MTD
Gas Snowblower

Model # 31AS6HEG799 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AS6HEG799 snow thrower, as well as links to manuals and error code tables, if available.

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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.

Model diagram and schematic

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ALL PARTS
Showing 10 of 383 parts  |

Lawn & Garden Equipment Cotter Pin, 1/4- to 5/16-in
#10

Impeller/spiral/housing, auger diagram

Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

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$2.49
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Snowblower Shear Pin (replaces 738-04124)
#21

Impeller/spiral/housing, auger diagram

Snowblower shear pin (replaces 738-04124)

Part #738-04124A

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$3.08
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Snowblower Auger Clutch Cable (replaces 946-04230A)
Snowblower auger clutch cable

Part #746-04230

Replaced by #946-04230B

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Manufacturer substitution
This part replaces 746-04230. Substitute parts can look different from the original.
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Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591)
Lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

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$4.09
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Snowblower Clutch Cable (replaces 746-04229B, 946-04229)
#27

Wheel/frame cover diagram

Clutch cable

Part #746-04229

Replaced by #946-04229B

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Manufacturer substitution
This part replaces 746-04229. Substitute parts can look different from the original.
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$20.02
26% OFF MSRP : $27.00
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Lawn & Garden Equipment Carriage Bolt (replaces 753-08024, 910-0451)
Lawn & garden equipment carriage bolt (replaces 753-08024, 910-0451)

Part #710-0451

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$5.07
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Snowblower Auger Drive Belt (replaces 2705614, 954-04050A)
#56

Wheel/frame cover diagram

Belt

Part #754-04050

Replaced by #256963

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Manufacturer substitution
This part replaces 754-04050. Substitute parts can look different from the original.
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Get free shipping with Automatic Reorder

$29.07
15% OFF Phone Price : $34.07
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Lawn Tractor Flange Nut (replaces 00012173, WD-129-103)
Lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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$3.39
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Snowblower Auger Shaft Gear (replaces 717-04861, 917-0528A)
#46

Impeller/spiral/housing, auger diagram

Worm gear

Part #717-0528A

Replaced by #917-04861

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Manufacturer substitution
This part replaces 717-0528A. Substitute parts can look different from the original.
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$42.68
21% OFF MSRP : $54.00
In Stock
Snowblower Friction Wheel Assembly (replaces 935-04054)
#64

Wheel/frame cover diagram

Wheel

Part #735-04054

Replaced by #935-04054A

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Manufacturer substitution
This part replaces 735-04054. Substitute parts can look different from the original.
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$47.79
9% OFF Phone Price : $52.79
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Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

April 20, 2023

Main causes: punctured tire, damaged rim…

April 20, 2023

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

April 20, 2023

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

April 20, 2023

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

April 20, 2023

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

April 20, 2023

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

April 20, 2023

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

April 20, 2023
April 20, 2023

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

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 snowblower skid shoes
February 09, 2021

How to replace snowblower skid shoes

To prevent damage to your snowblower auger, replace the skid shoes when both sides of the shoe are worn. It's an easy re…

Repair difficulty
Time required
 15 minutes or less
How to replace a snowblower auger drive cable
December 01, 2015

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 electric starter
December 01, 2015

How to replace a snowblower electric starter

Replace the electric starter on your snowblower if it doesn't work.…

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all snowblowers

Use the advice and tips in these articles and videos to get the most out of your snowblower.

How to make your snowblower last longer
November 21, 2022

How to make your snowblower last longer

Learn the steps to take to adjust and maintain your snowblower so it lasts longer.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute
August 05, 2022

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
June 29, 2022

Top questions about Sears and Sears PartsDirect

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