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 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

    Showing 10 of 159 parts

    Wing Nut#21

    Throttle control assembly Diagram

    Wing nut

    Part #45576

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

    Pulley#34

    Throttle control assembly Diagram

    Pulley

    Part #48306

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

    Screw#115

    Engine and mower deck assembly Diagram

    Screw

    Part #48148

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

    Truarc Ring#110

    Engine and mower deck assembly Diagram

    Truarc ring

    Part #35703

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

    Lock Nut#29

    Throttle control assembly Diagram

    Lock nut

    Part #9413447

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

    Screw Rd Hea#69

    Engine and mower deck assembly Diagram

    Screw rd hea

    Part #35258

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

    Walk-Behind Lawn Mower Engine#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

    Screw#67

    Engine and mower deck assembly Diagram

    Screw

    Part #122181

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

    Washer#6

    Engine and mower deck assembly Diagram

    Washer

    Part #120392

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

    Lock Nut#7

    Throttle control assembly Diagram

    Lock nut

    Part #9424215

    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: 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: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
    Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
    Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
    Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

    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.

    March 1, 2016
    By Lyle Weischwill
    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 ignition coil on an OHV engine

    Replace the ignition coil if it isn't sending electric current to the spark plug when you pull the recoil starter rope.

    Repair difficulty
    Time required
     30 minutes or less
    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 replace this tiny but essential part.

    Repair difficulty
    Time required
     45 minutes or less

    Articles and videos common to all 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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    Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.

    August 5, 2022

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

    By Lyle Weischwill

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

    June 29, 2022

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