2004-2005 660 Yamaha Rhino Factory Service Manual, Page 153Get this manual
CAMSHAFT AND CYLINDER HEAD
cWith the screwdriver still inserted into the timing chain tensioner, install the timing chain tensioner and gasket onto the cylinder blockThen, tighten the timing chain tensioner bolts to the specified torqueWARNING Always use new gasketNOTE: The "UP" mark on the timing chain tensioner should face upTiming chain tensioner bolt 10 Nm (1.0 kg, 7.2 ft lb)