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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  |
Crankshaft 610747
#21

Engine group diagram

Crankshaft

Part #610747

Replaced by #94-5713

?
Manufacturer substitution
This part replaces 610747. Substitute parts can look different from the original.
$353.65 | 
$12.00 OFF Phone Price : $365.65
In Stock
Oil Seal 605020
#9

Engine group diagram

Oil seal

Part #605020

Replaced by #611396

?
Manufacturer substitution
This part replaces 605020. Substitute parts can look different from the original.
$9.69
In Stock
Nut 602201
#6

Drive group diagram

Nut

Part #602201

Replaced by #602201

?
Manufacturer substitution
This part replaces 602201. Substitute parts can look different from the original.
This item is not returnable
$4.49
In Stock
Bolt 610646
Bolt

Part #610646

Replaced by #610646

?
Manufacturer substitution
This part replaces 610646. Substitute parts can look different from the original.
$12.54
In Stock
Gasket 607213
#73

Engine group diagram

Gasket

Part #607213

Replaced by #607213

?
Manufacturer substitution
This part replaces 607213. Substitute parts can look different from the original.
This item is not returnable
$3.86
In Stock
Spring 609229
#46

Engine group diagram

Spring

Part #609229

Replaced by #609229

?
Manufacturer substitution
This part replaces 609229. Substitute parts can look different from the original.
$8.80
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
Retainer 610383
#69

Engine group diagram

Retainer

Part #610383

Replaced by #610383

?
Manufacturer substitution
This part replaces 610383. Substitute parts can look different from the original.
$15.49
In Stock
V-belt 610040
#34

Drive group diagram

V-belt

Part #610040

Replaced by #610040

?
Manufacturer substitution
This part replaces 610040. Substitute parts can look different from the original.
$45.38
In Stock
Pulley 609976
#33

Drive group diagram

Pulley

Part #609976

Replaced by #609976

?
Manufacturer substitution
This part replaces 609976. Substitute parts can look different from the original.
$131.30
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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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
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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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Repair difficulty
Time required
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