Echo
Gas Chainsaw

Model #CS-400 Echo chainsaw

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

    Showing 10 of 212 parts

    Bulb#18

    Cylinder cover/ignition switch Diagram

    Bulb

    Part #12318139130

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

    Gas Line#23

    Cylinder cover/ignition switch Diagram

    Gas line

    Part #13200700760

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

    SPACER, PISTON PIN (2)#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

    Plug Cover#3

    Cylinder cover/ignition switch Diagram

    Plug cover

    Part #13033832430

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

    Roller#8

    Chain brake Diagram

    Roller

    Part #9305030098

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

    O-RING 22#40

    Cylinder cover/ignition switch Diagram

    O-ring 22

    Part #90072000022

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

    Exhaust Guide#3

    Exhaust Diagram

    Exhaust guide

    Part #A313000810

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

    FUEL CAP ASSEMBLY (INCLUDES ITEMS 11-12)#10

    Auto-oiler Diagram

    Fuel cap assembly (includes items 11-12)

    Part #P021007630

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

    Chain#19

    Chain brake Diagram

    Chain

    Part #C309000030

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

    CAP (2)

    See All Related Diagrams

    Cap (2)

    Part #10091815130

    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: 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

    Repair guides for gas chainsaws

    These step-by-step repair guides will help you safely fix what’s broken on your chainsaw.

    February 1, 2014
    By Lyle Weischwill
    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 rebuild it, using a carburetor rebuild kit. This repair guide takes you through the process.

    Repair difficulty
    Time required
     15 minutes or less
    February 1, 2014
    By Lyle Weischwill
    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 experience. These instructions show you how.

    Repair difficulty
    Time required
     15 minutes or less
    February 1, 2014
    By Lyle Weischwill
    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 easier to replace the carburetor than to clean it and rebuild it. Follow these steps to do the job yourself in about half an hour.

    Repair difficulty
    Time required
     15 minutes or less

    Articles and videos for gas chainsaws

    Use the advice and tips in these articles and videos to get the most out of your chainsaw.

    August 1, 2015

    How to cut trees, limbs and branches with a chainsaw

    By Jeff Day

    Learn tips for using a chainsaw to cut down trees, cut up fallen tree limbs and prune small branches.

    March 1, 2015

    How to replace a chainsaw oil pump video

    By Sears PartsDirect staff

    Oil leaking from your chainsaw often means the oil pump has failed. This video shows how to install a new chainsaw oil pump.

    March 1, 2015

    How to store a chainsaw between seasons

    By Sears PartsDirect staff

    Put away your chainsaw the right way so it's ready the next time you need firewood.