1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Manual, P/N 507265, Page 14Get this manual
Engine Specifications
40,50SPl,50
Operation Full Throttle Operating Range Power Power Rated Idle RPM in Gear Test Propeller Minimum Test RPM Weight 4500 to 5500 RPM 4040 HP (29,8 kw) 50SPL, 5050 HP (37,0 kw) 5000 RPM 800 25 OMC PIN 432968 404900 50SPL, 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)