I bought a low wing acrobatic plane at a yard sale after sitting in my garage for about 2 years (while I was flying my trainer) I want to get it going. My trainer didn't have a cowling and this one does. I was wondering how do I fill the tank and drain it without taking the cowling off? Also with the cowling on and the motor at 400 rpms how do I shut it off without pinching the fuel lines?

Thanks For Your Help!!

The engine needs to be set up to where you can completely close the main throttle barrel with the servo.

I set mine so that with the stick full back and the trim full forward, its just right for starting at a high idle. It has usually worked out (most times...) so that the engine will idle as low as 1/2 trim and minimal stick.

With that set up, I can positively shut down the engine whenerver I want.

There's several options for fuel line access.
I've seen people route the brass fuel line from the tank pickup out the side of the plane, and then a 1/2 inch break and another piece of brass tube going on toward the engine. Short pieces of silicone fuel line make the connections. (A picture wold help... but I don't have one. )
The commercial "Fuel Filler" valves allmost all seem to have leakage problems after a couple of months of use...
Then there's the 3 line tank system, where you route a 3rd line (a second clunk or a second vent... your preference) to a convenient location and disguise the plug as some detail of the model, such as a gub battel on a warbird... or a pitot tube...
Ant the favorite of many Patten flyers is the "Fuel Dot" which is essentially a commercial version of the hidden 3rd line.

Thanks for all the help this site is great!