1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 151Get this manual
CYLINDER HEAD AND OIL PUMP
CYLINDER HEAD AND OIL PUMP
EXPLODED DIAGRAM
1st 22.6 Nm (2.3 kg, 16.7 ft Ib) 2nd 46.1 Nm (4.7 kg, 34.0 ft Ib)
1st 6.0 Nm (0.6 kg, 4.4 ftIb) 2nd 11.8 Nm (1.2 kg, 8.7 ft .Ib) 25 mm (3)
17.2 Nm (1.7 kg, 12.6 ftIb)