I bought this boat and motor a few weeks back and have taken it out a few times to check it out. After running for a couple of hours (only on this one occasion) all of a sudden I got a no oil light and alarm. I immediately turned the motor off. After about 30 seconds I restarted it and no alarm and it ran fine for another hour or so. On one other occasion after maybe 20 minutes the alarm went off again and I immediately shut down the motor and restarted it and no more alarm for a couple of hours running. These have been the only 2 times this has happened out of maybe 5 or 6 times out. The tank is full of oil and the bulb is tight. Any suggestions?? Maybe bad sensor? Thanks