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MTD
Gas Walk-Behind Mower

Model # 12A-588B062 Official MTD gas lawn mower

Here are the diagrams and repair parts for Official MTD 12A-588B062 gas lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 157 parts  |
Bearing 741-0124
#8

Front wheel drive transmission 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.
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$28.71 | 
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Lawn Mower Mulching Blade 742-0742
#37A

Deck/22" blade/handle diagram

Lawn mower mulching blade

Part #742-0742

Replaced by #942-0742A

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Manufacturer substitution
This part replaces 742-0742. Substitute parts can look different from the original.

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$23.20 | 
21% OFF Phone Price : $29.20
In Stock
Yard Machines Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
#13

Deck/22" blade/handle diagram

Yard machines lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279

This item is not returnable
$6.87 | 
13% OFF Phone Price : $7.87
In Stock
Sears Lawn & Garden Equipment Plastic Plug 721-0325
#17

Front wheel drive transmission diagram

Sears lawn & garden equipment plastic plug

Part #721-0325

This item is not returnable
$6.75 | 
13% OFF Phone Price : $7.75
In Stock
Yard Machines Lawn & Garden Equipment Guide Bolt 710-1205
#15

Deck/22" blade/handle diagram

Yard machines lawn & garden equipment guide bolt

Part #710-1205

This item is not returnable
$5.01 | 
17% OFF Phone Price : $6.01
In Stock
Hex Nut 712-0267
#14

Deck/22" blade/handle diagram

Hex nut

Part #712-0267

Replaced by #712-3010

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Manufacturer substitution
This part replaces 712-0267. Substitute parts can look different from the original.
$7.71
In Stock
Sears Lawn & Garden Equipment Bell Washer 736-0331
#59

Deck/22" blade/handle diagram

Sears lawn & garden equipment bell washer

Part #736-0331

This item is not returnable
$4.91 | 
17% OFF Phone Price : $5.91
In Stock
Lawn & Garden Equipment Hex Bolt (replaces 01000943, 910-1257) 710-1257
#40

Deck/22" blade/handle diagram

Lawn & garden equipment hex bolt (replaces 01000943, 910-1257)

Part #710-1257

This item is not returnable
$9.85 | 
9% OFF Phone Price : $10.85
In Stock
Lawn Mower Lever 732-0404
#53

Deck/22" blade/handle diagram

Lawn mower lever

Part #732-0404

Replaced by #94832

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Manufacturer substitution
This part replaces 732-0404. Substitute parts can look different from the original.
This item is not returnable
$17.05 | 
10% OFF Phone Price : $19.05
In Stock
Yard Machines Lawn & Garden Equipment Bolt 710-1174
#17

Deck/22" blade/handle diagram

Yard machines lawn & garden equipment bolt

Part #710-1174

This item is not returnable
$10.97 | 
15% OFF Phone Price : $12.97
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.…

Read more
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.…

Read more
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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