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Husqvarna
Gas Chainsaw

Model # 450 Official Husqvarna chainsaw

Here are the diagrams and repair parts for Official Husqvarna 450 chainsaw, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 179 parts  |
Weed Eater Chainsaw Check Valve (replaces 5300261-19, 530-026119) 530026119
#7

Crankcase diagram

Weed eater chainsaw check valve (replaces 5300261-19, 530-026119)

Part #530026119

This item is not returnable
$9.26
In Stock
Chainsaw Primer Bulb 503936601
#11

Carburetor & air filter diagram

Chainsaw primer bulb

Part #503936601

$14.44
| 
12% OFF Phone Price : $16.44
In Stock
Chainsaw Fuel Tank Assembly 525862101
#1

Fuel tank diagram

Chainsaw fuel tank assembly

Part #525862101

Replaced by #537437906

?
Manufacturer substitution
This part replaces 525862101. Substitute parts can look different from the original.
$37.92
| 
14% OFF Phone Price : $43.92
In Stock
Tank Cap Assembly 544111201
Tank cap assembly

Part #544111201

Replaced by #544111203

?
Manufacturer substitution
This part replaces 544111201. Substitute parts can look different from the original.
$8.67
| 
10% OFF Phone Price : $9.67
In Stock
Lawn & Garden Equipment Engine Fuel Filter 503443201
#10

Fuel tank diagram

Lawn & garden equipment engine fuel filter

Part #503443201

Replaced by #591375401

?
Manufacturer substitution
This part replaces 503443201. Substitute parts can look different from the original.
$13.00
| 
13% OFF Phone Price : $15.00
In Stock
Winter Kit 544464501
#1

Winter kit diagram

Winter kit

Part #544464501

$22.29
In Stock
Chainsaw Chain Catcher 503886301
#15

Crankcase diagram

Chainsaw chain catcher

Part #503886301

This item is not returnable
$9.26
In Stock
Craftsman Chainsaw Recoil Starter Rope 505305125
#8

Starter diagram

Craftsman chainsaw recoil starter rope

Part #505305125

$14.86
In Stock
Craftsman Air Filter Cover 544080802
#16A

Carburetor & air filter diagram

Craftsman air filter cover

Part #544080802

$17.33
| 
10% OFF Phone Price : $19.33
In Stock
Brake Spring 503465901
#7

Chain brake & clutch cover diagram

Brake spring

Part #503465901

$13.00
In Stock

Symptoms for gas chainsaws

Choose a symptom to see related chainsaw repairs.

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What should I do if my chainsaw leaks gas?

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank...

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Why does my chainsaw run roughly?

Main causes: bad gas, engine needs tune up, cracked fuel lines, dirty carburetor...

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Why won't my chainsaw start?

Main causes: stale gasoline, cracked fuel lines, dirty carburetor, damaged spark plug, worn piston rings...

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Repair guides for gas chainsaws

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

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How to rebuild a chainsaw carburetor

How to rebuild a chainsaw carburetor

If your chainsaw isn't running well, a dirty carburetor could be the problem. You can take it apart, clean it and rebuil...

Read more
Repair difficulty
Time required
15 minutes or less
How to replace a chainsaw carburetor

How to replace a chainsaw carburetor

If the engine won't start even though there's fuel in the chainsaw, the carburetor could be the problem. Sometimes, it's...

Read more
Repair difficulty
Time required
15 minutes or less
How to replace chainsaw fuel lines

How to replace chainsaw fuel lines

The fuel line on a chainsaw becomes brittle over time and can crack. Replacing it doesn't require a lot of DYI experienc...

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Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your chainsaws

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

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What are the most common replacement parts for chainsaws?

What are the most common replacement parts for chainsaws?

Learn about the most common replacement parts for chainsaws and how they can help you fix chainsaw problems....

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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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