1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Repair Manual, P/N 787024, Page 239Get this manual
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Driveshaft Bearing Housing Service
Do not install the -ring in the bearing housing 's bottom grooveThe bottom groove is an oil passageGearcase damage could resultDriveshaft Servicing