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Western Tool 421 snow blower

Western Tool 421 snow blower Parts

Here are the diagrams and repair parts for Western Tool 421 snow blower, as well as links to manuals and error code tables, if available.

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Browse Parts for 421 Snowblowers

  • Nut for Western Tool 421 - Part 703251

    Upper handle assembly diagram

    Lock Nut

    Part #90071035

    Replaced by #703251

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    Manufacturer substitution
    This part replaces 90071035. Substitute parts can look different from the original.
    In Stock
    $9.54
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  • Wingknob.31- for Western Tool 421 - Part 1501260MA

    Auger housing assembly diagram

    Knob

    Part #90071041

    Replaced by #1501260MA

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    Manufacturer substitution
    This part replaces 90071041. Substitute parts can look different from the original.
    In Stock
    $15.40
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  • Kit Shear Bo for Western Tool 421 - Part 1501216MA

    Auger housing assembly diagram

    Spacer

    Part #90003943

    Replaced by #1501216MA

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    Manufacturer substitution
    This part replaces 90003943. Substitute parts can look different from the original.
    In Stock
    $8.77
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  • Spring Auger for Western Tool 421 - Part 1673MA

    Upper handle assembly diagram

    Spring

    Part #90001673

    Replaced by #1673MA

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    Manufacturer substitution
    This part replaces 90001673. Substitute parts can look different from the original.
    In Stock
    $17.40
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  • Kit Shear Bo for Western Tool 421 - Part 1501216MA

    Auger housing assembly diagram

    Snowblower Shear Bolt

    Part #90070971

    Replaced by #1501216MA

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    Manufacturer substitution
    This part replaces 90070971. Substitute parts can look different from the original.
    In Stock
    $8.77
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  • Gear,worm for Western Tool 421 - Part 1752500YP

    Gear box diagram

    Worm Gear

    Part #90053730

    Replaced by #1752500YP

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    Manufacturer substitution
    This part replaces 90053730. Substitute parts can look different from the original.
    In Stock
    $108.28
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  • Knob Sleeve for Western Tool 421 - Part 51443MA

    Upper handle assembly diagram

    Knob

    Part #90051443

    Replaced by #51443MA

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    Manufacturer substitution
    This part replaces 90051443. Substitute parts can look different from the original.
    In Stock
    $14.20
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  • Ring Quad .9 for Western Tool 421 - Part 53737MA

    Gear box diagram

    Quad Ring

    Part #90053737

    Replaced by #53737MA

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    Manufacturer substitution
    This part replaces 90053737. Substitute parts can look different from the original.
    In Stock
    $10.06
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  • Nut Push On for Western Tool 421 - Part 3535MA

    Upper handle assembly diagram

    Retainer

    Part #90003535

    Replaced by #3535MA

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    Manufacturer substitution
    This part replaces 90003535. Substitute parts can look different from the original.
    In Stock
    $9.71
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  • Nut Push On for Western Tool 421 - Part 73664MA

    Upper handle assembly diagram

    Cap Retrainr

    Part #90073664

    Replaced by #73664MA

    Info Icon
    Manufacturer substitution
    This part replaces 90073664. Substitute parts can look different from the original.
    In Stock
    $10.06
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Most common symptoms to help you fix your snowblowers

Choose a symptom to see related snowblower repairs.

View all

Why does my snowblower engine run rough?

Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets…

Read more

Why doesn't my snowblower auger turn?

Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case…

Read more

How do I tune up my snowblower?

Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b…

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Why does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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Why doesn't my snowblower self propel?

Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground…

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Why won't my snowblower throw snow far enough?

Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems…

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Why won't my snowblower clear snow well?

Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, …

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Why won't my snowblower chute turn?

Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly…

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Repair guides for gas snowblowers

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

View all
How to adjust snowblower skid shoes

How to adjust snowblower skid shoes

To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high.…

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Repair time and Difficulty

 15 minutes or less
How to rebuild a snowblower carburetor

How to rebuild a snowblower carburetor

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

Read more

Repair time and Difficulty

 45 minutes or less
How to replace a snowblower 4-way chute control assembly

How to replace a snowblower 4-way chute control assembly

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

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Repair time and Difficulty

 30 minutes or less

Effective articles & videos to help repair your snowblowers

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

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Snowblower won’t start: 4 easy DIY fixes

Snowblower won’t start: 4 easy DIY fixes

Find easy DIY tips to fix your snowblower when it won't start…

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

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

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

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

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

Read more

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