Tweet
Hi. I,m in the process of rebuilding a 93 with a 640 engine in it. The engine had been previously removed by the former owner and all the fuel tank lines had already been disconnected. On the tank there are three fittings with a total of four lines attached. I know one is the feed line to the carb, one is the return line from the carb, one vents through a fitting in the vent box under the seat but for the life of me I can't figure where the fourth line goes. It's T'd at the fuel tank to the vent line that connects to the vent box. There is no reference in the service manual and the IPC doesn't even reflect it there. Can anyone help? Thanks.