Hi,

Just need some help ref my first 4 stroke engine…

With a 2-stroke (cycle) engine, you have 3 ‘lines’ coming from the fuel tank:

Line A – Fuel line feeding fuel to the carbuerettor
Line B – Line from the exhaust muffler to the fuel tank to pressurize the tank for even flow of fuel
Line C – ‘Filler’ line to fill the fuel tank with.

Problem is that on my Saito FA 40 special (20yrs old I think..) as well as the above there is a ‘nipple’ at the back of the engine at the bottom where the plate is to get to the insides of the engine.
The instructions tell me this is a ‘breather nipple’, my questions are:

1. Do I hook up all the fuel lines as you would a 2 stroke – and if so, what do I do with this ‘extra’ breather nipple?
2. In a full scale 4 stroke plane engine there is a bath of oil that lubricates the workings of the engine – how is this provided on a model plane 4 stroke engine?
3. I have some Model Technics Duraglow 5 which I normally use in my 2 stroke engines – could I use this in the 4 stroke?

Many Thanks