sorry, I overlooked that last question . For making good I assembled a little how to check the NX250 cam chain tensionerPetrus hat geschrieben: ↑Di Jul 18, 2017 3:49 pmOne more question, that may be caused by my defective “english knowledge” when watching the manual:
After remove valve cover and remove the cam chain tensioner to test if it works ok (lifter operation) at the end I don’t have to left the rod locks in the retracted position, right? So, how many turns on anticlockwise will I do? The same that I did before on clockwise direction?
First, check the tensioner tip - there is often breakage due to some previous owner. Then try to push the rod backwarts. You may turn the rod backwarts a bit and try pushing backwarts again - to be on the safe side you may repeat that until the rod is fully retracted.
But this is of course only a static test, if the cam chain is worn out its vibrations will turn the rod mechanism backwarts, the cam chain loosened and starts to rattle - in this case mass out's fix is the solution (unless you change the cam chain)