1988 Johnson Evinrude CC 60 thru 75 outboards Service Manual, Page 176Get this manual
32 Lightly coat new crankcase head O-ring with OMC Triple-Guard grease and install itInstall the crankcase headCoat the threaded portion of the crankcase head screws with OMC Gasket Sealing Compound and torque them to 96-120 inIbs(1114 Nm)
33Install intake manifold assembly with its gasket dry, use no sealerFor intake manifold servicing information, refer to Section 234Install the complete ignition, electrical, and fuel systems
To prevent possible fire or explosion, make sure all electrical and ignition wiring is routed and clamped in its original position