2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 130Get this manual
Lower unit
Removing the propeller shaft housing assembly
1Straighten the claw washer tabs a, and then remove the ring nut and claw washer
Disassembling the propeller shaft assembly
1Remove the spring 1, and then remove the cross pin 2, dog clutch 3, slider and shift plunger
Gland nut wrench 1: YB-34447 2Pull out the propeller shaft housing assembly