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
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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.
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$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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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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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
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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
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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: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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

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

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…

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

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 replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

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

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 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.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

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