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Hitachi
Gas Chainsaw

Model # CS40EA Official Hitachi chainsaw

Here are the diagrams and repair parts for Official Hitachi CS40EA chainsaw, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 174 parts  |
Piston Pin C 669-6856

#72

All parts diagram

Piston pin c

Part #669-6856

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

Roller Needle 668-5391

#139

All parts diagram

Roller needle

Part #668-5391

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

Throttle Lever 668-5349

#128

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Throttle lever

Part #668-5349

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

Shutter Plate 669-6904

#9

All parts diagram

Shutter plate

Part #669-6904

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

Bolt,hex,5x4 669-6317

#42

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Bolt,hex,5x4

Part #669-6317

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

Step Bolt 669-6878

#85

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Step bolt

Part #669-6878

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

Air Vent Val 668-5370

#96

All parts diagram

Air vent val

Part #668-5370

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

Element Cleaner 669-6891

#4

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Element cleaner

Part #669-6891

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

Oil Pump Cover 669-6893

#143

All parts diagram

Oil pump cover

Part #669-6893

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

Chain Bar 15 Inch (alternative Parts) 669-6912

#156A

All parts diagram

Chain bar 15 inch (alternative parts)

Part #669-6912

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

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…

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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
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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