General Specifications
HP / kW 90 HP / 67.0 kW
Displacement 2100 cc (128.2 cu in.)
Cylinders 4 (Inline)
WOT RPM Range Check Manual
Bore x Stroke 90 x 81 mm
Weight (Lightest) 163 kg / 359 lbs
Drive & Lower Unit
Gear Ratio 2.07:1
Shaft Options 20", 25"
Propeller Style —
Maintenance Quick-Specs
Engine Oil Mercury 10W-30
Oil Capacity 5.2 Liters
Gear Lube 800 ml
Spark Plug NGK ZFR5F
Fuel/Power Regular 87 Oct
Identification
The serial number for the Mercury 90hp EFI (2.1L) is typically found on a plate located on the transom bracket.