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Lawn-Boy
Gas Snowblower

Model # 522R (28230-7900001 & UP) Official Lawn-Boy snow thrower

Here are the diagrams and repair parts for Official Lawn-Boy 522R-28230-7900001-UP snow thrower, 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 388 parts  |
Lock Nut 3296-29
Lock nut

Part #3296-29

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

Bearing Assembly 12-8789

#NI

All parts diagram

Bearing assembly

Part #12-8789

$34.22
In Stock
Toro Screw 12-3270
#4

Traction assembly diagram

Toro screw

Part #12-3270

This item is not returnable
$3.87
In Stock
Gear 5-7180
#43

Auger assembly (continued) diagram

Gear

Part #5-7180

$160.73
In Stock
Gasket 51-0460
#51

Auger assembly (continued) diagram

Gasket

Part #51-0460

Replaced by #51-0460

?
Manufacturer substitution
This part replaces 51-0460. Substitute parts can look different from the original.
$15.09
In Stock
Nut Retainer 3290-196
#28

Handle assembly left side diagram

Nut retainer

Part #3290-196

Replaced by #3290-196

?
Manufacturer substitution
This part replaces 3290-196. Substitute parts can look different from the original.
$16.23
In Stock
Cap Screw 321-4
#16

Traction assembly (continued) diagram

Cap screw

Part #321-4

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

Post Linkage 47-4990
Post linkage

Part #47-4990

Replaced by #47-4990

?
Manufacturer substitution
This part replaces 47-4990. Substitute parts can look different from the original.
$35.44
In Stock
Screw 32144-70
Screw

Part #32144-70

Replaced by #32144-70

?
Manufacturer substitution
This part replaces 32144-70. Substitute parts can look different from the original.
This item is not returnable
$4.20
In Stock
Bolt 3230-1
#60

Auger assembly (continued) diagram

Bolt

Part #3230-1

Replaced by #3230-1

?
Manufacturer substitution
This part replaces 3230-1. Substitute parts can look different from the original.
This item is not returnable
$3.09
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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What should I do about a damaged snowblower tire?

Main causes: punctured tire, damaged rim…

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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 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 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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Why won't my snowblower chute turn?

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

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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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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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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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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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Repair guides for gas snowblowers

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

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How to replace a snowblower chute control gearbox assembly

How to replace a snowblower chute control gearbox assembly

Replace the chute control gearbox on your snowblower if it's stripped or damaged.…

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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.

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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.…

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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

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