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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Browse Parts for
CS-400 Chainsaws
Wrench, W/screwdriver X602000020
#2

Tools diagram

Wrench, w/screwdriver

Part #X602000020

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

Bolt V203000220
#8

Exhaust diagram

Bolt

Part #V203000220

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

Lid P021007153
#2

Cylinder cover/ignition switch diagram

Lid

Part #P021007153

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

Heat Deflector V341000050
#26

Handle/throttle control/engine cover diagram

Heat deflector

Part #V341000050

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

Washer 17721403930
#13

Chain brake diagram

Washer

Part #17721403930

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

! 1 (spanish: + 1) N/P
! 1 (spanish: + 1)

Part #N/P

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

Piston Pin V607000000
#6

Engine/short bloc--sb1089 diagram

Piston pin

Part #V607000000

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

Spring V452000220
#7

Starter diagram

Spring

Part #V452000220

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

Check Valve 43611413930
#25

Handle/throttle control/engine cover diagram

Check valve

Part #43611413930

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: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

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

Main causes: stale gasoline, cracked fuel lines, dirty carburetor, damaged spark plug, worn piston rings…

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 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
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

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.…