Rear-Tine Tiller

Model # 21AA414A752 Official MTD rear-tine tiller

Here are the diagrams and repair parts for Official MTD 21AA414A752 rear-tine tiller, as well as links to manuals and error code tables, if available.

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21AA414A752 Tillers
Bearing 741-0124
#34

Gear case diagram

Bearing

Part #741-0124

Replaced by #941-0600

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Manufacturer substitution
This part replaces 741-0124. Substitute parts can look different from the original.
BEST SELLER
$32.24 | 
16% OFF Phone Price : $38.24
In Stock
Yard Machines Lawn & Garden Equipment Bell Washer (replaces 936-0242) 736-0242
#9

Engine/wheels/tines diagram

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

Part #736-0242

This item is not returnable
$6.58 | 
13% OFF Phone Price : $7.58
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Tiller Wing Nut 712-0421
#33

Shield & handle diagram

Tiller wing nut

Part #712-0421

Replaced by #712-0421

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Manufacturer substitution
This part replaces 712-0421. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Ryobi Lawn & Garden Equipment Hex Nut (replaces 912-3010) 712-3010
#8

Engine/wheels/tines diagram

Ryobi lawn & garden equipment hex nut (replaces 912-3010)

Part #712-3010

In Stock
Toro Lawn & Garden Equipment Lock Washer (replaces 936-0169) 736-0169
#38

Shield & handle diagram

Toro lawn & garden equipment lock washer (replaces 936-0169)

Part #736-0169

This item is not returnable
In Stock
Aircap Lawn & Garden Equipment Hex Screw 710-0896
Aircap lawn & garden equipment hex screw

Part #710-0896

This item is not returnable
$5.22 | 
16% OFF Phone Price : $6.22
In Stock
Shaft Seal 721-0378
#1

Gear case diagram

Shaft seal

Part #721-0378

Replaced by #921-0378

?
Manufacturer substitution
This part replaces 721-0378. Substitute parts can look different from the original.
This item is not returnable
$24.37 | 
20% OFF Phone Price : $30.37
In Stock
Ryobi Lawn & Garden Equipment Hex Nut, 7/16-20 712-0378
#2

Gear case diagram

Ryobi lawn & garden equipment hex nut, 7/16-20

Part #712-0378

This item is not returnable
$10.56 | 
16% OFF Phone Price : $12.56
In Stock
Ryobi Tiller Detent Ball 741-0862
#43

Gear case diagram

Ryobi tiller detent ball

Part #741-0862

This item is not returnable
$6.86 | 
13% OFF Phone Price : $7.86
In Stock
Tiller Shift Fork (replaces 618-0245a) 618-0245B
#7

Gear case diagram

Tiller shift fork (replaces 618-0245a)

Part #618-0245B

$112.79 | 
10% OFF Phone Price : $124.79
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.…