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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8602 Walk-Behind Mowers
Screw 608850
#55

Engine group diagram

Screw

Part #608850

Replaced by #608850

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Manufacturer substitution
This part replaces 608850. Substitute parts can look different from the original.
This item is not returnable
In Stock
Air Vane Shaft 610831
#52

Engine group diagram

Air vane shaft

Part #610831

Replaced by #610831

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Manufacturer substitution
This part replaces 610831. Substitute parts can look different from the original.
In Stock
Pin 610016
Pin

Part #610016

Replaced by #610016

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

Drive group diagram

Idler pulley

Part #607978

Replaced by #607978

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Manufacturer substitution
This part replaces 607978. Substitute parts can look different from the original.
In Stock
Retaining Ring 607676
#25

Drive group diagram

Retaining ring

Part #607676

Replaced by #607676

?
Manufacturer substitution
This part replaces 607676. Substitute parts can look different from the original.
In Stock
Spring 604257
#42

Engine group diagram

Spring

Part #604257

Replaced by #604257

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Manufacturer substitution
This part replaces 604257. Substitute parts can look different from the original.
In Stock
Retaining Ring 303712
#20

Engine group diagram

Retaining ring

Part #303712

Replaced by #303712

?
Manufacturer substitution
This part replaces 303712. Substitute parts can look different from the original.
This item is not returnable
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
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.
In Stock
Wrist Pin 606608
#19

Engine group diagram

Wrist pin

Part #606608

Replaced by #94-5774

?
Manufacturer substitution
This part replaces 606608. Substitute parts can look different from the original.
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: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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

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

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 spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 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

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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