Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Western Auto
Gas Walk-Behind Mower

Model # 5135A79 Official Western Auto rotary lawn mower

Here are the diagrams and repair parts for Official Western Auto 5135A79 rotary lawn mower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 60 parts  |
Western Auto Discharge Guard 133188X479
#74

Replacement parts diagram

Western auto discharge guard

Part #133188X479

This item is not returnable
$4.64
In Stock
Lawn Mower Bolt 74350424
#14

Wheel assembly diagram

Lawn mower bolt

Part #74350424

This item is not returnable
$2.91
In Stock
Western Auto Drive Control 146392
#12

Replacement parts diagram

Western auto drive control

Part #146392

$16.08
In Stock
Side Baffle 700363X419
#20

Replacement parts diagram

Side baffle

Part #700363X419

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

Plate 133169X479
#22

Replacement parts diagram

Plate

Part #133169X479

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

Drive Belt 111924X
#36

Wheel assembly diagram

Drive belt

Part #111924X

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

Decal 85463
#46

Replacement parts diagram

Decal

Part #85463

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

Drive Pawl 851980
#4

Wheel assembly diagram

Drive pawl

Part #851980

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

Cable Guide 145669
#78

Replacement parts diagram

Cable guide

Part #145669

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

Rear Wheel Adjusting Bracket 750085X007
#29

Replacement parts diagram

Rear wheel adjusting bracket

Part #750085X007

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.

View all

Why does my lawn mower vibrate a lot?

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

Read more

Why does my lawn mower cut unevenly?

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

Read more

Why does my lawn mower run rough?

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

Read more

Why won't my lawn mower move?

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

Read more

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…

Read more

Why does my lawn mower stall?

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

Read more

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.

View all
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.…

Read more
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.

View all
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.…

Read more
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.…

Read more
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.…

Read more

Parts & More