1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Repair Manual, P/N 507266, Page 216Get this manual
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Assembly
4 Remove the toolPosition new O-ring CD on the pinion bearing screwApply OIIIC Nut Lock to threads of the screwInstall the screw into the gearcaseTighten the screw to 48-80 inIbs