General Specifications
HP / kW 90 HP / 67.0 kW
Displacement 1832 cc (111.8 cu in.)
Cylinders 4 (Inline)
WOT RPM Range Check Manual
Bore x Stroke 81 x 88.9 mm
Weight (Lightest) 160 kg / 353 lbs
Drive & Lower Unit
Gear Ratio 2.15:1
Shaft Options 20, 25
Propeller Style 13–15"
Maintenance Quick-Specs
Engine Oil Yamalube 4-Stroke
Oil Capacity 3.2 Liters
Gear Lube 670 ml
Spark Plug NGK LFR6A-11
Fuel/Power Regular Unleaded 87 Oct
Identification
The serial number for the Yamaha F90 In-Line Four is typically found on a plate located on the transom bracket.