Yamaha GRIZZLY Ultramatic YFM660FP, Service Manual

Page: 11 / 408

ROCKER ARMS ......................................................................................... 4-12
REMOVING THE ROCKER ARM ....................................................... 4-14
CHECKING THE ROCKER ARM ........................................................ 4-14
INSTALLING THE ROCKER ARM ...................................................... 4-15
CAMSHAFT AND CYLINDER HEAD ......................................................... 4-16
REMOVING THE CAMSHAFT AND CYLINDER HEAD ..................... 4-18
CHECKING THE CAMSHAFT ............................................................. 4-19
CHECKING THE CAMSHAFT SPROCKET ........................................ 4-19
CHECKING THE DECOMPRESSION SYSTEM ................................. 4-19
CHECKING THE TIMING CHAIN GUIDE ........................................... 4-20
CHECKING THE TIMING CHAIN TENSIONER .................................. 4-20
CHECKING THE CYLINDER HEAD ................................................... 4-20
INSTALLING THE CAMSHAFT AND CYLINDER HEAD .................... 4-21
VALVES AND VALVE SPRINGS ............................................................... 4-24
REMOVING THE VALVE AND VALVE SPRING ................................ 4-25
CHECKING THE VALVE AND VALVE SPRING ................................. 4-26
INSTALLING THE VALVE AND VALVE SPRING ............................... 4-30
CYLINDER AND PISTON ........................................................................... 4-32
REMOVING THE PISTON .................................................................. 4-33
CHECKING THE CYLINDER AND PISTON ....................................... 4-33
CHECKING THE PISTON RING ......................................................... 4-35
CHECKING THE PISTON PIN ............................................................ 4-36
INSTALLING THE PISTON ................................................................. 4-36
INSTALLING THE CYLINDER ............................................................ 4-37
RECOIL STARTER AND AC MAGNETO ................................................... 4-38
REMOVING THE AC MAGNETO ........................................................ 4-41
DISASSEMBLING THE RECOIL STARTER ....................................... 4-41
CHECKING THE AC MAGNETO ........................................................ 4-41
CHECKING THE STARTER CLUTCH ................................................ 4-42
CHECKING THE STARTER PULLEY ................................................. 4-43
CHECKING THE RECOIL STARTER ................................................. 4-43
ASSEMBLEING THE RECOIL STARTER .......................................... 4-43
INSTALLING THE AC MAGNETO ...................................................... 4-44
BALANCER GEARS AND OIL PUMP GEARS .......................................... 4-47
REMOVING THE BALANCER DRIVE GEAR
AND BALANCER DRIVEN GEAR ................................................... 4-48
REMOVING THE BALANCER DRIVE GEAR
AND BUFFER BOSS ....................................................................... 4-48
CHECKING THE OIL PUMP DRIVE ................................................... 4-48