Yamaha Raptor 90 YFM90RA 2011 Service Manual page 10

ELECTRICAL SYSTEM................................................................................. 3-37
CHECKING AND CHARGING THE BATTERY....................................... 3-37
CHECKING THE FUSES.........................................................................3-44
ENGINE ...........................................................................................................4-1
EXHAUST PIPE/MUFFLER, BREATHER HOSE AND LEADS ................ 4-1
ENGINE MOUNTING BOLTS ...................................................................4-2
REMOVING THE ENGINE ........................................................................4-3
INSTALLING THE ENGINE....................................................................... 4-3
CYLINDER HEAD............................................................................................4-4
REMOVING THE CYLINDER HEAD.........................................................4-6
CHECKING THE CAMSHAFT SPROCKET..............................................4-7
CHECKING THE CYL. HEAD COVER ASSY............................................4-7
CHECKING THE TIMING CHAIN GUIDES............................................... 4-7
CHECKING THE TIMING CHAIN TENSIONER ASSEMBLY ................... 4-7
CHECKING THE CYLINDER HEAD .........................................................4-8
INSTALLING THE CYLINDER HEAD .......................................................4-9
CAMSHAFT, ROCKER ARMS AND VALVES.............................................. 4-11
REMOVING THE ROCKER ARMS AND CAMSHAFT............................ 4-12
REMOVING THE VALVES AND VALVE SPRINGS ...............................4-12
CHECKING THE CAMSHAFT.................................................................4-13
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........ 4-13
CHECKING THE VALVES AND VALVE SPRINGS ................................4-15
INSTALLING THE VALVES AND VALVE SPRINGS ..............................4-19
INSTALLING THE CAMSHAFT AND ROCKER ARMS ..........................4-20
CYLINDER AND PISTON.............................................................................. 4-21
REMOVING THE PISTON ......................................................................4-22
CHECKING THE CYLINDER AND PISTON ...........................................4-22
CHECKING THE PISTON RINGS........................................................... 4-24
CHECKING THE PISTON PIN ................................................................4-25
INSTALLING THE PISTON .....................................................................4-26
INSTALLING THE CYLINDER ................................................................4-27
C.D.I. MAGNETO........................................................................................... 4-28
REMOVING THE C.D.I. MAGNETO ROTOR .........................................4-29
CHECKING THE PICKUP COIL/STATOR ASSEMBLY.......................... 4-29
INSTALLING STATOR COIL ASSEMBLY
INSTALLING THE C.D.I. MAGNETO ROTOR ........................................ 4-30
CHAPTER 4
ENGINE
............................................ 4-30