I have a 2015 4RT that I bought used in 2020. I've never had an issue with this bike, but it recently sat in my garage for about 6 months without being ran. It ran fine when last put away. I replaced the fuel with fresh non-ethanol fuel and tried to start it with no luck. It will start and run when spraying starting fluid down the air boot, so to me that points to a fuel issue. I unplugged the fuel pump connector from the bottom of the tank and connected 12v to it. Nothing happened. No pump sounds. No fuel out the disconnected fuel line. Is there something that would cause the fuel pump not to pump when directly connected to 12v power, other than a completely dead pump? I haven't pulled the pump out of the tank yet to inspect, but find it odd for a pump to fail while sitting in a temperature controlled garage for 6 months.