Chas

Thanks - you've confirmed what my mechanic said on the phone. I'm not going to make this my foray into the world of boat self-repairs.

I love the boat - got it new in April 02. Great for wakeboarding, especially when you throw 6 guys in there at once, which does wonders for the wake. I need to do more reading on maintenance - I would have asked the guy who winterizes and services my boat to change the impeller routinely if I had any idea of what it was and that it was something many replace regularly. Now I'm trying hard to get a house call so I don't have to tow the boat to the marina and pull it out of the water. And boat maintenance house calls this time of year aren't easy to get. My guy (who called shortly after my post) tells me that the impeller is a little tricky to get to on the Centurion Cyclone - need to disassemble the water pump too, or something like that. And you need to be sure to get any pieces of the impeller that may have broken off out of the system so it doesn't jam up the engine. All that seems beyond my non existent skills. One last comment for you -- when I first got the Cyclone, the serpentine belt frayed and broke after a few months. I had it replaced, and it shortly thereafter did the same thing. Centurion then discovered that there was a manufacturing wide defect for that model which had something out of alignment causing he belt to fray. My guy learned this from Centurion and came back, made the adjustment (all for free), and I haven't had a problem since. If you do get a frayed belt, have whoever services it for you check with Centurion about the adjustment that it may need. Thanks for your response.

Can anyone tell me how I can check to see whether my impeller needs to be replaced? I have a 2002 Centurion Cyclone, with a Mercruiser 350 (315 HP) engine. My boat starting running hot and the alarm went off. From what I've read/people I've talked to, it's probably a bad impeller. I don't have experience working with boat engines, but this time of year it is almost impossible for me to get anyone willing to make a house call to fix it. Any thoughts/tips appreciated. Thank you.