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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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  • In the search box below, enter all or part of the part number or the part’s name.

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 252 parts  |
Adapter A'y 684166
#10

Rear grass catcher group diagram

Adapter a'y

Part #684166

Replaced by #684727-03

?
Manufacturer substitution
This part replaces 684166. Substitute parts can look different from the original.
$179.22
In Stock
Nut 130743
#3

Engine group diagram

Nut

Part #130743

Replaced by #130743

?
Manufacturer substitution
This part replaces 130743. Substitute parts can look different from the original.
This item is not returnable
$5.29
In Stock
Handle 614241
#17

Handle group diagram

Handle

Part #614241

Replaced by #614241

?
Manufacturer substitution
This part replaces 614241. Substitute parts can look different from the original.
$205.33
In Stock
Idler Pulley 607978
#5

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
Washer 611878
#32

Drive group diagram

Washer

Part #611878

Replaced by #611878

?
Manufacturer substitution
This part replaces 611878. Substitute parts can look different from the original.
$25.82
In Stock
Wrist Pin 606608
#20

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.
$18.71
In Stock
Screw 610404
Screw

Part #610404

Replaced by #146209

?
Manufacturer substitution
This part replaces 610404. Substitute parts can look different from the original.
This item is not returnable
$2.85 | 
26% OFF Phone Price : $3.85
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.
$32.82
In Stock
Connecting Rod 682970
#14

Engine group diagram

Connecting rod

Part #682970

Replaced by #92-4921

?
Manufacturer substitution
This part replaces 682970. Substitute parts can look different from the original.
$255.18
In Stock
Crankshaft S 609786
#19

Housing and shroud group diagram

Crankshaft s

Part #609786

Replaced by #609786

?
Manufacturer substitution
This part replaces 609786. Substitute parts can look different from the original.
$30.29
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…

Read more

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.

View all
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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How to enjoy all the online benefits we offer on our Sears PartsDirect website

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.…

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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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