Snapper
Gas Walk-Behind Mower

Model #RP21501 Snapper lawn mower - series 0 & 1

Here are the diagrams and repair parts for Snapper RP21501 lawn mower - series 0 & 1, 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.

    Showing 10 of 386 parts

    Snowblower Nut

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    Hcln, 1/4c g

    Part #7090372
    Replaced by #703251
    ?
    Manufacturer substitution
    This part replaces 7090372. Substitute parts can look different from the original.
    BEST SELLER
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    $7.69 | 
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    Lawn & Garden Equipment Bolt, 5/16-18 x 3/4-in#35

    Drive system self-propelled Diagram

    Rhsnb, 5/16c

    Part #7090316
    Replaced by #703225
    ?
    Manufacturer substitution
    This part replaces 7090316. Substitute parts can look different from the original.
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    This item is not returnable
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    $6.29 | 
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    Lawn & Garden Equipment Push Nut

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    Pushnut 1/4

    Part #7091020
    Replaced by #704005
    ?
    Manufacturer substitution
    This part replaces 7091020. Substitute parts can look different from the original.
    This item is not returnable
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    Lawn & Garden Equipment Lock Washer

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    Slw, .318x.5

    Part #7090187
    Replaced by #703116
    ?
    Manufacturer substitution
    This part replaces 7090187. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $5.79 | 
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    Lawn Tractor Nut

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    Hn, 5/16c gr

    Part #7091511
    Replaced by #7091511SM
    ?
    Manufacturer substitution
    This part replaces 7091511. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $3.78
    Lawn & Garden Equipment Washer#31

    Drive system self-propelled Diagram

    Washer

    Part #7090122
    Replaced by #703590
    ?
    Manufacturer substitution
    This part replaces 7090122. Substitute parts can look different from the original.
    This item is not returnable
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    $5.99 | 
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    Lawn & Garden Equipment Washer

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    Fw, .28x.63x

    Part #7091294
    Replaced by #703332
    ?
    Manufacturer substitution
    This part replaces 7091294. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.09 | 
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    Lawn Tractor Ignition Key#5

    Electric start Diagram

    Key

    Part #7073406
    Replaced by #1717163SM
    ?
    Manufacturer substitution
    This part replaces 7073406. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $14.79 | 
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    Lawn & Garden Equipment Bolt#18

    Accessory-thatcherizer Diagram

    Rhssnb, 1/4c

    Part #7091530
    Replaced by #703101
    ?
    Manufacturer substitution
    This part replaces 7091530. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.89 | 
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    Phone Price: $7.89
    Lawn & Garden Equipment Screw

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    Hflb, 5/16c

    Part #7090595
    Replaced by #703354
    ?
    Manufacturer substitution
    This part replaces 7090595. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.89 | 
    10% OFF 
    Phone Price: $9.89

    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.

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

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