Lawn-Boy
Gas Snowblower

Model #320 (28222-7900001 & UP) Lawn-Boy snow thrower

Here are the diagrams and repair parts for Lawn-Boy 320-28222-7900001-UP snow thrower, as well as links to manuals and error code tables, if available.


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Showing 10 of 249 parts

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Lock Nut

#31

Rotor housing assembly Diagram

Lock nut

Part #32128-10

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

Key

#11

Engine and frame Diagram

Key

Part #3257-3

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

Idler Pulley

#16

Rotor housing assembly Diagram

Idler pulley

Part #71-5260

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

Chute Support

#33

Upper shroud assembly (continued) Diagram

Chute support

Part #55-8921

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

Stop Nut

#4

Engine and frame Diagram

Stop nut

Part #3296-16

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

Handle Tube

#9

Handle assembly Diagram

Handle tube

Part #71-5370

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

Primer

#12

Upper shroud assembly (continued) Diagram

Primer

Part #66-7460

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

Drive V-Belt

#21

Engine and frame Diagram

Drive v-belt

Part #71-5381

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

Screw

#12

Rotor housing assembly Diagram

Screw

Part #32105-15

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

Flange Bearing

#29

Rotor housing assembly Diagram

Flange bearing

Part #38-8620

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

Showing 10 of 249 parts

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

Main causes: punctured tire, damaged rim
Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets
Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the belts
Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground, engine problems
Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems
Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, auger cable problems
Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect valve lash
Main causes: dirty carburetor, stale fuel
Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly

Repair guides for gas snowblowers

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

December 1, 2015
By Lyle Weischwill
How to replace a snowblower spark plug

You need a spark to fire up the engine of your snowblower, and that spark comes from a spark plug. You can replace one in minutes.

Repair difficulty
Time required
 15 minutes or less
December 1, 2015
By Lyle Weischwill
How to replace a snowblower fuel line

Replace the fuel line on your snowblower if it's cracked or damaged.

Repair difficulty
Time required
 30 minutes or less
January 20, 2015
By Lyle Weischwill
How to replace a snowblower shear pin

The shear pin breaks if you hit hard-packed snow, to protect the engine from damage. Your snowblower auger won't rotate until you fix it. You can replace it in about 10 minutes.

Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas snowblowers

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

November 1, 2014

How to adjust a snowblower auger control video

By Sears PartsDirect staff

This video shows how to adjust a snowblower's auger control.

November 1, 2014

How to adjust a snowblower drive control video

By Sears PartsDirect staff

Learn how to tighten a snowblower drive control if the drive slips or doesn't engage, and how to loosen it if the snowblower creeps when you disengage the drive.

November 1, 2014

How to adjust a snowblower chute control rod video

By Sears PartsDirect staff

See how to replace the chute control rod on a snowblower.