2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 40Get this manual
Maintenance specification Item Crankcase Crankshaft journal oil clearance Upper and lower crankcase main journal bearing thickness(Blue)(Black)(Brown) Oil pump Type Outer rotor-to-housing clearance Outer rotor-to-inner rotor clearance Rotor-to-cover clearance Relief valve opening pressure Thermostat Opening temperature at 0.05 mm (0.0020 in) Fully open temperature Valve open lower limit Unit mm (in) Model F20PHF F20PRF
0.0110.039 (0.000430.00154)
mm (in) mm (in) mm (in)
1.5021.506 (0.05910.0593) 1.4981.502 (0.05900.0591) 1.4941.498 (0.05880.0590) Trochoid 0.090.15 (0.00350.0059) Within 0.12 (0.0047) 0.030.07 (0.00120.0028) 350450 (3.54.5, 50.865.3)