2004-2005 660 Yamaha Rhino Factory Service Manual, Page 150Get this manual
CAMSHAFT AND CYLINDER HEAD
bRemoving the screwdriver and slowly release the timing chain tensioner rodcMake sure that the timing chain tensioner rod comes out of the timing chain tensioner housing smoothlyIf there is rough movement, replace the timing chain tensionerLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL