Engine - Yamaha MBK MW125 2014 Service Manual

ENGINE INSPECTION .................................................................................... 5-1
MEASURING THE COMPRESSION PRESSURE....................................5-1
ENGINE REMOVAL ........................................................................................5-3
INSTALLING THE ENGINE....................................................................... 5-7
INSTALLING THE EXHAUST PIPE AND MUFFLER................................5-8
CYLINDER HEAD............................................................................................ 5-9
REMOVING THE CYLINDER HEAD.......................................................5-12
CHECKING THE CYLINDER HEAD .......................................................5-12
CHECKING THE CAMSHAFT SPROCKET............................................5-13
CHECKING THE TIMING CHAIN TENSIONER...................................... 5-13
INSTALLING THE CYLINDER HEAD .....................................................5-14
CAMSHAFT ................................................................................................... 5-17
REMOVING THE CAMSHAFT ................................................................5-18
CHECKING THE CAMSHAFT.................................................................5-18
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........ 5-18
INSTALLING THE CAMSHAFT AND ROCKER ARMS .......................... 5-19
VALVES AND VALVE SPRINGS.................................................................. 5-21
REMOVING THE VALVES...................................................................... 5-22
CHECKING THE VALVES AND VALVE GUIDES ..................................5-22
CHECKING THE VALVE SEATS ............................................................ 5-24
CHECKING THE VALVE SPRINGS........................................................ 5-25
INSTALLING THE VALVES .................................................................... 5-26
CYLINDER AND PISTON.............................................................................. 5-28
REMOVING THE PISTON ...................................................................... 5-29
CHECKING THE CYLINDER AND PISTON ...........................................5-29
CHECKING THE PISTON RINGS........................................................... 5-30
CHECKING THE PISTON PIN ................................................................5-31
CHECKING THE TIMING CHAIN GUIDE (EXHAUST SIDE) ................. 5-31
INSTALLING THE PISTON AND CYLINDER .........................................5-31

ENGINE

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