General Specifications
HP / kW 20 HP / 14.9 kW
Displacement 432 cc (26.4 cu in.)
Cylinders 2 (Inline)
WOT RPM Range Check Manual
Bore x Stroke 65 x 65.1 mm
Weight (Lightest) 56 kg / 123 lbs
Drive & Lower Unit
Gear Ratio 2.08:1
Shaft Options 15, 20
Propeller Style 9–11"
Maintenance Quick-Specs
Engine Oil Yamalube 4-Stroke
Oil Capacity See Manual
Gear Lube See Manual
Spark Plug Check Search
Fuel/Power Regular Unleaded 87 Oct
Identification
The serial number for the Yamaha F20 Portable is typically found on a plate located on the transom bracket.