MTD
Gas Walk-Behind Mower

Model # 12ABW3MJ793 Official MTD gas lawn mower

Here are the diagrams and repair parts for Official MTD 12ABW3MJ793 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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Showing 10 of 15 parts  |

Air Element BS-795066
#NI01

Lawn mower diagram

Air element

Part #BS-795066

Replaced by #795066

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Manufacturer substitution
This part replaces BS-795066. Substitute parts can look different from the original.
BEST SELLER
$14.19
12% OFF Phone Price : $16.19
In Stock
Lawn Mower 28-in Deck Mulching Blade 942-05130
#NI04

Lawn mower diagram

Lawn mower 28-in deck mulching blade

Part #942-05130

Replaced by #742-05130-0637

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Manufacturer substitution
This part replaces 942-05130. Substitute parts can look different from the original.
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$19.87
9% OFF Phone Price : $21.87
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Lawn Mower Drive Control Cable 946-05397
#NI07

Lawn mower diagram

Lawn mower drive control cable

Part #946-05397

$71.43
7% OFF Phone Price : $76.43
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Lawn Mower Blade Engagement Cable 946-05250
#NI06

Lawn mower diagram

Lawn mower blade engagement cable

Part #946-05250

$71.05
7% OFF Phone Price : $76.05
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Trail Shield 731-12261
#NI12

Lawn mower diagram

Trail shield

Part #731-12261

This item is not returnable
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Lawn Mower Wheel, 8 X 2-in 634-05220
#NI13

Lawn mower diagram

Lawn mower wheel, 8 x 2-in

Part #634-05220

This item is not returnable
$42.47
11% OFF Phone Price : $47.47
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Lawn Tractor Deflector Shield 731-10510A
#NI08

Lawn mower diagram

Lawn tractor deflector shield

Part #731-10510A

$45.16
10% OFF Phone Price : $50.16
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Lawn Mower Mandrel And Pulley Assembly 918-07146
#NI05

Lawn mower diagram

Lawn mower mandrel and pulley assembly

Part #918-07146

$148.88
6% OFF Phone Price : $158.88
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Lawn Mower Blade Drive Belt, 1/2 X 60-in (replaces 954-05106) 954-05106A
#NI02

Lawn mower diagram

Lawn mower blade drive belt, 1/2 x 60-in (replaces 954-05106)

Part #954-05106A

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$51.19
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Lawn Mower Ground Drive Belt, 3/8 X 24 5/8-in 954-05090
#NI03

Lawn mower diagram

Lawn mower ground drive belt, 3/8 x 24 5/8-in

Part #954-05090

This item is not returnable

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$37.49
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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.

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