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Lawn-Boy
Gas Snowblower

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

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 250 parts  |
Nut 32149-1
#40

Upper shroud assembly (continued) 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

Screw 12-3270
#25

Rotor housing assembly diagram

Screw

Part #12-3270

This item is not returnable
$3.87
In Stock
Brkt-supt Si 71-5310
#40

Rotor housing assembly diagram

Brkt-supt si

Part #71-5310

Replaced by #71-5310

?
Manufacturer substitution
This part replaces 71-5310. Substitute parts can look different from the original.
$12.40
In Stock
Service Chute 94-2790
#2

Upper shroud assembly (continued) diagram

Service chute

Part #94-2790

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

Push Nut 3290-486
#3

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
$2.16
In Stock
Screw 84-1971
#6

Rotor assembly diagram

Screw

Part #84-1971

Replaced by #136-7182

?
Manufacturer substitution
This part replaces 84-1971. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Idler Brake 71-5160
#15

Rotor housing assembly diagram

Idler brake

Part #71-5160

Replaced by #71-5160

?
Manufacturer substitution
This part replaces 71-5160. Substitute parts can look different from the original.
$33.24
In Stock
Cap Screw 321-39
#45

Rotor housing assembly diagram

Cap screw

Part #321-39

Replaced by #321-39

?
Manufacturer substitution
This part replaces 321-39. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Upper Housing 70-7810
#5

Starter motor 28222 (electric) diagram

Upper housing

Part #70-7810

Replaced by #100-3443

?
Manufacturer substitution
This part replaces 70-7810. Substitute parts can look different from the original.
$30.91
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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Why doesn't my snowblower auger turn?

Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case…

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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, …

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Why won't my snowblower start?

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

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What should I do about a damaged snowblower tire?

Main causes: punctured tire, damaged rim…

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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…

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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…

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Why does my snowblower engine run rough?

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

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Why does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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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…

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How to replace a snowblower fuel filter

Replace the fuel filter on your snowblower if it's clogged or damaged.…

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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.…

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 15 minutes or less
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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.

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How to make your snowblower last longer

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

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