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ENGINE

ENGINE REMOVAL .........................................................................................5-1

REMOVING THE SILENCER.....................................................................5-6

REMOVING THE EXHAUST PIPE 2..........................................................5-6

REMOVING THE DRIVE SPROCKET .......................................................5-6

REMOVING THE ENGINE .........................................................................5-7

CHECKING THE SILENCER AND EXHAUST PIPE..................................5-7

CHANGING THE SILENCER FIBER .........................................................5-7

INSTALLING THE ENGINE........................................................................5-8

INSTALLING THE BRAKE PEDAL ............................................................5-9

INSTALLING THE DRIVE SPROCKET......................................................5-9

INSTALLING THE EXHAUST PIPE AND MUFFLER...............................5-10

CAMSHAFT....................................................................................................5-11

REMOVING THE CAMSHAFT .................................................................5-13

CHECKING THE CAMSHAFT..................................................................5-14

CHECKING THE TIMING CHAIN AND CAMSHAFT SPROCKET ..........5-15

CHECKING THE TIMING CHAIN TENSIONERS ....................................5-15

CHECKING THE DECOMPRESSION SYSTEM......................................5-16

INSTALLING THE CAMSHAFTS .............................................................5-16

CYLINDER HEAD...........................................................................................5-19

REMOVING THE CYLINDER HEAD........................................................5-21

CHECKING THE TIMING CHAIN GUIDE (INTAKE SIDE) ......................5-21

CHECKING THE CYLINDER HEAD ........................................................5-21

INSTALLING THE CYLINDER HEAD ......................................................5-22

VALVES AND VALVE SPRINGS...................................................................5-24

REMOVING THE VALVES.......................................................................5-25

CHECKING THE VALVES AND VALVE GUIDES ...................................5-26

CHECKING THE VALVE SEATS .............................................................5-27

CHECKING THE VALVE SPRINGS.........................................................5-29

CHECKING THE VALVE LIFTERS ..........................................................5-29

INSTALLING THE VALVES .....................................................................5-30

CYLINDER AND PISTON...............................................................................5-32

REMOVING THE PISTON .......................................................................5-33

CHECKING THE CYLINDER AND PISTON ............................................5-33

CHECKING THE PISTON RINGS............................................................5-34

CHECKING THE PISTON PIN .................................................................5-35

INSTALLING THE PISTON AND CYLINDER ..........................................5-35

Yamaha YZ450FV User Manual

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