1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 14Get this manual
Engine Specifications 40,48,50 Operation Full Throttle Operating Range Power 4500 to 5500 RPM
4040 HP (29,8 kw) 4848 HP (35,8 kw) 5050 HP (37,0 kw)
5000 RPM 800 25
Power Rated Idle RPM in Gear Test Propeller Minimum Test RPM Weight
OMC PIN 432968 404900 48,505200
R, E, TE180 Ibs(81,1 kg) RL, EL, TL, TEL185 Ibs(84,0 kg)
Powerhead _Type Displacement Bore Stroke Standard Bore In-line 2-Cylinder 45 cuin(737 cm3.1875 in(80,96 mm) 2.820 in(71,63 mm)