Hello, I have a few question and I really really hope someone on here can help me out! For my day job we have Vac trailers(giant vacuum for sucking up Mud) they have 4 cylinder Kubota v2203 engines in them. They do not have a fuel shutoff solenoid on them but they turn on and off with the key? So how are they shutting off fuel? And does anyone have any idea what type of flange is in the factory v2203 turbo drain and feed so I can make new oil lines?