MTD
Gas Walk-Behind Mower

Model # 12A-377B062 Official MTD gas lawn mower

Here are the diagrams and repair parts for Official MTD 12A-377B062 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 212 parts  |

Bell Support 736-0524A
Bell support

Part #736-0524A

Replaced by #736-0524B-1

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Manufacturer substitution
This part replaces 736-0524A. Substitute parts can look different from the original.
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$6.58
13% OFF Phone Price : $7.58
In Stock
Ball Bearing 741-0600
#7

Complete transmission/housing diagram

Ball bearing

Part #741-0600

Replaced by #941-0600

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Manufacturer substitution
This part replaces 741-0600. Substitute parts can look different from the original.
BEST SELLER
$28.71
17% OFF Phone Price : $34.71
In Stock
Lawn Tractor Screw, 1/4-20 X 5/8-in (replaces 910-1652) 710-1652
Lawn tractor screw, 1/4-20 x 5/8-in (replaces 910-1652)

Part #710-1652

This item is not returnable
$5.44
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In Stock
Yard Machines Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
Yard machines lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279

This item is not returnable
$6.87
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In Stock
Sears Lawn & Garden Equipment Plastic Plug 721-0325
#25

Complete transmission/housing 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
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
Drive Cable 746-0711A
#128

Deck/bag/wheels(models 380 thru 389) diagram

Drive cable

Part #746-0711A

Replaced by #946-0711B

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Manufacturer substitution
This part replaces 746-0711A. Substitute parts can look different from the original.
$32.85
15% OFF Phone Price : $38.85
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Toro Lawn & Garden Equipment Hex Screw 710-1026
#129

Deck/bag/wheel(models 370 thru 379) diagram

Toro lawn & garden equipment hex screw

Part #710-1026

This item is not returnable
$10.46
16% OFF Phone Price : $12.46
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Lawn & Garden Equipment Hex Bolt (replaces 01000943, 910-1257) 710-1257
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
Sears Lawn & Garden Equipment Cotter Pin (replaces 914-0474) 714-0474
Sears lawn & garden equipment cotter pin (replaces 914-0474)

Part #714-0474

In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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.

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.…

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.…

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.…

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.

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.…

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.…