1988-1992 Mercury Force 5HP Outboards Service Manual, Page 6Get this manual
SPECIFICATIONS H.PB.I.AH.PI.S.0 POWER RECOMMENDED OPERATING RANGE IDLE RPM IN GEAR ENGINE TYPE BORE and STROKE DISPLACEMENT COMPRESSION SPARK PLUG SPARK PLUG GAP POINT GAP TIMING WIDE OPEN THROTTLE
1988, 1989
5 H.P5250 RPM 3.5 kW 5250 RPM 4750-5750 RPM 800-1,000 RPM Two cycle, one cyl inder 2.0 1.59 in (50.8 39.0 mm) 5.00 cu in(82cc) 110-125 PSI (758.42-861.83 kPa) L87YC 0.030 in(0.76 mm) 0.020 in(0.51 mm) Not adjustable
1990, 1991, 1992
5 H.P6000 RPM 3.73 kW 6000 RPM 5500-6500 RPM 800-1,000 RPM Two cycle, one cylinder 2.125 1.584 in (54.0 40.2 mm) 5.6 cuin (92cc) 110-125 PSI (758.42-861 .83 kPa) Champion L87YC 0.030 in(0.76 mm) NA Not adjustable