2005+ Mercury Verado 4 Stroke 200/225/250/275 6 gear housing Service Manual, Page 39Get this manual
Right Hand Rotation If the driveshaft is broken, place Propeller Shaft Adaptor onto the propeller shaft splines, hold shift shaft in forward gear and loosen the pinion nut by rotating prop shaft counterclockwise to turn gears, thus loosening the pinion nut
aShift Shaft Tool (fabricate from old shift shaft)Pinion Nut Wrench