copeland343 wrote:
Its a bonding wire. For example, if a storm is coming and you try to refuel with out it you will know why you need it. Mobile fuel needs it because you are not grounded (unless you are plugged into electric power)you want to bond before you put nozzle in tank and start dispensing fuel the fuel falling into tank will cause a buildup of static charge. Service station pumps are grounded and the hose touching the filler neck bonds you to to pump then to ground.
I have one on mine also, never used it. Most ATVs have plastic fuel tanks. so I dont see the point.