MTD
Gas Snowblower

Model # 31A-3BAD729 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31A-3BAD729 snow thrower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 98 parts  |

Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

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$2.56
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Lawn & Garden Equipment Carriage Bolt (replaces 753-08024, 910-0451) 710-0451
#3

Auger & housing diagram

Lawn & garden equipment carriage bolt (replaces 753-08024, 910-0451)

Part #710-0451

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$5.22
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Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
#21

Auger & housing diagram

Lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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$3.39
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Lawn & Garden Equipment Nut 712-04064
Lawn & garden equipment nut

Part #712-04064

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Skid Shoe 784-5580
#46

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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$22.25
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Snowblower Flange Bearing 741-0493A
#43

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.
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Bearing 741-0245
Bearing

Part #741-0245

Replaced by #941-0245

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Manufacturer substitution
This part replaces 741-0245. Substitute parts can look different from the original.
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Lawn Tractor Screw, 1/4-20 X 5/8-in (replaces 910-1652) 710-1652
#17

Fuel tank/wheels/handle diagram

Lawn tractor screw, 1/4-20 x 5/8-in (replaces 910-1652)

Part #710-1652

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Snowblower Chute Deflector 731-04426A
#7

Auger & housing diagram

Snowblower chute deflector

Part #731-04426A

Replaced by #731-04426C

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Manufacturer substitution
This part replaces 731-04426A. Substitute parts can look different from the original.
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$17.79
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Shave Plate 790-00117
#45

Auger & housing diagram

Shave plate

Part #790-00117

Replaced by #790-00117-0637

?
Manufacturer substitution
This part replaces 790-00117. Substitute parts can look different from the original.
$33.09
13% OFF Phone Price : $38.09
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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

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

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

Main causes: punctured tire, damaged rim…

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

Main causes: dirty carburetor, stale fuel…

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

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

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 adjust snowblower skid shoes

How to adjust snowblower skid shoes

To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high.…

Repair difficulty
Time required
 15 minutes or less
How to rebuild a snowblower carburetor

How to rebuild a snowblower carburetor

Rebuild the carburetor on your snowblower if the engine isn't getting fuel.…

Repair difficulty
Time required
 45 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.

How to make your snowblower last longer

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

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.…