Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 244Get this manual
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10Support piston and tap out piston pin using service tool (91-76159A1) as shown11Remove piston pin needle bearings (29 per piston) and locating washers (2 per piston) as shownIMPORTANT: We recommend that you use new needle bearings at reassembly for lasting repairHowever, if needle bearings must be re-used, keep each set of bearings identified for reassembly on same connecting rod
aPiston PinPiston Pin Tool (91-76159A1)Needle Bearing Locating Washers 12Remove upper end cap and lower end cap from crankshaft13Remove and discard O-ring seals from each end cap14Remove oil seal(s) from end of each end cap by driving seal out with punch and hammer15Inspect roller bearing in upper end cap as outlined in "Cleaning and Inspection"