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MTD
Gas Snowblower

Model # 31AM32BD799M Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AM32BD799M 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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Showing 10 of 108 parts  |
Troybilt Snowblower Shear Pin (replaces 738-04124) 738-04124A
#42

Lower chute/auger/housing 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
#20

Lower chute/auger/housing diagram

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

Lower chute/auger/housing diagram

Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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

Lower chute/auger/housing diagram

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

Part #710-0451

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Snowblower Auger Drive Belt, 3/8 X 27-1/8-in (replaces 754-04014, 764-04014, Oem-754-04014) 954-04014
#48

Handles/wheels diagram

Snowblower auger drive belt, 3/8 x 27-1/8-in (replaces 754-04014, 764-04014, oem-754-04014)

Part #954-04014

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Snowblower Ground Drive Belt, 3/8 X 43-3/16-in (replaces 754-04013, Oem-754-04013) 954-04013
#47

Handles/wheels diagram

Snowblower ground drive belt, 3/8 x 43-3/16-in (replaces 754-04013, oem-754-04013)

Part #954-04013

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Lawn Tractor Self-tapping Screw, 5/16-18 X 3/4-in (replaces 01008620) 710-04484
Lawn tractor self-tapping screw, 5/16-18 x 3/4-in (replaces 01008620)

Part #710-04484

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Clean-out Tool 731-2643
#14

Lower chute/auger/housing diagram

Clean-out tool

Part #731-2643

Replaced by #931-2643

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Manufacturer substitution
This part replaces 731-2643. Substitute parts can look different from the original.
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Knob 720-04072
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.
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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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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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