Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 389Get this manual
RIGHT HAND NON-RATCHETING
NOTE: Bearing Preload Tool (91-14311A1) should remain installed on driveshaft after setting pinion gear depth as it is required to properly check forward gear and reverse gear backlash
DETERMINING FORWARD GEAR BACKLASH
IMPORTANT: Bearing carrier must be assembled to provide pilot for propeller shaft1Insert propeller shaft into position in gear housing(DO NOT place shift cam on propeller shaft 2Place bearing carrier into gear housing and thread cover nut tightly against bearing carrier(It is not necessary to torque cover nut against bearing carrier 3Attach Bearing Carrier Removal Tool (91-46086A1) and Puller Bolt (91-85716) onto gear housing4Torque puller bolt against propeller shaft to 45 Ibin(5 Nm)Turn driveshaft 10 revolutions with the load applied to propeller shaftThis will seat forward gear bearing