2001 Yamaha YFM660 Raptor Factory Service Manual, Page 191Get this manual
CYLINDER HEAD COVER
CHECKING THE TAPPET COVER 1.Check: Tappet cover (intake) Tappet cover (exhaust) O-ring New
INSTALLING THE CYLINDER HEAD COVER 1.Apply: Sealant (Quick Gasket(to the mating surfaces of the cylinder head and cylinder head cover) Sealant (Quick Gasket) 1: PNACC-11001-05-01 Yamaha bond No1215: PN90890-85505 2.Install: Cylinder head cover Cable guides Washers 10 Nm (1.0 kg, 7.2 ft lb) Bolts