General Specifications
HP / kW 40 HP / 29.8 kW
Displacement 592 cc (36.1 cu in.)
Cylinders 2 (Inline)
WOT RPM Range Check Manual
Bore x Stroke 78 x 62 mm
Weight (Lightest) 72 kg / 159 lbs
Drive & Lower Unit
Gear Ratio 2.00:1
Shaft Options 15, 20
Propeller Style 11–13"
Maintenance Quick-Specs
Engine Oil 50:1 Pre-mix
Oil Capacity See Manual
Gear Lube See Manual
Spark Plug Check Search
Fuel/Power Regular Unleaded 87 Oct
Identification
The serial number for the Mariner 40hp (Yamaha-built 6E9) is typically found on a plate located on the transom bracket.