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I have a 1989 cr125 and it has a brand new power valve set up in it. When i put the power valve in the cylinder head in the closed position (round side facing down) it hit the stopper bolt on the inside of the head and wont allow the power valve to rotate open. I took the linkage arm off of the power valve and rev'd the bike and the linkage arm pulled down as its supposed to. I dont no if im doing anything wrong but my bike is still bogging and has no top end power at all
 

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Bike off or low rpm valve open, as engine rpms increase valve shuts. I have service manual and can try to get some pictures/instructions on how to install properly..
 
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