Yamaha F30B 2018 Service Manual page 155

Replacing the valve guide ........................................................ 7-34
Checking the valve seat ........................................................... 7-36
Refacing the valve seat ............................................................ 7-36
Checking the rocker arm and rocker arm shaft ........................ 7-39
Checking the camshaft............................................................. 7-40
Checking the spark plug........................................................... 7-40
Checking the cylinder head anode ........................................... 7-41
Assembling the cylinder head .................................................. 7-41
Exhaust cover................................................................... 7-44
Removing the exhaust cover.................................................... 7-45
Removing the oil filter............................................................... 7-45
Checking the exhaust cover anode .......................................... 7-46
Checking the thermostat .......................................................... 7-46
Installing the oil filter................................................................. 7-46
Installing the thermo sensor ..................................................... 7-47
Installing the exhaust cover...................................................... 7-47
Cylinder block .................................................................. 7-49
Disassembling the cylinder block ............................................. 7-50
Checking the piston diameter................................................... 7-51
Checking the cylinder bore....................................................... 7-51
Checking the piston clearance ................................................. 7-52
Checking the piston ring........................................................... 7-52
Checking the piston ring end gap............................................. 7-52
Checking the piston ring groove............................................... 7-53
Checking the piston ring side clearance................................... 7-53
Checking the piston pin boss inside diameter .......................... 7-54
Checking the piston pin diameter ............................................. 7-54
Checking the connecting rod small end inside diameter and
big end inside diameter ............................................................ 7-54
Checking the connecting rod big end side clearance............... 7-55
Checking the crankshaft........................................................... 7-55
Checking the big end oil clearance .......................................... 7-56
Selecting the crankshaft pin bearing ........................................ 7-57
Checking the journal oil clearance ........................................... 7-58
Selecting the crankshaft journal bearing .................................. 7-59
Assembling the cylinder block .................................................. 7-60
Power unit
7