i have a 2000 90 hp model 1090412yn ser OT331577 i had a pilot tube adapter put it the water pressure is about 6 to 8 at idle
runs well but now at 5200 rpms the alarm comes on and stays steady, i shut it down felt of the motor it was cool to touch i started the motor
again, the horn didnt sound, water out the tell tail was strong and cool water pressure was same i pulled the water line off that go's to the guage from the motor
it shot water about 10 foot put the hood back on motor was running fine water pressure up to about 9 again took off and at 5200 alarm again
the alarm will not shut off until you shut off the motor and restart it i am running a 19in prop i am putting a 21 in prop on it
also i have only run about 4800 rpms with the 19in before but the tect also set the carbs while they had it in the shop
it runs much better but the alarm has started going off at 5200 rpm if i stay at 5000 no alarm at all and runs great
can anyone help with this ?