1985 OMC 65, 100 and 155 HP Models Commercial Service Repair manual, PN 507450-D, Page 316Get this manual
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Installing Pinion Bearing155 After the gearcase has been thoroughly cleaned and inspected, install new pinion bearing in the gearcase as follows:
14-20 12" Hex Head Screw 1" 0.0 Flat Washer Spac