I have a 2002 Sportsman 700 Twin. It sat for a while and now I'm trying to get it up and running. I can start it and it runs as long as I do not release the key. As soon as I release the key it shuts down. It starts up easy again after turning the key to the off position. I tried choking it but that make no difference. I'm sure it is electrical but have not been able to find it. Anyone have any ideas?