Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 202Get this manual
Forward Gear (Dual Propshaft Needle Bearings) REASSEMBLY
7Place SHORT need le bearing on short shou lder side of bearing tool with numbered side of bearing toward shoulderPress bearing into forward gea until bearing tool bottoms against gear
1Place forward gear on press with gear teeth down2Apply light coat of Quicksilver Bearing Assembly Lubricant onto the in side diameter of forward gear tapered bearing
3Position forward gear tapered bearing over gear4Press bearing onto gear until firmly seated; be sure to press only on inner race of bearing
Forward Gear (Single Propshaft Needle Bearing)
REASSEMBLY
1Place forward gear on press with gear teeth down2Apply light coat of Quicksilver Bearing Assembly Lubricant onto the inside diameter forward gear tapered bearing 3Position forward gear tapered bearing ove gear4Press bearing onto gear until firmly seatedbe sure to press on ly on inner race of bearing