I picked this up yesterday, 451 miles on it, mint condition, no fuel lines hooked up. I need to find out which is fuel and which is overflow on the carb. It has two inlets/outlets. One is from tank to carb, the other carb to engine block it appears. I don't want to hook this up and fill the block with fuel. Does anyone have a vintage repair manual they can scan and upload for me of the carb/fuel set up for this sled?