ORIGINAL: dicko
another question, i was looking at the OS engine last night getting it ready to mount on the boat. there's 2 nipples on the exhaust pipe (one for the pressure line to the tank, and another one), and another nipple on the shaft casing. in the diagram in the manual, there's a tube going from the exhaust to the side of the shaft casing. the nipple on the shaft casing looks to have been plugged with some plastic. I couldn't find anything in the instruction manual about pressurizing the shaft case. i assume i need to put the tube on, so i have, but if the nipple is blocked, should i unblockit? or is that a one way valve?
There is a pressure outlet on each side of the exhaust. Run a line from one of these to the tank to provide pressure. Run a line from the other one to the nipple on the shaft casing. This way, some of the oil from the exhaust will go to the shaft while the engine is running.
Also note that it's a good idea to remove the shaft at the end of the day. Dry it off and either leave it out, I store the shaft and prop assembly in the radio box, or oil it and reinstall it. Doing this will prevent rust and extend the life of the shaft.