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Kubota
Gas Walk-Behind Mower

Model # W5021-SC Official Kubota lawn mower

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

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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

Model diagram and schematic

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ALL PARTS
Showing 10 of 400 parts  |
Knob 12681-6167-0
#130

Recoil starter diagram

Knob

Part #12681-6167-0

Replaced by #31-904

?
Manufacturer substitution
This part replaces 12681-6167-0. Substitute parts can look different from the original.
This item is not returnable
$3.80
In Stock
Parts List 97898-40410

#NI

All parts diagram

Parts list

Part #97898-40410

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

Bolt 01053-5052-0
#350

Transmission diagram

Bolt

Part #01053-5052-0

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

O-ring 04811-0018-0
#40

Oil filler pipe diagram

O-ring

Part #04811-0018-0

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

Discharge Guard 65661-2142-0
#40A

Joint cover - discharge guard diagram

Discharge guard

Part #65661-2142-0

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

Fan Cover 65601-2114-4
#40

Cutter housing diagram

Fan cover

Part #65601-2114-4

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

Push Rod 12681-1511-0
#70

Rocker arm - camshaft diagram

Push rod

Part #12681-1511-0

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

Lever 65661-4211-0
#10

Cable - lever diagram

Lever

Part #65661-4211-0

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

Spring 65661-4223-0
#110

Cable - lever diagram

Spring

Part #65661-4223-0

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

Wheel Cap 65601-3128-0
Wheel cap

Part #65601-3128-0

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.

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why does my lawn mower cut unevenly?

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

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Why does my lawn mower run rough?

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

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Why won't my lawn mower move?

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

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

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

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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.

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How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

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.…

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Repair difficulty
Time required
 15 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

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.…

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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.…

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

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

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