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simple valve adjustment question

Discussion in 'XJ Technical Chat' started by joejr2, Jul 30, 2020.

  1. joejr2

    joejr2 Active Member

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    I swapped shims on a 650 maxim last year. Now I'm doing a 650 seca.
    I forgot which way to rotate the crank shaft with the square nut on the timing rotor.
    Is it clockwise or counter clockwise ?
     
  2. Franz

    Franz Well-Known Member

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  3. Franz

    Franz Well-Known Member

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    If you are using the Yamaha tool be careful because the cam can crack the head if the cam lobe is turned toward the tool. The guide I posted covers the procedure.
     
  4. joejr2

    joejr2 Active Member

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    I use a 5/16" wide zip tie bent at the end and slipped under an
    open valve through the plug hole. It works well. I wrap a short length of duct tape around the bent end to make a non slip surface. To keep the tape from coming loose in the chamber, I secure one end to the zip tie with contact cement
    and apply a little to the wrapped end as well.
     
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  5. joejr2

    joejr2 Active Member

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  6. Franz

    Franz Well-Known Member

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    Turn the engine anticlockwise for all valves then since you are using zip ties.
     

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