2002 Yamaha 75hp 2 stroke Alarm,overheating problem?

hi guys,
i was having engine trouble after 30 minutes,first thing my alarm sounded in the throttle box with just a light crackling noise i eased back on the handle and headed for the harbour en route the crackling changed to a constant beep i slowed down again and took the handle off to idle for a few minutes and the engine stalled got it going but need a slight bit of revs and let it idle for a few minutes and the alarm went off,started again at abt 15 knots leaving it like that and the alarm came on again and the engine slowed down and started vibrating so i took it out of gear left it to idle for a few minutes and carried on to harbour,i changed the impellor and the oil and still the same problem,hope you guys can help it would be much appreciated, thanks milli

your alarms are

over heat
no/low oil
water in the fuel, that goes away when in gear

what you do is pull the overheat sensor when the alarm goes off
id it stops you have a bad sensor or overheat problem

thanks mate il try that today