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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Browse Parts for
CS40EA Chainsaws
Cylinder 669-8430

#63

All parts diagram

Cylinder

Part #669-8430

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

Tap Screw 311-945

#141

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Tap screw

Part #311-945

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

Air Vent Spo 668-5371

#97

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Air vent spo

Part #668-5371

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

Scavenging C 669-8407

#11

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Scavenging c

Part #669-8407

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

Air Vent Val 668-5370

#96

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Air vent val

Part #668-5370

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

Priming Pump 668-5139

#94

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Priming pump

Part #668-5139

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

Plug Cap 669-8435

#46

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Plug cap

Part #669-8435

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

Spark Plug Bpm-7a  (alternative Parts) 669-8432

#13A

All parts diagram

Spark plug bpm-7a (alternative parts)

Part #669-8432

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

Guide Plate 669-6898

#165

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Guide plate

Part #669-6898

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.

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

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

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

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.

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.…

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.…