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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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450 Chainsaws
#7
Crankcase diagram
Weed eater chainsaw check valve (replaces 5300261-19, 530-026119)
Part #530026119
This item is not returnable
$9.97
In Stock
Tank cap assembly
Part #544111201
Replaced by #544111203
?
Manufacturer substitution
This part replaces 544111201. Substitute parts can look different from the original.
$10.87 |
16% OFF Phone Price : $12.87
In Stock
#6
Clutch & oil pump diagram
Chainsaw oil pump
Part #540057901
This item is not returnable
$13.97
In Stock
#11
Carburetor & air filter diagram
Chainsaw primer bulb
Part #503936601
$12.42 |
14% OFF Was : $14.44
In Stock
#7
Ignition system diagram
Ignition module
Part #573935701
Replaced by #573935702
?
Manufacturer substitution
This part replaces 573935701. Substitute parts can look different from the original.
$93.31
In Stock
#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.
$44.32 |
12% OFF Phone Price : $50.32
In Stock
#7
Chain brake & clutch cover diagram
Brake spring
Part #503465901
$13.97
In Stock
#8
Starter diagram
Craftsman chainsaw recoil starter rope
Part #505305125
$15.97
In Stock
#16A
Carburetor & air filter diagram
Craftsman air filter cover
Part #544080802
$15.60 |
11% OFF Phone Price : $17.60
In Stock
#3
Clutch & oil pump diagram
Chainsaw clutch (replaces 503873072)
Part #578097901
$38.48 |
13% OFF Phone Price : $44.48
In Stock
Symptoms for gas chainsaws
Choose a symptom to see related chainsaw repairs.
Main causes: stale gasoline, cracked fuel lines, dirty carburetor, damaged spark plug, worn piston rings…
Main causes: bad gas, engine needs tune up, cracked fuel lines, dirty carburetor…
Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…
Repair guides for gas chainsaws
These step-by-step repair guides will help you safely fix what’s broken on your chainsaw.

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…
Repair difficulty
Time required
15 minutes or less

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…
Repair difficulty
Time required
15 minutes or less

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…
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.

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

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