Western Tool
Gas Walk-Behind Mower

Model # 12860000 Official Western Tool 22" 4-hp self-propelled top bagging rotary mower

Here are the diagrams and repair parts for Official Western Tool 12860000 22" 4-hp self-propelled top bagging rotary 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 159 parts  |

Wing Nut 45576
#21

Throttle control assembly diagram

Wing nut

Part #45576

The manufacturer no longer makes this part, and there's no substitute part

Walk-behind Lawn Mower Engine 14442
#18

Engine and mower deck assembly diagram

Walk-behind lawn mower engine

Part #14442

The manufacturer no longer makes this part, and there's no substitute part

Lock Nut 9424215
#7

Throttle control assembly diagram

Lock nut

Part #9424215

The manufacturer no longer makes this part, and there's no substitute part

Knob 20252
#56

Engine and mower deck assembly diagram

Knob

Part #20252

The manufacturer no longer makes this part, and there's no substitute part

Pulley 48306
#34

Throttle control assembly diagram

Pulley

Part #48306

The manufacturer no longer makes this part, and there's no substitute part

Washer 120392
#6

Engine and mower deck assembly diagram

Washer

Part #120392

The manufacturer no longer makes this part, and there's no substitute part

Cap Screw 122052
#28

Throttle control assembly diagram

Cap screw

Part #122052

The manufacturer no longer makes this part, and there's no substitute part

Lock Screw 35291
#9

Throttle control assembly diagram

Lock screw

Part #35291

The manufacturer no longer makes this part, and there's no substitute part

Lock Nut 9413447
#29

Throttle control assembly diagram

Lock nut

Part #9413447

The manufacturer no longer makes this part, and there's no substitute part

Hex Nut 271166
Hex nut

Part #271166

The manufacturer no longer makes this part, and there's no substitute part

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.

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

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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

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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