Thanks to all that responded about the oil fill cap. I probably won't be able to look at it until the weekend.
I live in Loomis, bought the machune in Reno and they closed, had it serviced at Williams near Placerville but they don't woek on Artic Cats any more, they sold the place and it is now a Polaris dealer. I've been trying to talk a motorcycle company called OTD to carry and service Artic Cats but so far no luck. I nmostly use the Prowler in Idaho ehre there are hundreds if not thousand miles of trails and very little hassling from the State.