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Model # 21AB454E730 Official MTD rear-tine tiller
Here are the diagrams and repair parts for Official MTD 21AB454E730 rear-tine tiller, as well as links to manuals and error code tables, if available.
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21AB454E730 Tillers
#20
Gears/wheels diagram
Belt-v 1/2x5
Part #754-0434
Replaced by #954-0434
?
Manufacturer substitution
This part replaces 754-0434. Substitute parts can look different from the original.
Get free shipping with Automatic Reorder
$45.41 |
12% OFF Phone Price : $51.41
Back Order
#43
Gear case diagram
Bearing
Part #741-0124
Replaced by #941-0600
?
Manufacturer substitution
This part replaces 741-0124. Substitute parts can look different from the original.
$32.24 |
16% OFF Phone Price : $38.24
In Stock
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
Back Order
#28
Handle/auger housing diagram
Tiller wing nut
Part #712-0421
Replaced by #712-0421
?
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
#53
Handle/auger housing diagram
13" articula
Part #742-0305
Replaced by #742-0305A-0637
?
Manufacturer substitution
This part replaces 742-0305. Substitute parts can look different from the original.
$19.47 |
9% OFF Phone Price : $21.47
In Stock
#31
Gears/wheels diagram
Air valve
Part #734-0255
Replaced by #934-0255
?
Manufacturer substitution
This part replaces 734-0255. Substitute parts can look different from the original.
This item is not returnable
$6.76 |
13% OFF Phone Price : $7.76
In Stock
#11
Gear case diagram
Ryobi lawn tractor screw
Part #710-0376
This item is not returnable
$5.11 |
16% OFF Phone Price : $6.11
In Stock
Toro lawn & garden equipment lock washer (replaces 936-0169)
Part #736-0169
This item is not returnable
$5.26
In Stock
Yard machines lawn & garden equipment screw
Part #710-1017
This item is not returnable
$12.71 |
14% OFF Phone Price : $14.71
In Stock
Ryobi lawn & garden equipment hex nut (replaces 912-3010)
Part #712-3010
$48.86
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](https://images.ctfassets.net/fpe0ec7r30ix/4fayfsByAVcR7BUtRrtqW4/d4767bcc4d752385a93630703d32045a/RG-TIL-Replace-Tiller-Recoil-Starter-Intro-Image.jpg?fm=png&w=270&h=270)
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](https://images.ctfassets.net/fpe0ec7r30ix/1khJyw1eeQGvYKSbulrYWd/69493382c31bbf8d70b67fe7545f5e60/SPD_website_features.png?fm=png&w=270&h=270)
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
![Top questions about Sears and Sears PartsDirect](https://images.ctfassets.net/fpe0ec7r30ix/71r4g5Qhkmxm0giaIpcktG/e37c53ab5e6190ca17767b9872422fb8/Sears_PartsDirect_questions.png?fm=png&w=270&h=270)
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
![Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter](https://images.ctfassets.net/fpe0ec7r30ix/1AzuTZWEYN1RwxkYsAIp6S/ed42fde60d833366f59df2f43fcf716f/ART-carburetor-assembly-for-craftsman-snowblower-tiller-log-splitter.jpg?fm=png&w=270&h=270)
This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…