Yamaha Mio - Chapter 4: Engine

ENG
CHAPTER 4
ENGINE
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