My 100 hp 2+2 2 stroke Merc 1989 was running great. However took it for a longer drive and this weird noise came out of the throttle control that sounded like a sick bird chirping. The pitch varied and it didn't seem to have any sort of regular pattern. When starting the engine you get a beep...
I have a 1989 Mercury 100 hp 4 Cylinder 2+2 2 Stroke outboard. The motor had a high speed issue the first time I took it out this year. I looked at the electrical. Checked rectifier, stator, battery charge and all seemed to be OK. Changed the spark plugs and the engine took off at high speed...