2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 138Get this manual
Cylinder head Clearance a: 0.090.15 mm (0.00350.0059 in) Clearance b: Within 0.12 mm (0.0047 in) Clearance c: 0.030.08 mm (0.00120.0031 in) 4Assemble the oil pump, and then tighten the oil pump screws to the specified torque C C