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MTD
Gas Snowblower

Model # 31AH55TH799 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AH55TH799 snow thrower, 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 222 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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Snowblower Auger Clutch Cable 946-04230A
#17

Auger & housing diagram

Snowblower auger clutch cable

Part #946-04230A

Replaced by #946-04230B

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Manufacturer substitution
This part replaces 946-04230A. Substitute parts can look different from the original.
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Troybilt Snowblower Shear Pin (replaces 738-04124) 738-04124A
#21

Auger & housing diagram

Troybilt snowblower shear pin (replaces 738-04124)

Part #738-04124A

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Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417a) 712-0417A
#61

Transmission/wheels diagram

Lawn & garden equipment hex flange nut (replaces 753-05549, 912-0417a)

Part #712-0417A

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Clutch Drive Cable 746-04229B
#5

Transmission/wheels diagram

Clutch drive cable

Part #746-04229B

Replaced by #946-04229B

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Manufacturer substitution
This part replaces 746-04229B. Substitute parts can look different from the original.
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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
Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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Snowblower Steering Control Trigger 731-06113
#58

Handle/chute diagram

Snowblower steering control trigger

Part #731-06113

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Snowblower Speed Selector Cable (replaces 746-04396, 746-04396a) 946-04396A
#29

Handle/chute diagram

Snowblower speed selector cable (replaces 746-04396, 746-04396a)

Part #946-04396A

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Gas Snowblower Auger V-belt 954-04195
#71

Transmission/wheels diagram

Gas snowblower auger v-belt

Part #954-04195

Replaced by #490-501-Y080

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Manufacturer substitution
This part replaces 954-04195. Substitute parts can look different from the original.
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Symptoms for gas snowblowers

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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 stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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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 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 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 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 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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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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How to replace a snowblower chute control gearbox assembly

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How to make your snowblower last longer

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