Gas Walk-Behind Mower

Model # 12A-459S762 Official MTD gas lawn mower

Here are the diagrams and repair parts for Official MTD 12A-459S762 gas lawn mower, as well as links to manuals and error code tables, if available.

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12A-459S762 Walk-Behind Mowers
Blade-21" Mu 742-0741
#46

Mower diagram

Blade-21" mu

Part #742-0741

Replaced by #942-0741A

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Manufacturer substitution
This part replaces 742-0741. Substitute parts can look different from the original.
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$27.71
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Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#72

Mower diagram

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

Part #710-0599

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This item is not returnable
$4.91
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Lawn Tractor Push Cap 726-0201
#28

Handle/catcher diagram

Lawn tractor push cap

Part #726-0201

This item is not returnable
$10.56
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Yard Machines Lawn & Garden Equipment Cupped Washer 736-0270
#9

Handle/catcher diagram

Yard machines lawn & garden equipment cupped washer

Part #736-0270

This item is not returnable
$5.10
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Cable Tie 726-0240
#24

Mower diagram

Cable tie

Part #726-0240

Replaced by #726-0178

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Manufacturer substitution
This part replaces 726-0240. Substitute parts can look different from the original.
This item is not returnable
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Yard Machines Lawn Mower Throttle Control Housing 746-0883
#10

Mower diagram

Yard machines lawn mower throttle control housing

Part #746-0883

This item is not returnable
$21.96
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Kill Cable 746-0843
#23

Mower diagram

Kill cable

Part #746-0843

Replaced by #946-0671A

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Manufacturer substitution
This part replaces 746-0843. Substitute parts can look different from the original.
$18.37
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Lawn Tractor Hex Nut 712-0271
#30

Mower diagram

Lawn tractor hex nut

Part #712-0271

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$6.66
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Yard-man Lawn & Garden Equipment Hex Screw 710-1256
Yard-man lawn & garden equipment hex screw

Part #710-1256

This item is not returnable
In Stock
Lawn Mower Drive Pinion Gear 717-1762
#44

Drive diagram

Lawn mower drive pinion gear

Part #717-1762

This item is not returnable
$21.24
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Symptoms for gas walk-behind mowers

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

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

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

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

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

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 drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 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

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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

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