MTD
Rear-Tine Tiller

Model # 21AA40M1029 Official MTD rear-tine tiller

Here are the diagrams and repair parts for Official MTD 21AA40M1029 rear-tine tiller, as well as links to manuals and error code tables, if available.

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Showing 10 of 159 parts  |

Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
#6

Handle & tine shield diagram

Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

BEST SELLER
This item is not returnable
$4.40
19% OFF Phone Price : $5.40
In Stock
Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

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This item is not returnable
$4.49
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Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
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
#37

Handle & tine shield diagram

Yard machines lawn & garden equipment bell washer (replaces 936-0242)

Part #736-0242

This item is not returnable
$6.58
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Lawn & Garden Equipment Lock Washer 936-0119
#16

Drive system diagram

Lawn & garden equipment lock washer

Part #936-0119

This item is not returnable
$6.05
14% OFF Phone Price : $7.05
In Stock
Tiller Forward Drive Control Cable 946-04506
#39

Handle & tine shield diagram

Tiller forward drive control cable

Part #946-04506

$46.27
11% OFF Phone Price : $52.27
In Stock
Sears Lawn Mower Roller Wheel 756-0625
#30

Drive system diagram

Sears lawn mower roller wheel

Part #756-0625

This item is not returnable
$12.00
14% OFF Phone Price : $14.00
In Stock
Tiller Reverse Cable 946-04504
#38

Handle & tine shield diagram

Tiller reverse cable

Part #946-04504

$43.02
12% OFF Phone Price : $49.02
In Stock
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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Lawn & Garden Equipment Flange Nut 712-0700
#12

Drive system diagram

Lawn & garden equipment flange nut

Part #712-0700

This item is not returnable
$14.17
12% OFF Phone Price : $16.17
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.…

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.…