Yamaha YP125R, Service Manual

Page: 242 / 498

STARTER CLUTCH AND GENERATOR (YP125R) ..................................... 5-39
REMOVING THE GENERATOR ............................................................. 5-41
REMOVING THE STARTER CLUTCH ................................................... 5-41
CHECKING THE STARTER CLUTCH .................................................... 5-41
INSTALLING THE STARTER CLUTCH .................................................. 5-42
INSTALLING THE GENERATOR............................................................ 5-42
ELECTRIC STARTER (YP125R) .................................................................. 5-44
CHECKING THE STARTER MOTOR ..................................................... 5-46
OIL PUMP (YP125R) ..................................................................................... 5-48
CHECKING THE OIL PUMP ................................................................... 5-49
ASSEMBLING THE OIL PUMP............................................................... 5-49
INSTALLING THE OIL PUMP ................................................................. 5-50
TRANSMISSION (YP125R) ........................................................................... 5-51
REMOVING THE TRANSMISSION ........................................................ 5-53
CHECKING THE TRANSMISSION ......................................................... 5-53
INSTALLING THE TRANSMISSION ....................................................... 5-53
CRANKSHAFT (YP125R) ............................................................................. 5-54
DISASSEMBLING THE CRANKCASE.................................................... 5-56
REMOVING THE CRANKSHAFT ASSEMBLY ....................................... 5-56
CHECKING THE TIMING CHAIN AND TIMING CHAIN GUIDE ............. 5-56
CHECKING THE CRANKSHAFT AND CONNECTING ROD ................. 5-56
CHECKING THE CRANKCASE .............................................................. 5-57
CHECKING THE BEARING AND OIL SEAL........................................... 5-57
CHECKING THE OIL PUMP DRIVE GEAR ............................................ 5-57
CHECKING THE OIL STRAINERS ......................................................... 5-58
INSTALLING THE CRANKSHAFT .......................................................... 5-58
ASSEMBLING THE CRANKCASE.......................................................... 5-59
ENGINE REMOVAL (YP250R) ...................................................................... 5-61
INSTALLING THE ENGINE..................................................................... 5-65
CYLINDER HEAD (YP250R) ......................................................................... 5-67
REMOVING THE CYLINDER HEAD....................................................... 5-69
CHECKING THE CYLINDER HEAD ....................................................... 5-69
CHECKING THE CAMSHAFT SPROCKET ............................................ 5-70
CHECKING THE TIMING CHAIN TENSIONER...................................... 5-70
INSTALLING THE CYLINDER HEAD ..................................................... 5-71
CAMSHAFT (YP250R) .................................................................................. 5-73
REMOVING THE ROCKER ARMS AND CAMSHAFT............................ 5-74
CHECKING THE CAMSHAFT................................................................. 5-74
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........ 5-75
INSTALLING THE CAMSHAFT AND ROCKER ARMS .......................... 5-75