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!!