There is a plastic part about the size of a nickel on my 2003 Sportsman 400 (Model A0CH42AA, S/N 4XACH42AX3B793892) that attaches to a nipple on the carburetor float bowl at one end and the device’s other end has a hose that just hangs loose not connected to anything. The device itself is not shown on any manuals or drawings that I can find. The connection from it to the float bowl rotted off. I snipped a piece of the hose off of the exit end and used it to re-attach the device at the float bowl. It doesn’t seem to matter if this mystery device is connected or not. Can anyone tell me what it is or what it does?