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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  |
Lawn & Garden Equipment Engine Spark Plug (replaces 585358201, 952030150) 503235111
#10

Cylinder piston diagram

Lawn & garden equipment engine spark plug (replaces 585358201, 952030150)

Part #503235111

This item is not returnable
$6.09 | 
14% OFF Phone Price : $7.09
In Stock
Chainsaw Check Valve (replaces 5300261-19, 530-026119) 530026119
#7

Crankcase diagram

Chainsaw check valve (replaces 5300261-19, 530-026119)

Part #530026119

This item is not returnable
$3.23
Back Order
Chainsaw Primer Bulb 503936601
#11

Carburetor & air filter diagram

Chainsaw primer bulb

Part #503936601

$13.49 | 
13% OFF Phone Price : $15.49
In Stock
Tank Cap Assembly 544111201
Tank cap assembly

Part #544111201

Replaced by #544111203

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Manufacturer substitution
This part replaces 544111201. Substitute parts can look different from the original.
This item is not returnable
$2.69 | 
27% OFF Phone Price : $3.69
In Stock
Winter Kit 544464501
#1

Winter kit diagram

Winter kit

Part #544464501

$10.92
In Stock
Pin 3x26 Tho 720182520
#3

Fuel tank diagram

Pin 3x26 tho

Part #720182520

This item is not returnable
$2.31
In Stock
Brake Spring 503465901
#7

Chain brake & clutch cover diagram

Brake spring

Part #503465901

This item is not returnable
$4.19
In Stock
Lawn & Garden Equipment Screw 503217010
Lawn & garden equipment screw

Part #503217010

This item is not returnable
$2.99
In Stock
Chainsaw Recoil Starter Rope 505305125
#8

Starter diagram

Chainsaw recoil starter rope

Part #505305125

This item is not returnable
$5.23
In Stock
Lock Out Spring 544099901
#5

Fuel tank diagram

Lock out spring

Part #544099901

This item is not returnable
$3.15
In Stock

Symptoms for gas chainsaws

Choose a symptom to see related chainsaw repairs.

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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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Why does my chainsaw run roughly?

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

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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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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…

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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
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…

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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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