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Lawn-Boy
Gas Walk-Behind Mower

Model # 10201-3900001 AND UP Official Lawn-Boy lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 10201-3900001-AND-UP 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 213 parts  |
Rope Guide 92-1021
#2

Handle assembly diagram

Rope guide

Part #92-1021

Replaced by #86-9671

?
Manufacturer substitution
This part replaces 92-1021. Substitute parts can look different from the original.
This item is not returnable
$5.74 | 
15% OFF Phone Price : $6.74
In Stock
Screw Engine 92-1624
#13

2 cycle engine, fuel tank & blade assembly diagram

Screw engine

Part #92-1624

Replaced by #95-1726

?
Manufacturer substitution
This part replaces 92-1624. Substitute parts can look different from the original.
This item is not returnable
$3.74
In Stock
Gas Line 612782
#11

2 cycle engine, fuel tank & blade assembly diagram

Gas line

Part #612782

Replaced by #612782

?
Manufacturer substitution
This part replaces 612782. Substitute parts can look different from the original.
This item is not returnable
$12.43
In Stock
Cap Screw 611393
#13

2 cycle engine assembly diagram

Cap screw

Part #611393

Replaced by #611393

?
Manufacturer substitution
This part replaces 611393. Substitute parts can look different from the original.
$35.44
In Stock
High Tension Lead 684179
#3

2 cycle engine assembly diagram

High tension lead

Part #684179

Replaced by #684179

?
Manufacturer substitution
This part replaces 684179. Substitute parts can look different from the original.
$41.31
In Stock
Spring Arm 92-1005
#14

Deck & wheel assembly (hand push) diagram

Spring arm

Part #92-1005

Replaced by #92-1005

?
Manufacturer substitution
This part replaces 92-1005. Substitute parts can look different from the original.
$36.24
In Stock
Hex Screw 146209
Hex screw

Part #146209

Replaced by #146209

?
Manufacturer substitution
This part replaces 146209. Substitute parts can look different from the original.
This item is not returnable
$2.85 | 
26% OFF Phone Price : $3.85
In Stock
Fuel Cover 614271
#7C

2 cycle engine, fuel tank & blade assembly diagram

Fuel cover

Part #614271

Replaced by #614271

?
Manufacturer substitution
This part replaces 614271. Substitute parts can look different from the original.
$9.00
In Stock
Bail Sp Con 92-1001
#7

Handle assembly diagram

Bail sp con

Part #92-1001

Replaced by #92-1001-03

?
Manufacturer substitution
This part replaces 92-1001. Substitute parts can look different from the original.
$75.80
In Stock
Brake Cable 92-1036
#17

Handle assembly diagram

Brake cable

Part #92-1036

Replaced by #92-1036

?
Manufacturer substitution
This part replaces 92-1036. Substitute parts can look different from the original.
$93.36
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…

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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

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

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