Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 122Get this manual
POWR Valve guide replacement 5-18 Valve seat refacing 5-19 Valve seat cutting guidelines5-19 Valve lapping .5-20 Valve installation .5-21 THERMOSTAT .5-22 EXPLODED DIAGRAM 5-22 REMOVAL AND INSTALLATION CHART5-22 SERVICE POINTS.5-23 Thermostat inspection 5-23 Anode inspection.5-23 BREATHER VALVE 5-24 EXPLODED DIAGRAM 5-24 REMOVAL AND INSTALLATION CHART5-24 SERVICE POINTS.5-25 Breather valve inspection .5-25 Breather route inspection .5-25 CRANKCASE AND CAMSHAFT .5-26 EXPLODED DIAGRAM 5-26 REMOVAL AND INSTALLATION CHART5-26 CRANKSHAFT AND CYLINDER BODY 5-27 EXPLODED DIAGRAM 5-27 REMOVAL AND INSTALLATION CHART5-27 OIL SPLASHER GEAR AND OIL SEAL HOUSING.5-28 EXPLODED DIAGRAM 5-28 REMOVAL AND INSTALLATION CHART5-28 CONNECTING ROD AND PISTON .5-29 EXPLODED DIAGRAM 5-29 REMOVAL AND INSTALLATION CHART5-29 SERVICE POINTS.5-30 Crankcase removal 5-30 Cylinder inspection5-30 Piston inspection .5-30 Piston-to-cylinder clearance .5-31 Piston pin inspection.5-31 Piston ring inspection .5-31 Crankshaft inspection5-32 Camshaft inspection5-32 Valve lifter inspection5-33 Oil splash gear inspection 5-34 Bearing inspection.5-34 Oil seal housing inspection 5-34 Crankcase inspection 5-34 Connecting rod oil clearance5-34