kenny nunez
Captain
- Joined
- Jun 20, 2017
- Messages
- 3,290
The other screw on the starboard side above the lower is just a vent as the housing gets filled from the lower drain hole and an indicator if the case was full. If you have a dip stick in the top of the exhaust housing cover then you can use it to gauge when there is enough oil in the gear case. The dip stick was a running change that was added around 75.