Yamaha YFM25RSEY Automobile User Manual


 
5
ENGINE
ENGINE REMOVAL ......................................................................................5-1
INSTALLING THE ENGINE ....................................................................5-4
INSTALLING THE MUFFLER AND EXHAUST PIPE..............................5-4
CAMSHAFT ..................................................................................................5-6
REMOVING THE ROCKER ARMS AND CAMSHAFT ...........................5-7
CHECKING THE CAMSHAFT................................................................5-7
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS........5-8
INSTALLING THE CAMSHAFT AND ROCKER ARMS ..........................5-9
CYLINDER HEAD.......................................................................................5-10
REMOVING THE CYLINDER HEAD....................................................5-12
CHECKING THE CYLINDER HEAD ....................................................5-12
CHECKING THE TIMING CHAIN GUIDES ..........................................5-13
CHECKING THE TIMING CHAIN TENSIONER...................................5-13
INSTALLING THE CYLINDER HEAD...................................................5-14
VALVES AND VALVE SPRINGS ................................................................5-16
REMOVING THE VALVES....................................................................5-17
CHECKING THE VALVES AND VALVE GUIDES.................................5-17
CHECKING THE VALVE SEATS ..........................................................5-19
CHECKING THE VALVE SPRINGS......................................................5-21
INSTALLING THE VALVES...................................................................5-22
CYLINDER AND PISTON...........................................................................5-24
REMOVING THE PISTON....................................................................5-25
CHECKING THE CYLINDER AND PISTON.........................................5-25
CHECKING THE PISTON RINGS ........................................................5-26
CHECKING THE PISTON PIN .............................................................5-27
INSTALLING THE PISTON AND CYLINDER.......................................5-27
CLUTCH......................................................................................................5-29
REMOVING THE CLUTCH...................................................................5-32
CHECKING THE FRICTION PLATES ..................................................5-32
CHECKING THE CLUTCH PLATES.....................................................5-33
CHECKING THE CLUTCH SPRINGS..................................................5-33
CHECKING THE CLUTCH HOUSING .................................................5-33
CHECKING THE CLUTCH BOSS ........................................................5-33
CHECKING THE PRESSURE PLATE..................................................5-34
CHECKING THE CLUTCH PUSH RODS.............................................5-34
CHECKING THE PRIMARY DRIVE GEAR ..........................................5-34
INSTALLING THE CLUTCH..................................................................5-34
OIL PUMP...................................................................................................5-38
REMOVING THE OIL PUMP................................................................5-40
CHECKING THE OIL PUMP ................................................................5-40
CHECKING THE BALANCER WEIGHT GEAR....................................5-40