2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 25Get this manual
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Specification
kW (HP) rmin (US gal, Imp gal)hr rmin
11.0 (15) at 5,500 rmin
14.7 (20) at 5,500 rmin
5,0006,000 5.4 (1.4, 1.2) at 6.8 (1.8, 1.5) at 5