1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 7Get this manual
General Specification (continued) NOTE: Other specification (torques, etc are listed in the respective sectionsModel 100 Horsepower Idle RPM (in forward gear) Full Throttle RPM Range Piston Replacement Cylinder Bore Stroke Engine Type Ignition Type Recommended Spark Plug Cylinder Firing Order Recommended Power Trim Fluid Recommended Gasoline Recommended Oil Engine Weight ELO ELOPT 100 (74.6 kw) 650700 47505250 105 (1720.9cc) 3.375 (85.7mm) 2.930 (74.4mm) Cylinder, Cycle C.DBreakerless NGK-BPH8H-N-10 Gap0.040 in(1.0mm) Inductor Plug NGK BPZ 8H-N-10 Gap0.040 in(1.0mm) NGK-BUHW 1-3-2-4 Quicksilver Power TrimSteering Fluid or Automotive Transmission Fluid (ATF) Type F, FA or Dexron II Regular Leaded, Premium, Low-Lead and Lead-Free automotive gasolines with minimum pump posted octane rating of 86 Quicksilver 2-Cycle Outboard Oil 340 lbs360 lbs6.6 U.SGallons (5 ImpGals 25 Liters) 22.5 floz(665.2ml) 80:1 50:1 2.07:1 1.4 gal(5.3 liters) hours qt(.95 liter) 50 minapproxModel 115 115 (85.8 kw)