Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 261Get this manual
POWERHEAD
6Place center main crankshaft roller bearings on upper and lower main bearing journals as shown7Install center main bearing races as shown8Secure center main bearing races together with retaining ringsMake sure retaining ring bridges the separating lines of the bearing raceFLYWHEEL END
51850 DRIVE SHAFT END 51847
aCenter Main Bearing Races 9Install oil seals into lower end cap as follows: aApply thin bead of Loctite 271 to outer diameter on lower end cap oil seals (a)bUsing driver head (91-55919) press one oil seal (lip facing down) into lower end cap until firmly seatedRemove any excess LoctitecPress second oil seal (lip facing down) until firmly seated on first oil sealRemove any excess LoctitedLubricate oil seal lips with Quicksilver 2-4-C wTeflon (92-825407A12)eLubricate O-ring seal surface on end cap with cycle oilInstall O-ring over lower end cap7 14 95