Yamaha F15A Service Manual page 182

POWR
CYLINDER HEAD AND OIL PUMP .............................................................5-19
EXPLODED DIAGRAM ..........................................................................5-19
REMOVAL AND INSTALLATION CHART..............................................5-19
OIL PUMP ....................................................................................................5-21
EXPLODED DIAGRAM ..........................................................................5-21
REMOVAL AND INSTALLATION CHART..............................................5-21
SERVICE POINTS...................................................................................5-22
Cylinder head inspection ................................................................5-22
Oil pump inspection ........................................................................5-22
Oil pump assembly .........................................................................5-22
CAMSHAFT AND VALVES .........................................................................5-23
EXPLODED DIAGRAM ..........................................................................5-23
REMOVAL AND INSTALLATION CHART..............................................5-23
SERVICE POINTS...................................................................................5-25
Valve inspection...............................................................................5-25
Valve spring inspection...................................................................5-26
Rocker arm and rocker arm shaft inspection ....................................5-26
Camshaft inspection........................................................................5-27
Valve guide replacement ................................................................5-27
Valve seat refacing ..........................................................................5-28
Valve seat cutting guidelines..........................................................5-28
Valve lapping ...................................................................................5-30
Valve installation .............................................................................5-31
OIL FILTER, THERMOSTAT AND EXHAUST COVER ................................5-32
EXPLODED DIAGRAM ..........................................................................5-32
REMOVAL AND INSTALLATION CHART..............................................5-32
SERVICE POINTS...................................................................................5-34
Thermostat inspection ....................................................................5-34
Anode inspection.............................................................................5-34
CRANKCASE AND CRANKSHAFT ............................................................5-35
EXPLODED DIAGRAM ..........................................................................5-35
REMOVAL AND INSTALLATION CHART..............................................5-35
SERVICE POINTS...................................................................................5-38
Cylinder inspection..........................................................................5-38
Piston inspection .............................................................................5-38
Piston-to-cylinder clearance ...........................................................5-39
Piston pin inspection.......................................................................5-39
Piston ring inspection .....................................................................5-39
Crankshaft inspection......................................................................5-40
Crankshaft journal oil clearance.....................................................5-40
Connecting rod oil clearance..........................................................5-42
Piston ring installation ....................................................................5-44
Piston installation ............................................................................5-44
Oil seal installation ..........................................................................5-45
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