Mercury Force 9.9, 15HP Outboards Service Manual, Page 6Get this manual
SPECIFICATIONS1988-1989 9.9 H.PB.I.AH .P1.5 .0POWER RECOMMENDED OPERATING RANGE
IDLE RPM IN GEAR
15 H.P155250RPM
9.9 5100 RPM 7.0 kW5100 RPM 4600-5600 RPM 600-700 RPM
10.6 kW 5250 RPM
4750-5750 RPM
600-700 RPM
Two cycle, two cylinder
ENGINE TYPE BORE and STROKE
DISPLACEMENT
Two cycle, two cylinder
2.25 1.94 in(57.1 49.2 mm)
15.41 cuin(252.5 eel
2.25 1.94 in(57.1 49.2 mm)
15.41 cu in (252.5 eel 125-135 PSI
(861 .8-930.7kPa) L-82C