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Thread: Replace Valve

  1. #1
    Member fredzaha's Avatar
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    Mar 2013
    Posts
    36
    My intake valve has beet eaten away by the valve screw because the previous owner never adjusted them.

    Now I have to replace them.



    I bought all the parts I needed.



    I just need tips and help on how I can replace the existing intake valve with a new one.



    I took out the motor already.



    Do I need to take off the head?

    Are there any pieces I should look out for?

  2. #2
    Senior Member atleastbehandy's Avatar
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    Apr 2011
    Location
    Toronto, Canada
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    250
    You don't need to remove the engine. A valve job can be done on the bike.



    Get the shop manual. You can download it from one of the sticky threads.



    Head removal summary:

    1. Disconnect exhaust, carburetor, top engine mount/throttle cable hanger, and spark plug wire

    2. Remove cam chain adjuster

    3. Remove cam access door

    4. Rotate engine to tdc and mark the cam chain at the top

    5. Remove cam sprocket - you will need to access the crank bolt via the small access port in the side cover to hold the crank

    6. Zip tie / bungie cord the cam chain so it stays taught

    7. Remove the two Allen head cap screws from the cam side of the head

    8. Remove the four head bolts

    9. Remove the head



    Valve time!

    1. Remove the two valve access doors

    2. Remove both valve adjustment screws

    3. Remove the cam bushing retainer screws and retainer - you will need to flatten the tabs

    4. Remove the cam - it will come straight out with the bushing

    5. Compress the valve springs

    6. Carefully Tap the valves until they come out of the valve spring retainer. There are two half-circle wedges that hold the valve in the valve spring retainer. Don't lose them! They bounce away like a super ball!

    7. Remove the valve from the guide.



    Reverse the procedure to reinstall. Notes:

    Small needle nose pliers facilitate holding the valve spring retainer wedges.

    Adjusting the valves can be done while the head is off the engine

    Be careful that the cam chain guides are aligned properly when replacing the head.
    2005 TW200, 2" PowerMadd bar riser, Tusk D-Flex Hand Guards, PowerMadd Hand Muffs, Kick-Start, Valco Cup Holder, Givi E45N Top Case, Inline fuel filter, Storage Tube with MSR bottle, 45 Tooth sprocket, Stebel Low Tone horn, #130 Main Jet / no needle shims / 1.5 turns out on idle, Jimbo Shield, DID O-Ring chain, Clarke XT250 4.1 Gal tank, Custom Cycleracks

  3. #3
    Member fredzaha's Avatar
    Join Date
    Mar 2013
    Posts
    36
    thanks

    Ill try it today and let you know how it goes.

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