1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 236Get this manual
Installation 1On models with gearcase extension kit, make sure the driveshaft tube extension, water tube extension, and gearcase exhaust seals are in place 14612Coat the driveshaft splines with OMC Moly LubeDo not
coat top surface of the driveshaft as lubricant here may prevent seating of the driveshaft in the cranksh.aft
3Pull up on the shift rod and engage REVERSE gearMove the shift lever on the motor to REVERSE positionLightly apply OMC Triple-Guard grease to lower outside of the water tubeCarefully install the gearcase making sure the driveshaft splines engage the crankshaft, the water tube enters the impeller housing grommet, and the upper shift rod enters the shift rod connector5Align the groove in the lower shift rod with the screw hole in the connectorApply OMC Gasket Sealing Compound to shift rod connector screwInstall and tighten the screw with washer to torque of 60-84 inIbs(7-9 Nm)When installing gearcase to gearcase extension, do not tighten the retaining screws until the gearcase and the extension have been placed in proper position with the exhaust housing and powerhead assembly