1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Manual, P/N 507870, Page 15Get this manual
Engine Specifications 3BR
Operation Full Throttle Operating Range Power Power Rated Idle RPM in Gear Test Propeller Minimum Test RPM Weight 4500 to 5500 RPM 3.0 HP (2,2 kw) 5000 RPM 62525 RPM OMC PI 317738 4400 RPM 33 Ibs(15 kg)
Powerhead 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, Both 0.7515-0.7520 in(19,08-19,10 mm) .6685-0.6690 in(16,98-16,99 mm) 0.6691 -0.6695 in(17,00-17,01 mm) 0.6695-0.6700 in (17,00- 17,02 mm) 1.5625-1.5631 in(39,69-39,70 mm) 0.005-0.015 in(0,13-0,38 mm) .004 in(010 mm) maximum 5.28 cu in(87 cm1.565 in (39,7 mm) 1.374 in(34,9 mm) 1.5643-1.5650 in (39,74-39,75 mm)