Yamaha XT660R(S) Automobile User Manual


 
ENG
CHAPTER 5
ENGINE
ENGINE REMOVAL
........................................................................................5-1
EXHAUST PIPES AND MUFFLERS .........................................................5-1
LEADS, CABLES, HOSES, AND IGNITION COIL ....................................5-2
ENGINE.....................................................................................................5-5
INSTALLING THE ENGINE.......................................................................5-7
CYLINDER HEAD
............................................................................................5-8
REMOVING THE CYLINDER HEAD.......................................................5-10
CHECKING THE CYLINDER HEAD .......................................................5-11
CHECKING THE TAPPET COVERS AND CAMSHAFT SPROCKET
COVER...................................................................................................5-12
CHECKING THE TIMING CHAIN TENSIONER......................................5-12
CHECKING THE CAMSHAFT SPROCKET............................................5-12
INSTALLING THE CYLINDER HEAD .....................................................5-12
ROCKER ARMS AND CAMSHAFT
..............................................................5-16
REMOVING THE ROCKER ARMS AND CAMSHAFT............................5-18
CHECKING THE CAMSHAFT.................................................................5-18
CHECKING THE DECOMPRESSION SYSTEM.....................................5-19
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........5-20
INSTALLING THE CAMSHAFT AND ROCKER ARMS ..........................5-21
VALVES AND VALVE SPRINGS
..................................................................5-23
REMOVING THE VALVES......................................................................5-24
CHECKING THE VALVES AND VALVE GUIDES ..................................5-25
CHECKING THE VALVE SEATS ............................................................5-27
CHECKING THE VALVE SPRINGS........................................................5-29
INSTALLING THE VALVES ....................................................................5-30
CYLINDER AND PISTON
..............................................................................5-32
REMOVING THE CYLINDER AND PISTON...........................................5-34
CHECKING THE CYLINDER AND PISTON ...........................................5-34
CHECKING THE PISTON RINGS...........................................................5-36
CHECKING THE PISTON PIN ................................................................5-37
INSTALLING THE PISTON AND CYLINDER .........................................5-38