Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 198Get this manual
Forward Gear (Single Propshaft Needle Bearing) REMOVAL and DISASSEMBLY
cUse Slide Hammer (91 -34569A 1) to remove forward gear tapered bearing race
NOTE: Forward gear can on ly be removed from gear housing after drive shaft and pi nion gear have been removed NOTEThe condition afthe forward gear tapered roller bearing cup is an indication of the condition of the tapered roller bearingReplace bearing and cup if cup is pittedgrooved, scored, worn uneven, discolored from overheating, or has embedded particles1Reach into gear housing and lift out forward gear
IMPORTANT: DO NOT remove tapered bearing or needle bearing from forward gear, unless replacement of bearings Is required(Bearings cannot be reused after they have been removed
2If inspection determines that replacement of forward gear tapered bearing is required, remove bearing from gear and bearing race from gear housing (tapered bearing and race MUST BE replaced as set), as follows: aCut off roller bearing cage; remove roll ersNOTE: It may be necessary to gri nd groove at top lip of bearing race to secu rely hold universal puller plate in position bPress gear from bearing race, using suitable mandrela Slide Hammer (91 -34569A 1)Fo rward Gear Tapered Bearing Race