Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 410Get this manual
NON-BIGFOOT GEAR HOUSING
Pinion GearDrive Shaft Assembly
1Clean pinion nut and pinion nut threads of drive shaft with Loctite Primer T2Position pinion bearing into race while installing drive shaft and pinion gear into housing3Apply Loctite 271 to pinion nut threads4Install new pinion nut, with rounded corners FAC ING pinion gear, onto drive shaftModels 4-Stroke
Drive Shaft Holding Tool