Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 140Get this manual
3Remove components from shift shaft Drive Shaft Needle Bearing Removal
1If bearing is rusted or does not roll freely, replace bearing
aMandrel (91-37312)Needle Bearing
Rubber Washer Bushing Seal SurfaceE" Clip Shift Cam
Cleaning and Inspection
Gear HousingBearing Carrier Castings
1Thoroughly clean gear housingbearingcarrier castingsBe sure all old gasket material is removed from mati ng surfaces and that carbon deposits have been removed from exhaust passages2Inspect castings for cracks or fractures3Check sealing surfaces for nicks, deep grooves and distortion which could cause leaks4Check water passages for obstructions