Front-Tine Tiller

Model # 21AK125G799 Official MTD mini tiller

Here are the diagrams and repair parts for Official MTD 21AK125G799 mini tiller, as well as links to manuals and error code tables, if available.

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21AK125G799 Tillers
Ace Line Trimmer Carburetor (replaces 751-15112, 751-15112a, 753-08984) 753-06288
#9

Shortblock/fuel tank diagram

Ace line trimmer carburetor (replaces 751-15112, 751-15112a, 753-08984)

Part #753-06288

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$37.58
14% OFF Phone Price : $43.58
In Stock
Sleeve Bolt 791-180288
#32

Shield/tines/handle diagram

Sleeve bolt

Part #791-180288

Replaced by #710-0599

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Manufacturer substitution
This part replaces 791-180288. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.91
17% OFF Phone Price : $5.91
In Stock
Line Trimmer Carburetor Insulator Assembly 753-06189
#7

Shortblock/fuel tank diagram

Line trimmer carburetor insulator assembly

Part #753-06189

BEST SELLER
This item is not returnable
$10.22
16% OFF Phone Price : $12.22
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Ace Cultivator Air Filter 753-06836
#14

Shortblock/fuel tank diagram

Ace cultivator air filter

Part #753-06836

This item is not returnable
$5.64
15% OFF Phone Price : $6.64
In Stock
Ace Tiller Fuel Tank Kit 753-06846
#36

Shortblock/fuel tank diagram

Ace tiller fuel tank kit

Part #753-06846

This item is not returnable
$24.83
19% OFF Phone Price : $30.83
In Stock
Troybilt Lawn & Garden Equipment O-ring 753-06184
#6

Shortblock/fuel tank diagram

Troybilt lawn & garden equipment o-ring

Part #753-06184

This item is not returnable
$5.12
16% OFF Phone Price : $6.12
In Stock
Screw 753-05253
#12

Shortblock/fuel tank diagram

Screw

Part #753-05253

Replaced by #710-04517

?
Manufacturer substitution
This part replaces 753-05253. Substitute parts can look different from the original.
This item is not returnable
$8.30
11% OFF Phone Price : $9.30
In Stock
Ace Cultivator Air Filter Cover 753-06837
#15

Shortblock/fuel tank diagram

Ace cultivator air filter cover

Part #753-06837

This item is not returnable
$5.64
15% OFF Phone Price : $6.64
In Stock
Tiller Air Cleaner Base 753-06916
#11

Shortblock/fuel tank diagram

Tiller air cleaner base

Part #753-06916

This item is not returnable
In Stock
Ace Cultivator Throttle Control Bar Spring 753-05940
#3

Shield/tines/handle diagram

Ace cultivator throttle control bar spring

Part #753-05940

This item is not returnable
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.…