Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 394Get this manual
RIGHT HAND NON-RATCHETING
CAUTION
Until bearing carrier is installed into gear housing, extreme care MUST BE taken not to apply any side force on propeller shaftSide force on propeller shaft may break the neck of the clutch actuator rod11Insert shift shaft down shift shaft hole (of gear housing) and thru shift cam and cam follower(It may be necessary to rotate shift shaft back-and-forth slightly for it to enter shift cam 12Apply light coat of Quicksilver 2-4-C wTeflon Marine Lubricant to threads of shift shaft bushing(Thread bushing into position, but do not tighten down at this time)