Yamaha YFM450FAR Service Manual page 11

CRANKCASE .............................................................................................. 4-56
STARTER MOTOR, TIMING CHAIN AND OIL FILTER ...................... 4-56
CRANKCASE ...................................................................................... 4-58
CRANKCASE BEARING ..................................................................... 4-59
REMOVING THE OIL PUMP DRIVE GEAR ....................................... 4-60
SEPARATING THE CRANKCASE ...................................................... 4-60
CHECKING THE TIMING CHAIN AND GUIDE ................................... 4-61
CHECKING THE OIL STRAINER AND OIL DELIVERY PIPE ............ 4-61
CHECKING THE CRANKCASE .......................................................... 4-62
CHECKING THE BEARINGS .............................................................. 4-62
ASSEMBLING THE CRANKCASE ...................................................... 4-62
INSTALLING THE SHIFT LEVER ....................................................... 4-63
INSTALLING THE OIL PUMP DRIVE GEAR ...................................... 4-64
CRANKSHAFT AND OIL PUMP ................................................................ 4-65
OIL PUMP ........................................................................................... 4-66
REMOVING THE CRANKSHAFT ....................................................... 4-67
CHECKING THE OIL PUMP ............................................................... 4-67
CHECKING THE CRANKSHAFT ........................................................ 4-68
INSTALLING THE CRANKSHAFT AND BALANCER ......................... 4-69
TRANSMISSION ......................................................................................... 4-70
CHECKING THE SHIFT FORK ........................................................... 4-72
CHECKING THE SHIFT CAM ............................................................. 4-72
CHECKING THE TRANSMISSION ..................................................... 4-73
CHECKING THE SECONDARY SHAFT
AND DRIVEN SPROCKET .............................................................. 4-73
CHECKING THE CHAIN ..................................................................... 4-74
CHECKING THE STOPPER LEVER AND STOPPER WHEEL .......... 4-74
INSTALLING THE TRANSMISSION ................................................... 4-74
MIDDLE GEAR ........................................................................................... 4-76
MIDDLE DRIVE SHAFT ...................................................................... 4-76
MIDDLE DRIVEN SHAFT .................................................................... 4-77
REMOVING THE MIDDLE DRIVE SHAFT ......................................... 4-79
REMOVING THE MIDDLE DRIVEN SHAFT ....................................... 4-79
CHECKING THE PINION GEAR ......................................................... 4-81
SELECTING THE MIDDLE DRIVE AND DRIVEN GEAR SHIM ......... 4-82
INSTALLING THE MIDDLE DRIVEN SHAFT ..................................... 4-85
INSTALLING THE MIDDLE DRIVE SHAFT ........................................ 4-87
MEASURING THE MIDDLE GEAR BACKLASH ................................. 4-87
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