The fuel system of the golf cart is the lifeblood of your buggy. Without it, gas cannot be delivered to the engine's cylinder, and if that does not happen, you are not going anywhere. The golf cart will not even crank. There are several components to this process. Your final step is the carb, but before you get there, the Yamaha Fuel Pump uses compression from the crankcase to flex an internal diaphragm that allows fuel to be drawn from the gas tank sent through the pump up to the carb.The most common issue that pops up with these is the ethanol in the gasoline that has eaten through the inner parts of one of these, causing it not to work anymore. This is why you should always use ethanol-free gas. It's usually the blue pump at the gas station. If you can't get it, make sure you are running your golf cart all the time. The less that sits in the system, the better. Call Buggies Unlimited and get your Yamaha fuel pumped shipped now.