2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 26Get this manual
General specification Item Maximum generator output Spark plug Cooling system Exhaust system Lubrication system Fuel and oil Fuel type Engine oil type Engine oil grade(1) Engine oil quantity (without oil filter replacement) (with oil filter replacement) Gear oil type Gear oil grade(2) Gear oil quantity Bracket unit Trim angle (at 12 boat transom) Tilt-up angle Steering angle Drive unit Gear shift positions Gear ratio Reduction gear type Clutch type Propeller shaft type Propeller direction (rear view) Propeller mark Electrical Battery minimum capacity CCASAE MCAABYC RCSAE Electrolyte specific gravity at 20 (68 F) (1)
Model F15EHF F20MHF 12, 10.0 DPR6EB-9 (NGK) Water Propeller boss Wet sump Regular unleaded gasoline 4-stroke motor oil SE, SF, SG, SH, SJ, or SL 5W-30, 10W-30, or 10W-40 1.6 (1.69, 1.41) 1.8 (1.90, 1.58) Hypoid gear oil GL-4 90 300 (10.14, 10.58)