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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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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ALL PARTS
Showing 10 of 252 parts  |
Screw 145498
#18

Handle group diagram

Screw

Part #145498

Replaced by #614697

?
Manufacturer substitution
This part replaces 145498. Substitute parts can look different from the original.
This item is not returnable
$5.29
In Stock
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

$31.17 | 
16% OFF Phone Price : $37.17
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
Clip Rope 612824
#4

Starter group diagram

Clip rope

Part #612824

Replaced by #612824

?
Manufacturer substitution
This part replaces 612824. Substitute parts can look different from the original.
This item is not returnable
$7.11
In Stock
Brace Assembly 683581
#58

Engine group diagram

Brace assembly

Part #683581

Replaced by #683581

?
Manufacturer substitution
This part replaces 683581. Substitute parts can look different from the original.
$29.80
In Stock
Throttle Kit 684286

#NI

All parts diagram

Throttle kit

Part #684286

Replaced by #684286

?
Manufacturer substitution
This part replaces 684286. Substitute parts can look different from the original.
$91.51
In Stock
Retaining Ring 303712
#21

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
$5.57
In Stock
Toe Bar 608175
#34

Housing and shroud group diagram

Toe bar

Part #608175

Replaced by #608175

?
Manufacturer substitution
This part replaces 608175. Substitute parts can look different from the original.
$113.12
In Stock
Control Lever 683478
#5

Handle group diagram

Control lever

Part #683478

Replaced by #683478

?
Manufacturer substitution
This part replaces 683478. Substitute parts can look different from the original.
$188.24
In Stock
C.d.ignition 683215
#33

Engine group diagram

C.d.ignition

Part #683215

Replaced by #100-2948

?
Manufacturer substitution
This part replaces 683215. Substitute parts can look different from the original.
$128.89 | 
9% OFF Phone Price : $140.89
In Stock

Symptoms for gas walk-behind mowers

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

View all

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…

Read more

Why won't my lawn mower move?

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

Read more

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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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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

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.…

Read more
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.…

Read more
Repair difficulty
Time required
 15 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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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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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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