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Model # 320 (28220-7900001 & UP) Official Lawn-Boy snow thrower
Here are the diagrams and repair parts for Official Lawn-Boy 320 (28220-7900001 & UP) snow thrower, as well as links to manuals and error code tables, if available.
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320 (28220-7900001 & UP) Snowblowers
#32
Rotor housing assembly diagram
Bolt
Part #3229-11
Replaced by #3229-11
?
Manufacturer substitution
This part replaces 3229-11. Substitute parts can look different from the original.
This item is not returnable
$2.20
In Stock
#12
Upper shroud assembly (continued) diagram
Primer
Part #66-7460
Replaced by #66-7460
?
Manufacturer substitution
This part replaces 66-7460. Substitute parts can look different from the original.
This item is not returnable
$8.49
In Stock
#25
Rotor housing assembly diagram
Toro screw
Part #12-3270
This item is not returnable
$3.87
In Stock
#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.
$23.00
In Stock
#13
Upper shroud assembly (continued) diagram
Body primer
Part #44-2750
Replaced by #44-2750
?
Manufacturer substitution
This part replaces 44-2750. Substitute parts can look different from the original.
This item is not returnable
$11.60
In Stock
#18
Upper shroud assembly (continued) diagram
Screw
Part #3290-359
Replaced by #3290-359
?
Manufacturer substitution
This part replaces 3290-359. Substitute parts can look different from the original.
$13.80
In Stock
#12
Rotor housing assembly diagram
Screw
Part #32105-15
Replaced by #32105-15
?
Manufacturer substitution
This part replaces 32105-15. Substitute parts can look different from the original.
This item is not returnable
$3.74
In Stock
#17
Rotor housing assembly diagram
Cap screw
Part #323-44
Replaced by #323-44
?
Manufacturer substitution
This part replaces 323-44. Substitute parts can look different from the original.
$7.74
In Stock
Drive v-belt
Part #71-5381
Replaced by #71-5381
?
Manufacturer substitution
This part replaces 71-5381. Substitute parts can look different from the original.
$28.60
In Stock
#21
Upper shroud assembly (continued) diagram
Washer
Part #3256-61
Replaced by #3256-61
?
Manufacturer substitution
This part replaces 3256-61. Substitute parts can look different from the original.
This item is not returnable
$3.74
In Stock
Symptoms for gas snowblowers
Choose a symptom to see related snowblower repairs.
Main causes: punctured tire, damaged rim…
Main causes: dirty carburetor, stale fuel…
Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets…
Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect…
Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly…
Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground…
Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems…
Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case…
Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b…
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 a snowblower fuel filter
Replace the fuel filter on your snowblower if it's clogged or damaged.…
Repair difficulty
Time required
15 minutes or less
How to replace a snowblower shave plate
Follow the 7 easy steps in this repair guide/video to replace a worn out shave plate on your snowblower.…
Repair difficulty
Time required
15 minutes or less
How to replace a snowblower chute control gearbox assembly
Replace the chute control gearbox on your snowblower if it's stripped or damaged.…
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.
Find easy DIY tips to fix your snowblower when it won't start…
Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…