Lawn-Boy
Gas Walk-Behind Mower

Model #4502 Lawn-Boy lawn mower

Here are the diagrams and repair parts for Lawn-Boy 4502 lawn mower, as well as links to manuals and error code tables, if available.


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Showing 10 of 189 parts

Chute Deflector

#49

Deck, shroud and handle group Diagram

Chute deflector

Part #681880
?
Manufacturer substitution
This part replaces 681880. Substitute parts can look different from the original.
This part replaces 681880
$122.73

In Stock

Ignition Module

#33

Engine group Diagram

Ignition module

Part #100-2949
?
Manufacturer substitution
This part replaces 682340. Substitute parts can look different from the original.
This part replaces 682340
$79.93

In Stock

Washer

#25

Deck, shroud and handle group Diagram

Washer

Part #605255
?
Manufacturer substitution
This part replaces 605255. Substitute parts can look different from the original.
This part replaces 605255
This item is not returnable
$2.27

In Stock

Screw

#31

Engine group Diagram

Screw

Part #32105-12
?
Manufacturer substitution
This part replaces 607526. Substitute parts can look different from the original.
This part replaces 607526
This item is not returnable
$2.36

In Stock

Nut

#8

Deck, shroud and handle group Diagram

Nut

Part #608311

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

Adjustment Bracket

#30

Deck, shroud and handle group Diagram

Adjustment bracket

Part #608833-03
?
Manufacturer substitution
This part replaces 608833. Substitute parts can look different from the original.
This part replaces 608833
$12.43

In Stock

Hex Screw

#25

Engine group Diagram

Hex screw

Part #609918
?
Manufacturer substitution
This part replaces 609918. Substitute parts can look different from the original.
This part replaces 609918
This item is not returnable
$2.78

In Stock

Support Crankshaft

#19

Deck, shroud and handle group Diagram

Support crankshaft

Part #609980
?
Manufacturer substitution
This part replaces 609980. Substitute parts can look different from the original.
This part replaces 609980
This item is not returnable
$5.07

In Stock

Muffler Plate

#5

Deck, shroud and handle group Diagram

Muffler plate

Part #609989
?
Manufacturer substitution
This part replaces 609989. Substitute parts can look different from the original.
This part replaces 609989
$81.10

In Stock

Tubing

#53

Engine group Diagram

Tubing

Part #609640
?
Manufacturer substitution
This part replaces 609640. Substitute parts can look different from the original.
This part replaces 609640
$7.79

In Stock

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.