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Lawn-Boy
Gas Walk-Behind Mower

Model # 680541 Official Lawn-Boy walk-behind lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 680541 walk-behind 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 244 parts  |
Nut 608311
Nut

Part #608311

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

Lock Washer 146258
#15

Handle group diagram

Lock washer

Part #146258

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

Belt, 21-in 683682
#22

Housing and shroud group diagram

Belt, 21-in

Part #683682

Replaced by #612543-03

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Manufacturer substitution
This part replaces 683682. Substitute parts can look different from the original.

Get free shipping with Automatic Reorder

$38.29 | 
20% OFF MSRP : $48.00
In Stock
Gasket 609420
Gasket

Part #609420

Replaced by #93-1233

?
Manufacturer substitution
This part replaces 609420. Substitute parts can look different from the original.
This item is not returnable
$3.03
In Stock
Bolt 603441
#29

Housing and shroud group diagram

Bolt

Part #603441

Replaced by #603441

?
Manufacturer substitution
This part replaces 603441. Substitute parts can look different from the original.
$8.43
In Stock
Collar Plate 677525
#21

Housing and shroud group diagram

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
Screen 612974
#16

Carburetor group diagram

Screen

Part #612974

Replaced by #612974

?
Manufacturer substitution
This part replaces 612974. Substitute parts can look different from the original.
$12.03
In Stock
Column 611541
#4

Handle group diagram

Column

Part #611541

Replaced by #611541

?
Manufacturer substitution
This part replaces 611541. Substitute parts can look different from the original.
$22.31
In Stock
Flywheel 683580
#5

Engine group diagram

Flywheel

Part #683580

Replaced by #683580

?
Manufacturer substitution
This part replaces 683580. Substitute parts can look different from the original.
$393.75
In Stock
Screw 609947
#6

Engine group diagram

Screw

Part #609947

Replaced by #609947

?
Manufacturer substitution
This part replaces 609947. Substitute parts can look different from the original.
$20.89
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 run rough?

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

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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 vibrate a lot?

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

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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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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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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 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…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Read more
Repair difficulty
Time required
 45 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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Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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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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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.…

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