Model #CS40EA Official Hitachi chainsaw
Here are the diagrams and repair parts for Hitachi CS40EA chainsaw, as well as links to manuals and error code tables, if available.
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Showing 10 of 174 parts
#148
All parts Diagram
Chainsaw brake handle
Part #668-5373
The manufacturer no longer makes this part, and there's no substitute part
#94
All parts Diagram
Priming pump
Part #668-5139
The manufacturer no longer makes this part, and there's no substitute part
#49
All parts Diagram
Wire,b
Part #668-5338
The manufacturer no longer makes this part, and there's no substitute part
#135
All parts Diagram
Brake link
Part #669-6901
The manufacturer no longer makes this part, and there's no substitute part
#78B
All parts Diagram
Shim
Part #669-6867
The manufacturer no longer makes this part, and there's no substitute part
#166
All parts Diagram
Oil grommet
Part #669-6868
The manufacturer no longer makes this part, and there's no substitute part
#82
All parts Diagram
Starter pawl
Part #669-8417
The manufacturer no longer makes this part, and there's no substitute part
#158
All parts Diagram
Clutch
Part #669-6883
The manufacturer no longer makes this part, and there's no substitute part
#25
All parts Diagram
Screen inlet
Part #668-4700
The manufacturer no longer makes this part, and there's no substitute part
#12
All parts Diagram
Cover packin
Part #669-6852
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas chainsaws
Repair guides for gas chainsaws

If your chainsaw isn't running well, a dirty carburetor could be the problem. You can take it apart, clean it and rebuild it, using a carburetor rebuild kit. This repair guide takes you through the process.

The fuel line on a chainsaw becomes brittle over time and can crack. Replacing it doesn't require a lot of DYI experience. These instructions show you how.

If the engine won't start even though there's fuel in the chainsaw, the carburetor could be the problem. Sometimes, it's easier to replace the carburetor than to clean it and rebuild it. Follow these steps to do the job yourself in about half an hour.
Articles and videos common to all chainsaws

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

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