1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 154Get this manual
29Tighten the six main bearing screws in stages to final torque of 144-168 inIbs(16-19 Nm)Begin with the center screws and work outward in spiral patternTighten the smaller crankcase screws to torque of 60-84 inIbs(7-9 Nm)30Tighten the crankcase head screws to 60-84 in Ibs(7-9 Nm) 25 26
31Apply Permatex No2to the two ribs in the cylinder head next to thermostat water passage
32Lightly coat both sides of new cylinder head gasket with ONIC Gasket Sealing CompoundInstall the gasket and cylinder headTighten the cylinder head screws in stages to the final torque of 216-240 inIbs(24-27 Nm), following the sequence shownInstall the cylinder head screws dryDo not use sealant on threads33Install the thermostat assembly (and temperature switch, if equipped) in the cylinder head
34Install thermostat cover and O-ring Torque screws to 60-84 inIbs(7-9 Nm)
35Apply ONIC Gasket Sealing Compound to both sides of two new exhaust cover gasketsInstall the inner and outer exhaust coversTighten the screws to torque of 95-130 in Ibs(11-14 Nm), starting with the center screws