1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 142Get this manual

8Remove bolts from crankcase end cap (lower) 19314

13Remove main roller bearing assemblies (2) from crankshaft as follows; Remove retaining ring20020BoltsEnd Cap

S Remove raceS Remove main roller bearings
9Remove crankcase bolts, and cover

10Remove crankcase endcap (lower)11Remove oil seal and O-ring seal27649

aRetaining RingRace

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives