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Lawn-Boy
Gas Walk-Behind Mower

Model # 8602 Official Lawn-Boy lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 8602 lawn mower, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 189 parts  |
Pin 610016
Pin

Part #610016

Replaced by #610016

?
Manufacturer substitution
This part replaces 610016. Substitute parts can look different from the original.
$91.60
In Stock
Idler Pulley 607978
#58

Drive group diagram

Idler pulley

Part #607978

Replaced by #607978

?
Manufacturer substitution
This part replaces 607978. Substitute parts can look different from the original.
$45.80
In Stock
Cover And De 681891
#1

Drive group diagram

Cover and de

Part #681891

Replaced by #681891

?
Manufacturer substitution
This part replaces 681891. Substitute parts can look different from the original.
$194.16
In Stock
Pulley 610035
#9

Drive group diagram

Pulley

Part #610035

Replaced by #610035

?
Manufacturer substitution
This part replaces 610035. Substitute parts can look different from the original.
$213.75
In Stock
Grease Plug 602926
#15

Drive group diagram

Grease plug

Part #602926

Replaced by #602926

?
Manufacturer substitution
This part replaces 602926. Substitute parts can look different from the original.
$24.03
In Stock
Collar Plate 677525
Collar plate

Part #677525

Replaced by #677525

?
Manufacturer substitution
This part replaces 677525. Substitute parts can look different from the original.
$30.89
In Stock
Air Vane Shaft 610831
#52

Engine group diagram

Air vane shaft

Part #610831

Replaced by #610831

?
Manufacturer substitution
This part replaces 610831. Substitute parts can look different from the original.
$24.33
In Stock
Needle Seal 681741
#59

Engine group diagram

Needle seal

Part #681741

Replaced by #92-9697

?
Manufacturer substitution
This part replaces 681741. Substitute parts can look different from the original.
$23.47
In Stock
Washer 605058
Washer

Part #605058

Replaced by #605058

?
Manufacturer substitution
This part replaces 605058. Substitute parts can look different from the original.
$9.77
In Stock
Adjusting Collar 610834
#64

Engine group diagram

Adjusting collar

Part #610834

Replaced by #610834

?
Manufacturer substitution
This part replaces 610834. Substitute parts can look different from the original.
This item is not returnable
$6.74
In Stock

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

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

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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.…

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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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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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Types of walk-behind mower blades video

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