I started my snowmobile up for the year, and put new gas and spark plugs in. It started up after a couple pulls and I let it sit and run for 5 or 6 minutes and it idled fine. A couple days later i went out to start it again and it started up fine but wouldn't stay idling. I think the choke lever is disconnected because when I move it, it doesn't seem to be connected to anything. What should I do?