1988-1995 Mercury Force 5HP Outboards Service Manual, 90-823263 793, Page 6Get this manual
SPECIFICATIONS H.PB.IA H.PI.S.0POWER RECOMMENDED OPERATING RANGE IDLE RPM IN GEAR ENGINE TYPE BORE and STROKE DISPLACEMENT COMPRESSION SPARK PLUG SPARK PLUG GAP
1988, 1989
5 H.P5250 RPM 3.5 kW 5250 RPM 4750-5750 800-1,000 RPM Two cycle, one cylinder 2.0 1.59 in(50.8 39.0 mm) 5.00 cuin(82cc) 110-125 PSI (758.42-861.83 kPa) L87YC 0.030 in (0.76 mm)
1990 and Newer
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) 0.040 in(1.01 mm) 1993 and newer models with SEM ignition system NA Not adjustable