2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 37Get this manual
SPEC Power unit
Specification
Unit kPa (kgfcm2, psi) kPa (kgfcm2, psi) mm (in)
Model F20PHF 860 (8.6, 124.7) 400 (4.0, 58.0) at idle speed F20PRF
Power unit Minimum compression pressure(1) Oil pressure(2) Cylinder head Warpage limit
0.10 (0.0039)
(lines indicate straightedge position) Cylinder head journal inside diameter (A) Cylinder head journal inside diameter (B)
mm (in) mm (in)
22.00022.021 (0.86610.8670) 34.00034.025 (1.33861.3396)