Here are specs for the 2000 Johnson 40 horsepower boat motor:
Engine: In-Line
Displacement: 45 cu. inches
Bore/Stroke: 3.19" x 2.82"
Cylinders: 2
Fuel Induction: Carburetor
RPM: 4500-5500
Weight: 185 lbs
Gear Ratio: 2.42:1
Shaft: 15 inches