1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 177Get this manual
EXPLODED DIAGRAM
17.5 Nm (1.8 m' kg, 12.9 ft Ib)
6.0 Nm (0.6 m' kg, 4.4 ft Ib) 2nd 12.0 Nm (1.2 m' kg, 8.9 ft .Ib) 35 mm (8)
ProcedurePart Gasket Breather cover Gasket Filter element