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MTD
Gas Snowblower

Model # 31AH55TQ799 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AH55TQ799 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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ALL PARTS
Showing 10 of 389 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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$3.00 | 
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Snowblower Auger Clutch Cable 946-04230A
#46

Gearbox/auger/spiral 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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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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$4.40 | 
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Toro Lawn & Garden Equipment Carriage Bolt (replaces 753-08024, 910-0451) 710-0451
#15

Gearbox/auger/spiral diagram

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

Part #710-0451

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$5.42 | 
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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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$4.49 | 
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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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$5.27 | 
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Snowblower Auger Drive Belt, 1/2 X 37-in 954-04195A
#68

Handles/pulleys diagram

Snowblower auger drive belt, 1/2 x 37-in

Part #954-04195A

Replaced by #490-501-Y080

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Manufacturer substitution
This part replaces 954-04195A. Substitute parts can look different from the original.
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$32.27 | 
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Snowblower Scraper Blade 790-00118-0691
#9

Gearbox/auger/spiral diagram

Snowblower scraper blade

Part #790-00118-0691

Replaced by #790-00118-0637

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Manufacturer substitution
This part replaces 790-00118-0691. Substitute parts can look different from the original.
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Yard-man Snowblower Spring 732-04460
#24

Gearbox/auger/spiral diagram

Yard-man snowblower spring

Part #732-04460

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$7.20 | 
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Snowblower Clean-out Tool (replaces 731-2643) 931-2643
#30

Gearbox/auger/spiral diagram

Snowblower clean-out tool (replaces 731-2643)

Part #931-2643

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$25.67 | 
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