1999 "EE" Evinrude 70HP 4-Stroke Service Manual, P/N 787023, Page 173Get this manual
m[]] 14Apply OMC Gasket Sealing Compound to threaded surface of retainer and gearcaseInstall retainer with "OFF" mark outward using OMC Retainer Removerl lnstaller, PI 342688Torque to 115 ftIbs(160 Nm)15Bend one tab at position where there is no gap between it and the leading edge of the retainer
INote Tab must be positioned to prevent retainer from rotating in
a counter-clockwise direction
PI 772269, and Stevens Pressure Tester, S-34
16Remove oil level plug and install OMC Gearcase Adapter
17Pump up to 3-6 PSI (20-40 kPa)If pressure gauge indicates leakage, submerge the gearcase in water to determine source of leakage as evidenced by bubblesIf gearcase pressure gauge does not indicate leakage, increase pressure to 14-16 PSI (100-110 kPa)If pressure does not hold, submerge gearcase in water and check for source of leakage Make necessary repairs and repeat test