1971 Johnson 40HP outboards Service Manual, Page 62Get this manual
eApply light coat of Perfect Seal #4 to outside diameter of propeller shaft sealPress new seal into oil retainer housingAssemble detent spring and two bails to propeller shaft using OMC Needle Bearing Grease Part Number 378642Align notches in clutch dog with detent balls in propeller shaft, Figure 6-18ANOTE If notches in clutch dog appear off center, ro-
and tighten to torque specified in Section 2new "a" ring on upper end of driveshaftGEARCASE PRESSURE TEST To test gearcase sealing, proceed as follows;