1987 Johnson Evinrude "CD" Colt/Junior thru 55 Commercial service repair manual, P/N 507546, Page 273Get this manual
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Crankcase and Cylinder Block
final torque of 144-168 inIbs(1619 Nm), starting with the center screwsTighten the smaller crankcase screws to torque of 60-84 inIbs(7-9 Nm)of new upper main