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Murray
Gas Snowblower

Model # 621450X4D Official Murray snow thrower

Here are the diagrams and repair parts for Official Murray 621450X4D 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

Model diagram and schematic

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ALL PARTS
Showing 10 of 116 parts  |
Filter 56679
#117

Frame components diagram

Filter

Part #56679

Replaced by #394358S

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Manufacturer substitution
This part replaces 56679. Substitute parts can look different from the original.
BEST SELLER
$6.91 | 
13% OFF Phone Price : $7.91
In Stock
Up Assembly 762222
#590

Discharge chute diagram

Up assembly

Part #762222

Replaced by #762222MA

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Manufacturer substitution
This part replaces 762222. Substitute parts can look different from the original.
BEST SELLER
$58.23 | 
8% OFF Phone Price : $63.23
In Stock
Boot Spring 308146
#743

Handle diagram

Boot spring

Part #308146

Replaced by #308146MA

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Manufacturer substitution
This part replaces 308146. Substitute parts can look different from the original.
$10.97 | 
15% OFF Phone Price : $12.97
In Stock
Nut, 1/4-20 782585
Nut, 1/4-20

Part #782585

Replaced by #703251

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Manufacturer substitution
This part replaces 782585. Substitute parts can look different from the original.
$8.07 | 
11% OFF Phone Price : $9.07
In Stock
Lock Nut 73826
Lock nut

Part #73826

Replaced by #703251

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Manufacturer substitution
This part replaces 73826. Substitute parts can look different from the original.
$8.07 | 
11% OFF Phone Price : $9.07
In Stock
Bolt 302843
#602

Discharge chute diagram

Bolt

Part #302843

Replaced by #704210

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Manufacturer substitution
This part replaces 302843. Substitute parts can look different from the original.
$7.69 | 
12% OFF Phone Price : $8.69
In Stock
Nut 71391
Nut

Part #71391

The manufacturer no longer makes this part, and there's no substitute part

Auger Assembly 327072
#520

Auger housing diagram

Auger assembly

Part #327072

Replaced by #327072MA

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Manufacturer substitution
This part replaces 327072. Substitute parts can look different from the original.
$175.17 | 
5% OFF Phone Price : $185.17
In Stock
Blade 302565
#520-2

Auger housing diagram

Blade

Part #302565

Replaced by #302565MA

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Manufacturer substitution
This part replaces 302565. Substitute parts can look different from the original.

Get free shipping with Automatic Reorder

$26.21 | 
16% OFF Phone Price : $31.21
In Stock
Ring 577598
#662

Wheels diagram

Ring

Part #577598

Replaced by #577598MA

?
Manufacturer substitution
This part replaces 577598. Substitute parts can look different from the original.
This item is not returnable
$7.77
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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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…

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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 start?

Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect…

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What should I do about a damaged snowblower tire?

Main causes: punctured tire, damaged rim…

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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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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 engine run rough?

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

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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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Repair guides for gas snowblowers

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

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How to replace a snowblower fuel filter

How to replace a snowblower fuel filter

Replace the fuel filter on your snowblower if it's clogged or damaged.…

Read more
Repair difficulty
Time required
 15 minutes or less
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 difficulty
Time required
 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.…

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Repair difficulty
Time required
 45 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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How to make your snowblower last longer

How to make your snowblower last longer

Learn the steps to take to adjust and maintain your snowblower so it lasts longer.…

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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.…

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