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MTD
Gas Snowblower

Model # 31AM6BHF793 Official MTD gas snowthrower

Here are the diagrams and repair parts for Official MTD 31AM6BHF793 gas snowthrower, 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 203 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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Troybilt Snowblower Shear Pin (replaces 738-04124) 738-04124A
Troybilt snowblower shear pin (replaces 738-04124)

Part #738-04124A

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Snowblower Shear Pin Kit, 1/4 X 1-1/2-in OEM-738-04124
Snowblower shear pin kit, 1/4 x 1-1/2-in

Part #OEM-738-04124

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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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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 Mower Ground Drive Belt 490-501-M005
#20

Engine drive diagram

Lawn mower ground drive belt

Part #490-501-M005

Replaced by #490-501-Y005

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Manufacturer substitution
This part replaces 490-501-M005. Substitute parts can look different from the original.
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Lawn & Garden Equipment Belt 954-04260
#20

Engine drive diagram

Lawn & garden equipment belt

Part #954-04260

Replaced by #490-501-Y005

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Manufacturer substitution
This part replaces 954-04260. Substitute parts can look different from the original.
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Snowblower Clean-out Tool (replaces 731-2643) 931-2643
#1

Impeller diagram

Snowblower clean-out tool (replaces 731-2643)

Part #931-2643

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Yard-man Snowblower Spring 732-04460
#11

Impeller diagram

Yard-man snowblower spring

Part #732-04460

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Symptoms for gas snowblowers

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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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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 does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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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 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 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 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 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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Repair guides for gas snowblowers

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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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 15 minutes or less
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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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How to make your snowblower last longer

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