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  |

Lock Nut 3296-29
Lock nut

Part #3296-29

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

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

Screw 12-3270
#25

Rotor housing assembly diagram

Screw

Part #12-3270

This item is not returnable
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

Sideplt Rh 71-4920
#38

Rotor housing assembly diagram

Sideplt rh

Part #71-4920

Replaced by #71-4920-03

?
Manufacturer substitution
This part replaces 71-4920. Substitute parts can look different from the original.
In Stock
Starter Motor 77-0402
Starter motor

Part #77-0402

Replaced by #77-0400

?
Manufacturer substitution
This part replaces 77-0402. Substitute parts can look different from the original.
In Stock
Stop 61-4670
#2

Starter motor 28222 (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.
In Stock
Nut 3296-42
Nut

Part #3296-42

Replaced by #3296-42

?
Manufacturer substitution
This part replaces 3296-42. Substitute parts can look different from the original.
This item is not returnable
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
In Stock
Frame Wa 71-5200
Frame wa

Part #71-5200

Replaced by #71-5200-03

?
Manufacturer substitution
This part replaces 71-5200. Substitute parts can look different from the original.
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

Main causes: punctured tire, damaged rim…

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

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

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

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

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

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

Main causes: dirty carburetor, stale fuel…

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

Repair guides for gas snowblowers

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

How to replace snowblower skid shoes

How to replace snowblower skid shoes

To prevent damage to your snowblower auger, replace the skid shoes when both sides of the shoe are worn. It's an easy re…

Repair difficulty
Time required
 15 minutes or less
How to replace a snowblower auger drive cable

How to replace a snowblower auger drive cable

A loose or snapped auger drive cable can prevent the auger from rotating. Follow this step-by-step guide to replace the …

Repair difficulty
Time required
 15 minutes or less
How to replace a snowblower electric starter

How to replace a snowblower electric starter

Replace the electric starter on your snowblower if it doesn't work.…

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.

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.…

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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