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Lawn-Boy
Gas Snowblower

Model # 522R (28231-7900001 & UP) Official Lawn-Boy snow thrower

Here are the diagrams and repair parts for Official Lawn-Boy 522R-28231-7900001-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

Gear 5-7180
#43

Auger assembly (continued) diagram

Gear

Part #5-7180

$160.73
In Stock
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
Cap 288-2
#19A

Engine assembly diagram

Cap

Part #288-2

Replaced by #288-2

?
Manufacturer substitution
This part replaces 288-2. Substitute parts can look different from the original.
$24.47
In Stock
Shaft 37-6780
#25

Traction assembly (continued) diagram

Shaft

Part #37-6780

Replaced by #37-6780

?
Manufacturer substitution
This part replaces 37-6780. Substitute parts can look different from the original.
$158.04
In Stock
Screw 32144-4
Screw

Part #32144-4

Replaced by #32144-4

?
Manufacturer substitution
This part replaces 32144-4. Substitute parts can look different from the original.
This item is not returnable
$2.66
In Stock
Washer 3256-68
#11

Auger assembly diagram

Washer

Part #3256-68

Replaced by #3256-68

?
Manufacturer substitution
This part replaces 3256-68. Substitute parts can look different from the original.
This item is not returnable
$5.74
In Stock
Special Screw 43-7290
#29

Engine assembly diagram

Special screw

Part #43-7290

Replaced by #43-7290

?
Manufacturer substitution
This part replaces 43-7290. Substitute parts can look different from the original.
$14.31
In Stock
Deflector 56-2680
#18

Auger assembly diagram

Deflector

Part #56-2680

Replaced by #56-2680

?
Manufacturer substitution
This part replaces 56-2680. Substitute parts can look different from the original.
$24.07
In Stock

Symptoms for gas snowblowers

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What should I do about a damaged snowblower tire?

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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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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

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