Gas Snowblower

Model # 31AS2B5-801 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AS2B5-801 snow thrower, as well as links to manuals and error code tables, if available.

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Browse Parts for
31AS2B5-801 Snowblowers
Knob 720-04072
#10

Chute/handle/shroud diagram

Knob

Part #720-04072

Replaced by #720-04072A

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Manufacturer substitution
This part replaces 720-04072. Substitute parts can look different from the original.
BEST SELLER
$9.33
10% OFF Phone Price : $10.33
In Stock
Sears Lawn Tractor Screw 710-0627
#3

Fuel tank/auger 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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Lock Washer 736-0119
#12

Fuel tank/auger diagram

Lock washer

Part #736-0119

Replaced by #936-0119

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Manufacturer substitution
This part replaces 736-0119. Substitute parts can look different from the original.
This item is not returnable
$6.05
14% OFF Phone Price : $7.05
In Stock
Lawn & Garden Equipment Hex Cap Screw 710-0751
#5

Fuel tank/auger diagram

Lawn & garden equipment hex cap screw

Part #710-0751

This item is not returnable
$5.12
16% OFF Phone Price : $6.12
In Stock
Aircap Lawn Tractor Screw (replaces 150011, 910-0134) 710-0134
#28

Chute/handle/shroud diagram

Aircap lawn tractor screw (replaces 150011, 910-0134)

Part #710-0134

This item is not returnable
$6.55
13% OFF Phone Price : $7.55
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Lawn Tractor Hex Bolt 710-3008
#29

Chute/handle/shroud diagram

Lawn tractor hex bolt

Part #710-3008

This item is not returnable
$4.62
18% OFF Phone Price : $5.62
In Stock
Lawn Tractor Push Cap 726-0201
#9

Fuel tank/auger diagram

Lawn tractor push cap

Part #726-0201

This item is not returnable
$10.56
16% OFF Phone Price : $12.56
In Stock
Sears Lawn Mower Roller Wheel 756-0625
#49

Fuel tank/auger diagram

Sears lawn mower roller wheel

Part #756-0625

This item is not returnable
$12.00
14% OFF Phone Price : $14.00
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Lawn & Garden Equipment Cable Tie 725-0157
#11

Chute/handle/shroud diagram

Lawn & garden equipment cable tie

Part #725-0157

Replaced by #726-0178

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Manufacturer substitution
This part replaces 725-0157. Substitute parts can look different from the original.
This item is not returnable
In Stock
Troybilt Snowblower Auger Paddle (replaces 73504032) 735-04032
#30

Fuel tank/auger diagram

Troybilt snowblower auger paddle (replaces 73504032)

Part #735-04032

$24.10
20% OFF Phone Price : $30.10
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Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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

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

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

Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b…

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

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

Main causes: dirty carburetor, stale fuel…

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

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

Repair guides for gas snowblowers

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

How to adjust snowblower engine valve lash

How to adjust snowblower engine valve lash

Adjust the engine valve lash on your snowblower to keep the engine starting and running smoothly.…

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 friction disc

How to replace a snowblower friction disc

The friction disc is one of the components of the drive system. If it's worn or damaged, the snowblower won't self-prope…

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.

Snowblower won’t start – 4 easy DIY fixes

Snowblower won’t start – 4 easy DIY fixes

Find easy DIY tips to fix your snowblower when it won't start…

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.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…