General Specifications
HP / kW 90 HP / 67.0 kW
Displacement 1140 cc (69.6 cu in.)
Cylinders 3 (Inline)
WOT RPM Range Check Manual
Bore x Stroke 82 x 72 mm
Weight (Lightest) 119 kg / 262 lbs
Drive & Lower Unit
Gear Ratio 2.00:1
Shaft Options 20
Propeller Style 13–15"
Maintenance Quick-Specs
Engine Oil Precision Blend Injection
Oil Capacity See Manual
Gear Lube 610 ml
Spark Plug NGK B7HS-10
Fuel/Power Regular Unleaded 87 Oct
Identification
The serial number for the Yamaha 90hp (3-Cyl 2-Stroke) is typically found on a plate located on the transom bracket.