryobi Lawn Tractor Screw 710-0604A
#35

Frame/handles/wheels diagram

Ryobi lawn tractor screw

Part #710-0604A

This item is not returnable
$5.62 | 
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Sears Lawn & Garden Equipment Hex Bolt 710-0602
#36

Frame/handles/wheels diagram

Sears lawn & garden equipment hex bolt

Part #710-0602

This item is not returnable
$5.63 | 
15% OFF Phone Price : $6.63
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Inner Tine Assembly 642-0003
#21

Tine assembly diagram

Inner tine assembly

Part #642-0003

Replaced by #642-0003-0637

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Manufacturer substitution
This part replaces 642-0003. Substitute parts can look different from the original.
$81.99 | 
7% OFF Phone Price : $87.99
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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 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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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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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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