Power Unit - Yamaha F30B 2018 Service Manual

Power unit (check and adjustment).................................. 7-1
Checking the compression pressure .......................................... 7-1
Checking the oil pressure........................................................... 7-1
Checking the pulser coil air gap ................................................. 7-2
Adjusting the pulser coil air gap ................................................. 7-2
Checking the valve clearance .................................................... 7-2
Adjusting the valve clearance..................................................... 7-5
Power unit assembly ......................................................... 7-6
Removing the power unit............................................................ 7-7
Installing the power unit.............................................................. 7-9
Flywheel magneto and timing belt ................................. 7-13
Removing the flywheel magneto .............................................. 7-14
Removing the timing belt and sprocket .................................... 7-15
Checking the timing belt and sprocket ..................................... 7-15
Installing the sprocket and timing belt ...................................... 7-16
Installing the stator assembly ................................................... 7-17
Installing the flywheel magneto ................................................ 7-18
Engine ECM, rectifier/regulator, and ignition coil ......... 7-19
Wire harness..................................................................... 7-20
Installing the wire harness........................................................ 7-21
Starter motor .................................................................... 7-24
Installing the starter motor........................................................ 7-25
Cylinder head ................................................................... 7-26
Removing the cylinder head..................................................... 7-27
Checking the cylinder head bolt ............................................... 7-28
Installing the cylinder head....................................................... 7-28
Camshaft and valve ......................................................... 7-30
Disassembling the cylinder head.............................................. 7-31
Checking the cylinder head ...................................................... 7-32
Checking the valve spring ........................................................ 7-33
Checking the valve ................................................................... 7-33
Checking the valve guide ......................................................... 7-34

Power unit