Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 258Get this manual
12Apply Quicksilver Special Lubricant 101 (92-79214A 1) on threads of collarInstall collar (area without threads toward pinion gear) and torque to 100 lbft(136.0 Nm) using Collar Tool (91-93227) aCollar TOOl (91 -93227)
a Pinion Gear Pinioo NutWasher
NOTE: Clean drive shaft and pinion nut thread surfaces with Loctite Primer (91-326091) before applying Loctite 271 (92-32609-1)13Apply small amount of Loctite 271 onto pinion nut threads and secure pinion gear to drive shaft with pinion nut and washerFlat side of pinion nut should face away from pinion gear