Lawn-Boy
Gas Walk-Behind Mower

Model # 680544 Official Lawn-Boy lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 680544 lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 252 parts  |

Nut 608311
Nut

Part #608311

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

?
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
Lock Washer 146258
#15

Handle group diagram

Lock washer

Part #146258

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

Starter Assembly 684622

#NI

All parts diagram

Starter assembly

Part #684622

Replaced by #684622

?
Manufacturer substitution
This part replaces 684622. Substitute parts can look different from the original.
$240.29
8% OFF MSRP : $260.00
In Stock
Core Plug 609123
#26

Engine group diagram

Core plug

Part #609123

Replaced by #609123

?
Manufacturer substitution
This part replaces 609123. Substitute parts can look different from the original.
This item is not returnable
In Stock
Guide 611834
#54

Drive group diagram

Guide

Part #611834

Replaced by #611834

?
Manufacturer substitution
This part replaces 611834. Substitute parts can look different from the original.
In Stock
Actuator 611509
#43

Engine group diagram

Actuator

Part #611509

Replaced by #611509

?
Manufacturer substitution
This part replaces 611509. Substitute parts can look different from the original.
In Stock
Lever Knob 683663
#25

Handle group diagram

Lever knob

Part #683663

Replaced by #683663

?
Manufacturer substitution
This part replaces 683663. Substitute parts can look different from the original.
In Stock
Worm Wheel 613454
#45

Drive group diagram

Worm wheel

Part #613454

Replaced by #613454

?
Manufacturer substitution
This part replaces 613454. Substitute parts can look different from the original.
In Stock
Washer 700324
#7

Rear grass catcher group diagram

Washer

Part #700324

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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

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

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: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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 blade

How to replace a lawn mower blade

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

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…

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.

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

Tapping into a new feature in 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

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