Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 470Get this manual
10Using tool provided in seal kit (26-816575A2) or water pump kit (817275A3), press seal down over drive shaft (DO NOT GREASE DRIVE SHAFT) until tool seats against pump housing 3Slowly fill housing thru "Fill" hole with Quicksilver Super Duty Lower Unit Lubricant until lubricant flows out of "Vent" hole and no air bubbles are visible4Install "Vent" screw into "Vent" hole
IMPORTANT: DO NOT lose more than one fluid ounce (30cc) of gear lubricant while reinstalling "Fill" screw5Remove grease tube (or hose) from "Fill" hole and quickly install "Fill" screw into "Fill" hole
Installing Gear Housing to Drive Shaft Housing
aToolSeal
11If tool is not available, lightly press seal against housing until height of 0.350 in 0.030 in(8.9mm 0.76mm) is obtained
Disconnect high tension leads from spark plugs and remove spark plugs from engine before installing gear housing into drive shaft housing1Tilt engine to full up position and engage the tilt lock lever2Apply light coat of 2-4-C wfTeflon onto drive shaft splines