150 yama outboard giving buzzer warning

[yama-mamma]

Ive got a 04' yamaha 150 2 stroke that normally runs like a top but lately its been giving me some trouble. From idle speed up to around 15mph it randomly gives off a buzzer alarm and idles down to "safe mode". Changed water pump and motor still acts up. I can cutt it off and on a couple of times and then it goes back to running properly. Any help would be great! This motor has an oil resovoir in the floor, if that helps.

Thanks

[99yam40]

what are the gauges indicating the alarm is?

[barrylaine]

trouble buzzer

what are the gauges indicating the alarm is?

I have a similar trouble , the gauges show no errors......Shut engine down waited several minutes .restart all is great.....One event prior to buzzer was running rpm s up the the 3800.for about 6 minutes.......I understand top side is 55....

Open for HELP......