Engine - Yamaha YZF-R25 Service Manual

ENGINE INSPECTION .................................................................................... 5-1
MEASURE THE COMPRESSION PRESSURE........................................ 5-1
ENGINE REMOVAL ........................................................................................5-3
INSTALLING THE ENGINE....................................................................... 5-8
ASSEMBLING THE MUFFLER .................................................................5-9
INSTALLING THE EXHAUST PIPE AND MUFFLER ASSEMBLY ...........5-9
CAMSHAFTS.................................................................................................5-11
REMOVING THE CAMSHAFTS..............................................................5-13
CHECKING THE CAMSHAFTS ..............................................................5-14
CHECKING THE CAMSHAFT SPROCKETS .........................................5-15
CHECKING THE TIMING CHAIN TENSIONER...................................... 5-16
INSTALLING THE CAMSHAFTS ............................................................ 5-16
INSTALLING THE CYLINDER HEAD COVER ....................................... 5-20
CYLINDER HEAD.......................................................................................... 5-21
REMOVING THE CYLINDER HEAD.......................................................5-24
CHECKING THE TIMING CHAIN GUIDE (EXHAUST SIDE) ................. 5-24
CHECKING THE CYLINDER HEAD .......................................................5-24
INSTALLING THE CYLINDER HEAD .....................................................5-24
VALVES AND VALVE SPRINGS.................................................................. 5-26
REMOVING THE VALVES...................................................................... 5-27
CHECKING THE VALVES AND VALVE GUIDES ..................................5-27
CHECKING THE VALVE SEATS ............................................................ 5-29
CHECKING THE VALVE SPRINGS........................................................ 5-30
CHECKING THE VALVE LIFTERS ......................................................... 5-31
INSTALLING THE VALVES .................................................................... 5-31
CYLINDER AND PISTONS ...........................................................................5-34
REMOVING THE PISTONS .................................................................... 5-35
CHECKING THE CYLINDERS AND PISTONS ...................................... 5-35
CHECKING THE PISTON RINGS........................................................... 5-36
CHECKING THE PISTON PINS..............................................................5-37
INSTALLING THE PISTONS AND CYLINDER....................................... 5-37
GENERATOR AND STARTER CLUTCH......................................................5-40
REMOVING THE GENERATOR ............................................................. 5-42
REMOVING THE STARTER CLUTCH ...................................................5-42
CHECKING THE STARTER CLUTCH ....................................................5-42
INSTALLING THE STARTER CLUTCH .................................................. 5-43
INSTALLING THE GENERATOR............................................................ 5-44

ENGINE

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