Gas Walk-Behind Mower

Model # 12A-909J063 Official Troybilt lawn mower

Here are the diagrams and repair parts for Official Troybilt 12A-909J063 lawn mower, as well as links to manuals and error code tables, if available.

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12A-909J063 Walk-Behind Mowers
Screw-hwh GW-9552
#48

Mower deck/engine/bag diagram

Screw-hwh

Part #GW-9552

Replaced by #710-0599

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Manufacturer substitution
This part replaces GW-9552. Substitute parts can look different from the original.
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This item is not returnable
$4.91
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Cable Tie 1763682
#10

Handle diagram

Cable tie

Part #1763682

Replaced by #726-0178

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Manufacturer substitution
This part replaces 1763682. Substitute parts can look different from the original.
This item is not returnable
In Stock
Scr-hflk 1/4 1917088
#15

Mower deck/engine/bag diagram

Scr-hflk 1/4

Part #1917088

Replaced by #710-1206

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Manufacturer substitution
This part replaces 1917088. Substitute parts can look different from the original.
This item is not returnable
$10.87
16% OFF Phone Price : $12.87
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Cap 1727342
#8

Mower deck/engine/bag diagram

Cap

Part #1727342

Replaced by #726-0135

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Manufacturer substitution
This part replaces 1727342. Substitute parts can look different from the original.
This item is not returnable
$10.46
16% OFF Phone Price : $12.46
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Snap Ring GW-9516
#41

Mower deck/engine/bag diagram

Snap ring

Part #GW-9516

This item is not returnable
In Stock
Ace Flange Screw 1754128
#9

Mower deck/engine/bag diagram

Ace flange screw

Part #1754128

This item is not returnable
In Stock
Yard Machines Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
#17

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
Lawn & Garden Equipment Belleville Washer GW-9928
#28

Mower deck/engine/bag diagram

Lawn & garden equipment belleville washer

Part #GW-9928

In Stock
Axle Bearing 1917014
#37

Mower deck/engine/bag diagram

Axle bearing

Part #1917014

This item is not returnable
In Stock
Ryobi Grip 720-0313
#53

Mower deck/engine/bag diagram

Ryobi grip

Part #720-0313

In Stock

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

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.…

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.…