1983 Yamaha 30EN Outboards Service Manual, Page 102Get this manual
Pinion gear, drive shaft, and shift rod 1Loosen the shift cam bracket screw, and pullout the shift cam 2Install the torquing tool on the end of
the drive shaftPlace wrench over the pinion nut, and hold it by handTurn the torquing tool with wrench to remove the pinion nutNow the pinion, washer, and drive shaft can be removed from the gear case