2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 27Get this manual
SPECIAL TOOLS AND SERVICE SPECIFICATIONS TECHNICAL DATA
TECHNICAL DATA
HP Full Throttle Operating Range RPM Power Idle RPM in Gear Weight Lubrication 40,50 4500-5500 40 HP (29.8 kw) 5000 RPM 50 HP (37.0 kw) 5000 RPM 800 25 40R Models: 195 Ibs(88 kg) 40RL, 4050 PL Models: 202 Ibs(92 kg)
EvinrudeJohnson XD30 formula outboard oil Refer to Engine Lubricant on p51
Engine Type Displacement Bore Stroke Standard Bore Top Crankshaft Journal Center Crankshaft Journals Bottom Crankshaft Journal Rod Crankpin Piston Ring End Gap, Both Test Propeller FuellOil Ratio Carburetion Calibration Low-Speed Setting Starting Enrichment
In-line cylinder 45 cuin(737 cm3.1875 in(80.96 mm) 2.820 in(71.63 mm) 3.1870 to 3.1880 in(80.95 to 80.98 mm) To bore oversize, add piston oversize dimension to standard bore1.4986 to 1.4991 in(38.06 to 38.08 mm) 1.3745 to 1.3749 in(34.91 to 34.92 mm) 1.1810 to 1.1815 in(30.00 to 30.01 mm) 1.1823 to 1.1828 in(30.03 to 30.04 mm) 0.019 to 0.031 in(0.48 to 0.79 mm) PIN 432968