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Echo
Gas Chainsaw

Model # CS-400 Official Echo chainsaw

Here are the diagrams and repair parts for Official Echo CS-400 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 212 parts  |
Spring, Clutch (3) V451000500
#4

Clutch diagram

Spring, clutch (3)

Part #V451000500

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

Chainsaw Drive Gear V651000011
#22

Chain brake diagram

Chainsaw drive gear

Part #V651000011

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

Label-model-cs-400 X503007391
#1

Labels diagram

Label-model-cs-400

Part #X503007391

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

Cover, Metering Diaphragm 12314203930
#2

Carburetor - wt-820 diagram

Cover, metering diaphragm

Part #12314203930

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

Handle C400000430
#1

Handle/throttle control/engine cover diagram

Handle

Part #C400000430

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

Screwdriver-125mm 89581100130
#14

Tools diagram

Screwdriver-125mm

Part #89581100130

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

Clip V490000310
#5

Ignition/flywheel diagram

Clip

Part #V490000310

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

Guard, Sprocket C300000312
#2

Chain brake diagram

Guard, sprocket

Part #C300000312

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

Spacer, Piston Pin (2) 10001453630
#9

Engine/short bloc--sb1089 diagram

Spacer, piston pin (2)

Part #10001453630

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

Choke Return Spring P003000140
#7

Carburetor - wt-820 diagram

Choke return spring

Part #P003000140

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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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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Why does my chainsaw run roughly?

Main causes: bad gas, engine needs tune up, cracked fuel lines, dirty carburetor…

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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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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 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
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

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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