Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Lawn-Boy
Gas Snowblower

Model # 320 (28220-8900001 & UP) Official Lawn-Boy snow thrower

Here are the diagrams and repair parts for Official Lawn-Boy 320-28220-8900001-UP snow thrower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

  View engine

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 247 parts  |
Nut 32149-1
#40

Upper shroud asm - cont. diagram

Nut

Part #32149-1

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

Lock Nut 3296-29
Lock nut

Part #3296-29

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

Primer 66-7460
#12

Upper shroud assembly diagram

Primer

Part #66-7460

Replaced by #66-7460

?
Manufacturer substitution
This part replaces 66-7460. Substitute parts can look different from the original.
This item is not returnable
$8.49
In Stock
Brake Spring 71-5470
#14

Rotor housing assembly diagram

Brake spring

Part #71-5470

This item is not returnable
$4.94
In Stock
Toro Screw 12-3270
#25

Rotor housing assembly diagram

Toro screw

Part #12-3270

This item is not returnable
$3.87
In Stock
Spring Cover 71-5530
#3

Handle assembly diagram

Spring cover

Part #71-5530

$8.83
In Stock
Stop 61-4670
#2

Starter motor asm 27222/electric diagram

Stop

Part #61-4670

Replaced by #61-4670

?
Manufacturer substitution
This part replaces 61-4670. Substitute parts can look different from the original.
$23.00
In Stock
Push Nut 3290-486
#6

Handle assembly diagram

Push nut

Part #3290-486

Replaced by #3290-486

?
Manufacturer substitution
This part replaces 3290-486. Substitute parts can look different from the original.
This item is not returnable
$2.20
In Stock
Clutch Cable 55-9322
#7

Handle assembly diagram

Clutch cable

Part #55-9322

Replaced by #55-9322

?
Manufacturer substitution
This part replaces 55-9322. Substitute parts can look different from the original.
$16.46
In Stock
Screw 46-8092
#29

Upper shroud asm - cont. diagram

Screw

Part #46-8092

Replaced by #137-3101

?
Manufacturer substitution
This part replaces 46-8092. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

View all

How do I tune up my snowblower?

Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b...

Read more

Why won't my snowblower throw snow far enough?

Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems...

Read more

Why does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel...

Read more

What should I do about a damaged snowblower tire?

Main causes: punctured tire, damaged rim...

Read more

Why does my snowblower engine run rough?

Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets...

Read more

Why won't my snowblower start?

Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect...

Read more

Why doesn't my snowblower self propel?

Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground...

Read more

Why won't my snowblower chute turn?

Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly...

Read more

Why won't my snowblower clear snow well?

Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, ...

Read more

Repair guides for gas snowblowers

These step-by-step repair guides will help you safely fix what’s broken on your snowblower.

View all
How to adjust snowblower engine valve lash

How to adjust snowblower engine valve lash

Adjust the engine valve lash on your snowblower to keep the engine starting and running smoothly....

Read more
Repair difficulty
Time required
15 minutes or less
How to adjust snowblower skid shoes

How to adjust snowblower skid shoes

To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high....

Read more
Repair difficulty
Time required
15 minutes or less
How to replace a snowblower shave plate

How to replace a snowblower shave plate

Follow the 7 easy steps in this repair guide/video to replace a worn out shave plate on your snowblower....

Read more
Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your snowblowers

Use the advice and tips in these articles and videos to get the most out of your snowblower.

View all
How to make your snowblower last longer

How to make your snowblower last longer

Learn the steps to take to adjust and maintain your snowblower so it lasts longer....

Read more
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....

Read more
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....

Read more

Parts & More