Craftsman
Gas Walk-Behind Mower

Model #917378422 Craftsman gas walk-behind lawn mower

Here are the diagrams and repair parts for Craftsman 917378422 gas walk-behind lawn mower, 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

    Showing 10 of 250 parts

    Lawn Mower Lock Nut, 3/8-in#31

    Wheels/tires/bag Diagram

    Pipe fitting

    Part #132010
    Replaced by #532409149
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    Manufacturer substitution
    This part replaces 132010. Substitute parts can look different from the original.
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    Lawn Mower Lock Nut, 3/8-in#26

    Engine/handles Diagram

    Lock nut

    Part #83923
    Replaced by #532409149
    ?
    Manufacturer substitution
    This part replaces 83923. Substitute parts can look different from the original.
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    Lawn Mower Lock Nut, 3/8-in#9

    Wheels/tires/bag Diagram

    Hex flange lock nut

    Part #145212
    Replaced by #532409149
    ?
    Manufacturer substitution
    This part replaces 145212. Substitute parts can look different from the original.
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    Lawn Mower Blade#47

    Engine/handles Diagram

    Belt, 21-in

    Part #175064
    Replaced by #532406712
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    Manufacturer substitution
    This part replaces 175064. Substitute parts can look different from the original.
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    Lawn Mower Handle Knob#6

    Engine/handles Diagram

    Handle knob

    Part #136376
    Replaced by #532185577
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    Manufacturer substitution
    This part replaces 136376. Substitute parts can look different from the original.
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    Lawn & Garden Equipment Engine Oil, SAE 30, 20-oz

    #(NI)

    All parts Diagram

    Lawn & garden equipment engine oil, 20-oz

    Part #33000
    Replaced by #40020
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    Manufacturer substitution
    This part replaces 33000. Substitute parts can look different from the original.
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    Lawn Mower Wheel Dust Cover#14

    Wheels/tires/bag Diagram

    Dust cover

    Part #180504
    Replaced by #581840401
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    Manufacturer substitution
    This part replaces 180504. Substitute parts can look different from the original.
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    Lawn Mower Drive Wheel, 8 x 2-in#11

    Wheels/tires/bag Diagram

    Lawn mower drive wheel, 8 x 2-in

    Part #180775
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    MSRP: $30.00
    Lawn & Garden Equipment Hex Head Bolt, 3/8-24 x 1-1/8-in#50

    Engine/handles Diagram

    Lawn & garden equipment screw

    Part #851084
    Replaced by #532435345
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    Manufacturer substitution
    This part replaces 851084. Substitute parts can look different from the original.
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    Lawn Mower Zone Control Cable#4

    Engine/handles Diagram

    Control cable

    Part #156577
    Replaced by #168552
    ?
    Manufacturer substitution
    This part replaces 156577. Substitute parts can look different from the original.
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    Symptoms for gas walk-behind mowers

    Choose a symptom to see related walk-behind mower repairs.

    Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
    Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
    Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
    Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
    Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
    Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

    Repair guides for gas walk-behind mowers

    These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

    March 1, 2016
    By Lyle Weischwill
    How to replace a lawn mower blade

    Check your lawn mower blade regularly and replaced it if it's bent or damaged.

    Repair difficulty
    Time required
     15 minutes or less
    How to replace a lawn mower ignition coil on an OHV engine

    Replace the ignition coil if it isn't sending electric current to the spark plug when you pull the recoil starter rope.

    Repair difficulty
    Time required
     30 minutes or less
    How to replace a lawn mower flywheel key on a flathead engine

    When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to replace this tiny but essential part.

    Repair difficulty
    Time required
     45 minutes or less

    Articles and videos common to all walk-behind mowers

    Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

    August 30, 2022

    How to enjoy all the online benefits we offer on our Sears PartsDirect website

    By Lyle Weischwill

    Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.

    August 5, 2022

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

    By Lyle Weischwill

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