1971 Johnson 2HP outboards Service Manual, Page 10Get this manual
CLEARANCE CHART
Power head Piston ring gap .015 max- .005 min.0040 max- .0020 minPiston ringgroove .0055 max- .0043 minCylinder and piston Crankshaft Needle bearing Upper Needle bearing Lower Connecting rod Piston end .0011 max- .0004 minCrankshaft end Needle bearing 1L0wer unit Driveshaft and bushing in gear case .0028 max- .0010 minGearcase head and propeller shaft .0022 max- .0007 minPropeller on shaft .0057 max- .0022 min.0022 max- .0007 minGearcase bushing to propeller shaft
TORQUE CHART
Power head Flywheel nut 2225 foot-pounds Connecting rod screws 6066 inch-pounds Cylinder head screws 6080 inch-pounds Manifold to crankcase screws 6080 inch-pounds Bearing housing to cylinder screws 6080 inch-pounds Spark plug 17-120-1foot-pounds Lower unit Pull at propeller shaft to tilt up lower unit 1114 lbsCREW TORQUE Torque should be used on the following sizes unless otherwise specifiedtandard screws NoNoNoNo6 Inch-Pounds 7-10 15-22 25-35 35-40 60-80 120-140 220-240 Foot-Pounds 2-3 3-4 5-7 10-12 18-20