MTD
Gas Snowblower

Model #31BH95SI799 MTD snow thrower

Here are the diagrams and repair parts for MTD 31BH95SI799 snow thrower, as well as links to manuals and error code tables, if available.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

    Showing 10 of 265 parts

    Lawn & Garden Equipment Cotter Pin, 1/4- to 5/16-in#13

    Auger & housing/gearbox Diagram

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

    Part #714-04040
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    $4.49 | 
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    MSRP: $5.20
    Lawn & Garden Equipment Lock Nut, 5/16-18

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    Lawn & garden equipment lock nut, 5/16-18

    Part #712-04063
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    $3.09 | 
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    MSRP: $4.30
    Lawn & Garden Equipment Carriage Bolt#6

    Auger & housing/gearbox Diagram

    Lawn & garden equipment carriage bolt

    Part #710-0451
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    $3.49 | 
    27% OFF 
    MSRP: $4.80
    Lawn Tractor Flange Nut

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    Lawn tractor flange nut

    Part #712-04065
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    $3.19 | 
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    MSRP: $4.10
    Lawn & Garden Equipment Self-Tapping Bolt, 5/16-18 x 3/4-in#52

    Auger & housing/gearbox Diagram

    Lawn & garden equipment self-tapping bolt, 5/16-18 x 3/4-in

    Part #710-1260A
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    $4.69
    Lawn Tractor Self-Tapping Screw, 5/16-18 x 3/4-in

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    Lawn tractor self-tapping screw, 5/16-18 x 3/4-in

    Part #710-04484
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    MSRP: $3.60
    Lawn Tractor Screw#13

    Drive Diagram

    Lawn tractor screw

    Part #710-0599
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    Lawn Mower Handle Knob

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    Knob wing nut

    Part #720-0284
    Replaced by #720-04072A
    ?
    Manufacturer substitution
    This part replaces 720-0284. Substitute parts can look different from the original.
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    $5.79 | 
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    MSRP: $8.50
    Lawn & Garden Equipment Bell Washer

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    Lawn & garden equipment bell washer

    Part #736-0242
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    Lawn & Garden Equipment Lock Washer#91

    Drive Diagram

    Lawn & garden equipment lock washer

    Part #936-0119
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    $5.99

    Symptoms for gas snowblowers

    Choose a symptom to see related snowblower repairs.

    Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the belts
    Main causes: punctured tire, damaged rim
    Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets
    Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems
    Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect valve lash
    Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, auger cable problems
    Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground, engine problems
    Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly

    Repair guides for gas snowblowers

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

    December 1, 2015
    By Lyle Weischwill
    How to rebuild a snowblower carburetor

    Rebuild the carburetor on your snowblower if the engine isn't getting fuel.

    Repair difficulty
    Time required
     45 minutes or less
    How to replace a snowblower 4-way chute control assembly

    Replace the 4-way chute control assembly on your snowblower if it’s damaged.

    Repair difficulty
    Time required
     30 minutes or less
    December 1, 2015
    By Lyle Weischwill
    How to replace a snowblower stop switch

    Replace the stop switch on your snowblower if your engine won't start.

    Repair difficulty
    Time required
     15 minutes or less

    Articles and videos common to all snowblowers

    Use the advice and tips in these articles and videos to get the most out of your snowblower.

    June 29, 2022

    Top questions about Sears and Sears PartsDirect

    By Sears PartsDirect staff

    Get answers to frequently asked questions about Sears and Sears PartsDirect.