Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 400Get this manual
RIGHT HAND NON-RATCHETING
2Place forward thrust hub over propeller shaft with shoulder side toward propeller3Place propeller on propeller shaft and slide it up against thrust hub51866
aForward Thrust HubPropeller Shaft 4Place continuity washer (if equipped) onto shoulder of rear thrust hub5Place rear thrust hub, tab washer and propeller nut on propeller shaft6Thread propeller nut onto propeller shaft until nut is recessed into tab washer7After propeller nut is recessed into tab washer, tighten nut securely [minimum of 55 Ibft(74.5 Nm) torque]8Bend of the tabs of tab washer down in grooves of rear thrust hub to secure propeller nut(If tab washer tabs do not align with slots, continue to tighten propeller nut to obtain alignmentDO NOT loosen nut to align tabs