After I've had my bike apart for some winter maintenance and tightening some coolant lines, my F1 light is on steady when I restarted the bike. I let it run for approx. 8 miniutes filling the radiator as needed, then sorta blipped the throttle a few times to get the air bubbles out, but the light stayed on the whole time. The fans never came on, it's about 15 degrees here, and I had to open the garage door while it was running. What's the F1 light telling me? Nothing serious I'm hoping! I'm getting out my service manual but thought I'd put it on here too. Oh, it's an '04 model.