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MTD
Gas Snowblower

Model # 31AS640F352 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AS640F352 snow thrower, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 221 parts  |
Shave Plate 784-5581A
#33

Auger & housing diagram

Shave plate

Part #784-5581A

Replaced by #790-00120-0637

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Manufacturer substitution
This part replaces 784-5581A. Substitute parts can look different from the original.
BEST SELLER
$35.94 | 
14% OFF Phone Price : $41.94
In Stock
Shave Plate 784-5579A
#33A

Auger & housing diagram

Shave plate

Part #784-5579A

Replaced by #790-00121-0637

?
Manufacturer substitution
This part replaces 784-5579A. Substitute parts can look different from the original.
BEST SELLER
$40.82 | 
13% OFF Phone Price : $46.82
In Stock
Skid Shoe 784-5580
#30

Auger & housing diagram

Skid shoe

Part #784-5580

Replaced by #784-5580-0637

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Manufacturer substitution
This part replaces 784-5580. Substitute parts can look different from the original.
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Get free shipping with Automatic Reorder

$22.25 | 
21% OFF Phone Price : $28.25
In Stock
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

BEST SELLER
This item is not returnable
$4.91 | 
17% OFF Phone Price : $5.91
In Stock
Knob Wing Nut 720-0284
#57

Chute/handles diagram

Knob wing nut

Part #720-0284

Replaced by #720-04072A

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Manufacturer substitution
This part replaces 720-0284. Substitute parts can look different from the original.
BEST SELLER
$9.33 | 
10% OFF Phone Price : $10.33
In Stock
Clean-out Tool 731-2643
#31

Auger & housing diagram

Clean-out tool

Part #731-2643

Replaced by #931-2643

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Manufacturer substitution
This part replaces 731-2643. Substitute parts can look different from the original.
BEST SELLER

Get free shipping with Automatic Reorder

$25.67 | 
19% OFF Phone Price : $31.67
In Stock
Snowblower Flange Bearing 741-0493A
#40

Auger & housing diagram

Snowblower flange bearing

Part #741-0493A

Replaced by #741-0493C

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Manufacturer substitution
This part replaces 741-0493A. Substitute parts can look different from the original.
BEST SELLER
$7.63
In Stock
Yard Machines Lawn & Garden Equipment Bell Washer (replaces 936-0242) 736-0242
Yard machines lawn & garden equipment bell washer (replaces 936-0242)

Part #736-0242

BEST SELLER
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$6.58 | 
13% OFF Phone Price : $7.58
In Stock
Extension Cord 629-0071
#26

Auger pulley diagram

Extension cord

Part #629-0071

Replaced by #929-0071B

?
Manufacturer substitution
This part replaces 629-0071. Substitute parts can look different from the original.
BEST SELLER
$30.18 | 
17% OFF Phone Price : $36.18
In Stock
Sears Lawn Tractor Screw 710-0627
#4

Auger pulley diagram

Sears lawn tractor screw

Part #710-0627

This item is not returnable
$6.47 | 
13% OFF Phone Price : $7.47
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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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Replace the fuel filter on your snowblower if it's clogged or damaged.…

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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.…

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 15 minutes or less
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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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your snowblowers

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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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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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