Kubota
Gas Walk-Behind Mower

Model #W5021-SC Kubota lawn mower

Here are the diagrams and repair parts for Kubota W5021-SC lawn mower, as well as links to manuals and error code tables, if available.

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    Showing 10 of 400 parts

    Woodruff Key

    #70

    Bonnet - spark plug Diagram

    Woodruff key

    Part #12331-9523-0

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

    Lawn & Garden Equipment Recoil Starter Handle

    #130

    Recoil starter Diagram

    Lawn & garden equipment recoil starter handle

    Part #31-904
    ?
    Manufacturer substitution
    This part replaces 12681-6167-0. Substitute parts can look different from the original.
    This part replaces 12681-6167-0
    This item is not returnable
    $4.57

    In Stock

    Washer

    #100

    Front wheel (8x2.0) Diagram

    Washer

    Part #04013-5008-0

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

    Seal

    #290

    Transmission Diagram

    Seal

    Part #09500-1524-7

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

    Gear

    #150

    Piston - crankshaft Diagram

    Gear

    Part #12191-2712-0

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

    Idle Wheel

    #10

    Front wheel (8x2.0) Diagram

    Idle wheel

    Part #65601-3110-2

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

    Tire, 8 x 20-in

    #20

    Front wheel (8x2.0) Diagram

    Tire, 8 x 20-in

    Part #65601-3118-2

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

    Blade Brake

    #10

    Blade brake clutch Diagram

    Blade brake

    Part #65601-3510-3

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

    Spring

    #60

    Cable - lever Diagram

    Spring

    Part #65661-4217-0

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

    Lawn Mower Label

    #60

    Grass catcher bag - label Diagram

    Lawn mower label

    Part #65661-5622-0

    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: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
    Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
    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: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
    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.

    How to replace a lawn mower flywheel key on an OHV engine

    The flywheel key couples the flywheel to the engine crankshaft. Replace the flywheel key if it's broken.

    Repair difficulty
    Time required
     60 minutes or less
    April 1, 2013
    By Lyle Weischwill
    How to replace a lawn mower wheel

    Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.

    Repair difficulty
    Time required
     15 minutes or less
    April 1, 2013
    By Lyle Weischwill
    How to replace a lawn mower safety switch

    The safety switch stops the engine when you release the lever on the handle. This repair guide explains how to replace it if it's not working correctly.

    Repair difficulty
    Time required
     30 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.

    October 1, 2019

    Types of walk-behind mower blades video

    By Sears PartsDirect staff

    Learn about the different kinds of mower blades and how to maintain them.