1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 16Get this manual
Engine Specifications 40RS CommOperation Full Throttle Operating Range Power Power Rated Idle RPM in Gear Test Propeller Minimum Test RPM Weight 4500 to 5500 RPM 40 HP (29,8 kw) 5000 RPM 800 25
OMC PIN 432968
5200180 Ibs(81,1 kg)185 Ibs(84 kg)188 Ibs(86 kg)
Powerhead _
Type Displacement Bore Stroke Standard BoreCrankshaft Dimensions: Top Journal Center Journal Bottom Journal Rod Crankpin Piston Diameter, Standard Piston Ring End Gap, Both Piston Ring Groove Side Clearance, Lower 1.4986-1.4991 in(38,06-38,08 mm) 1.3745-1.3749 in(34,91-34,92 mm) 1.1810-1.1815 in(30,00-30,01 mm) 1.1823-1.1828 in(30,03-30,04 mm) See Section 0.007-0.017 in(0,18-0,43 ri1m) 0.004 in(0,10 mm) maximum In-line 2-Cylinder 45 cuin(737 cm3.1875 in(80,96 mm) 2.820 in(71,63 mm) 3.1870-3.1880 in(80,95-80,98 mm)