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MTD
Gas Walk-Behind Mower

Model # 12A-289W722 Official MTD lawn mower

Here are the diagrams and repair parts for Official MTD 12A-289W722 lawn mower, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 93 parts  |
Cable 37.37 746-1113
#3

Handle/wheels diagram

Cable 37.37

Part #746-1113

Replaced by #946-1113A

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Manufacturer substitution
This part replaces 746-1113. Substitute parts can look different from the original.
BEST SELLER
$23.67
| 
20% OFF Phone Price : $29.67
In Stock
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#44

Handle/wheels diagram

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

Part #710-0599

BEST SELLER
This item is not returnable
$4.91
| 
17% OFF Phone Price : $5.91
In Stock
Knob Wing Nut 720-0284
#11

Handle/wheels diagram

Knob wing nut

Part #720-0284

Replaced by #720-04072A

?
Manufacturer substitution
This part replaces 720-0284. Substitute parts can look different from the original.
BEST SELLER
$9.33
| 
10% OFF Phone Price : $10.33
In Stock
Wheel Asm-8 634-0190
#50A

Handle/wheels diagram

Wheel asm-8

Part #634-0190

Replaced by #634-0190A

?
Manufacturer substitution
This part replaces 634-0190. Substitute parts can look different from the original.
BEST SELLER
$34.92
| 
15% OFF Phone Price : $40.92
In Stock
Jam Nut 712-0240
#17

Handle/wheels diagram

Jam nut

Part #712-0240

Replaced by #912-0240

?
Manufacturer substitution
This part replaces 712-0240. Substitute parts can look different from the original.
This item is not returnable
$5.47
| 
15% OFF Phone Price : $6.47
In Stock
Lawn Mower Lower Handle 749-04037
#15

Handle/wheels diagram

Lawn mower lower handle

Part #749-04037

$66.59
| 
8% OFF Phone Price : $72.59
In Stock
Lawn & Garden Equipment Cable Tie 725-0157
#14

Handle/wheels diagram

Lawn & garden equipment cable tie

Part #725-0157

Replaced by #726-0178

?
Manufacturer substitution
This part replaces 725-0157. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Yard Machines Lawn & Garden Equipment Cupped Washer 736-0270
#45

Handle/wheels diagram

Yard machines lawn & garden equipment cupped washer

Part #736-0270

This item is not returnable
$5.10
| 
16% OFF Phone Price : $6.10
In Stock
Lawn Mower Height Adjuster Lever (replaces 687-02051) 732-1026
#41

Handle/wheels diagram

Lawn mower height adjuster lever (replaces 687-02051)

Part #732-1026

This item is not returnable
$10.14
| 
16% OFF Phone Price : $12.14
In Stock
Bail 747-1161A
#2

Handle/wheels diagram

Bail

Part #747-1161A

Replaced by #747-1161A-0637

?
Manufacturer substitution
This part replaces 747-1161A. Substitute parts can look different from the original.
This item is not returnable
$20.10
| 
23% OFF Phone Price : $26.10
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

View all

Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up...

Read more

Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade...

Read more

Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key...

Read more

Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel...

Read more

Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba...

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent...

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks....

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Repair difficulty
Time required
60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope....

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Repair difficulty
Time required
15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix....

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Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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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....

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Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect....

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them....

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