Eng - Yamaha MIO Service Manual

REMOVING THE ENGINE............................................................................... 4-1
ENGINE OIL .............................................................................................. 4-1
COVERS ...................................................................................................4-1
CARBURETOR ......................................................................................... 4-1
MUFFLER..................................................................................................4-2
CABLE AND HOSE ................................................................................... 4-2
REAR SHOCK ABSORBER ASSEMBLY BOLT ....................................... 4-3
ENGINE ASSEMBLY ................................................................................ 4-3
INSTALLING THE ENGINE.............................................................................4-4
ENGINE ASSEMBLY ................................................................................ 4-4
REAR SHOCK ABSORBER ASSEMBLY BOLT ....................................... 4-4
CABLE AND HOSE ................................................................................... 4-4
MUFFLER..................................................................................................4-5
CARBURETOR ......................................................................................... 4-6
COVERS ...................................................................................................4-6
ENGINE OIL .............................................................................................. 4-6
CYLINDER HEAD............................................................................................ 4-7
REMOVING THE CYLINDER HEAD.........................................................4-8
CHECKING THE CYLINDER HEAD .......................................................4-11
CHECKING THE TIMING CHAIN GUIDE ............................................... 4-12
CHECKING THE TIMING CHAIN TENSIONER...................................... 4-12
INSTALLING THE CYLINDER HEAD .....................................................4-12
CAMSHAFT ................................................................................................... 4-17
REMOVING THE ROCKER ARMS AND CAMSHAFT............................ 4-18
CHECKING THE CAMSHAFTS ..............................................................4-19
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........ 4-20
CHECKING THE CAMSHAFT SPROCKET............................................4-21
CHECKING THE TAPPET COVERS
AND CAMSHAFT SPROCKET COVER................................................. 4-21
INSTALLING THE CAMSHAFTS AND ROCKER ARMS........................ 4-21
VALVES AND VALVE SPRINGS.................................................................. 4-23
REMOVING THE VALVES...................................................................... 4-24
CHECKING THE VALVES AND VALVE GUIDES ..................................4-25
CHECKING THE VALVE SEATS ............................................................ 4-27
CHECKING THE VALVE SPRINGS........................................................ 4-29
INSTALLING THE VALVES .................................................................... 4-30
CHAPTER 4
ENGINE

ENG