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Echo
Gas Chainsaw

Model # CS-400EVL Official Echo chainsaw

Here are the diagrams and repair parts for Official Echo CS-400EVL chainsaw, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 207 parts  |
Spring 123121-03930
#16

Carburetor diagram

Spring

Part #123121-03930

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

Pump Gasket 123125-03930
#25

Carburetor diagram

Pump gasket

Part #123125-03930

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

Screw 123139-03930
#11

Carburetor diagram

Screw

Part #123139-03930

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

Needle Valve 123137-03930
#13

Carburetor diagram

Needle valve

Part #123137-03930

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

Lever 123123-03930
#9

Carburetor diagram

Lever

Part #123123-03930

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

Screen 123126-03930
#23

Carburetor diagram

Screen

Part #123126-03930

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

Spring 123122-06530
#12

Carburetor diagram

Spring

Part #123122-06530

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

Valve Diaphm 123165-03930
#7

Carburetor diagram

Valve diaphm

Part #123165-03930

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

Diaphragm 123141-03930
#3

Carburetor diagram

Diaphragm

Part #123141-03930

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

Gasket 123140-03930
#4

Carburetor diagram

Gasket

Part #123140-03930

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…

Read more
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…

Read more
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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