Classic OMC Outboard Motor Tune Up #10 Partial GC Reseal (Shift Rod O Ring Replacement)

Replacing the shift rod O-Ring and resealing the gearcase. I did not replace all the seals on this one. The shaft seal condition looks OK and the O-Ring was the only leak I found when checking for leaks. The clutch dog may need replacement before long anyway, so I did not replace the shaft seals.