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MTD
Gas Snowblower

Model # 31BS62EE799 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31BS62EE799 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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Owner’s manual
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Model diagram and schematic

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Showing 10 of 310 parts  |
Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
#10

Gearbox/auger housing/spiral diagram

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

Part #714-04040

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Troybilt Snowblower Shear Pin (replaces 738-04124) 738-04124A
#21

Gearbox/auger housing/spiral diagram

Troybilt snowblower shear pin (replaces 738-04124)

Part #738-04124A

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Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

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Snowblower Scraper Blade 790-00120-4043
#35

Gearbox/auger housing/spiral diagram

Snowblower scraper blade

Part #790-00120-4043

Replaced by #790-00120-0637

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Manufacturer substitution
This part replaces 790-00120-4043. Substitute parts can look different from the original.
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Snowblower Auger Drive Belt, 1/2 X 35-1/4-in 954-04050A
#56

Wheels/axle/belts diagram

Snowblower auger drive belt, 1/2 x 35-1/4-in

Part #954-04050A

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Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

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Toro Lawn & Garden Equipment Carriage Bolt (replaces 753-08024, 910-0451) 710-0451
Toro lawn & garden equipment carriage bolt (replaces 753-08024, 910-0451)

Part #710-0451

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Lawn & Garden Equipment Belt 954-04260
#57

Wheels/axle/belts diagram

Lawn & garden equipment belt

Part #954-04260

Replaced by #490-501-Y005

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This part replaces 954-04260. Substitute parts can look different from the original.
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Snowblower Skid Shoe 731-06439
#36

Gearbox/auger housing/spiral diagram

Snowblower skid shoe

Part #731-06439

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Snowblower Clean-out Tool (replaces 731-2643) 931-2643
#18

Gearbox/auger housing/spiral diagram

Snowblower clean-out tool (replaces 731-2643)

Part #931-2643

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Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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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 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 throw snow far enough?

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

Read more

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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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 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 does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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Why won't my snowblower clear snow well?

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

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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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Repair guides for gas snowblowers

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

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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.…

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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.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a snowblower shave plate

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

Effective articles & videos to help repair your snowblowers

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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.…

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