MTD
Gas Snowblower

Model #31AM63EF729 MTD snow thrower

Here are the diagrams and repair parts for MTD 31AM63EF729 snow thrower, as well as links to manuals and error code tables, if available.

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Owner’s manual

    Showing 10 of 251 parts

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

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

    Part #714-04040
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    $3.59 | 
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    Was: $4.49
    Snowblower Auger Clutch Cable#50

    Auger & housing Diagram

    Snowblower auger clutch cable

    Part #746-04230
    Replaced by #946-04230B
    ?
    Manufacturer substitution
    This part replaces 746-04230. Substitute parts can look different from the original.
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    Lawn & Garden Equipment Hex Flange Nut#29

    Drive system Diagram

    Lawn & garden equipment hex flange nut

    Part #712-0417A
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    Snowblower Clutch Cable#30

    Drive system Diagram

    Clutch cable

    Part #746-04229
    Replaced by #946-04229B
    ?
    Manufacturer substitution
    This part replaces 746-04229. Substitute parts can look different from the original.
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    $16.29 | 
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    MSRP: $21.00
    Lawn & Garden Equipment Nut

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    Lawn & garden equipment nut

    Part #712-04064
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    MSRP: $3.50
    Lawn Tractor Flange Nut

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    Lawn tractor flange nut

    Part #712-04065
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    Snowblower Skid Shoe#54

    Auger & housing Diagram

    Skid shoe

    Part #784-5580
    Replaced by #784-5580-0637
    ?
    Manufacturer substitution
    This part replaces 784-5580. Substitute parts can look different from the original.
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    MSRP: $25.00
    Snowblower Ground Drive Belt, 7/16 x 34-11/16-in#59

    Drive system Diagram

    Snowblower ground drive belt

    Part #754-0367
    Replaced by #954-0367
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    Manufacturer substitution
    This part replaces 754-0367. Substitute parts can look different from the original.
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    Snowblower Skid Shoe#55

    Auger & housing Diagram

    Snowblower skid shoe

    Part #731-06439
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    MSRP: $23.00
    Snowblower Auger Drive Belt#56

    Drive system Diagram

    Belt

    Part #754-04050
    Replaced by #256963
    ?
    Manufacturer substitution
    This part replaces 754-04050. Substitute parts can look different from the original.
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    $18.99 | 
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    Was: $23.78

    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.

    August 5, 2022

    Introducing new technical repair content that we’re developing for the Sears Technical Institute

    By Sears PartsDirect staff

    Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.

    June 29, 2022

    Top questions about Sears and Sears PartsDirect

    By Sears PartsDirect staff

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