Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 207Get this manual
13Determi ne pinion gear depth by inserting feeler gauge hru access hole in locating disc141f clearance between shimming tool (c) and pinion gear (d) is .025" (0.64mm)pinion gear depth is correct dReassem ble as instructed inDrive Shaft and Pinion Gear Reassem bly Instal lation", im mediately precedi ng
DETERMINING FORWARD GEAR BACKLASH
IMPORTANT: Bearing carrier must be assembled to provide pilot for propeller shaft
aBearing Carrier Removal Tool (91-46086A 1)Puller Bolt (91-85716) abcdFeeler Gauge Locating Disc Shimming Tool Pinion Gear