1990 150 black max mercury alrams

[maso]

Just been out in boat. whilst on still water at full throttle no beeps. when I went into a bit of rough water started getting a beep every now and then. Never had this problem before and just had the boat serviced. Any ideas what problem maybe?

 

[Hebby]

Solid continuous beep is overheat alarm. A beep beep beep beep is oil level. There is a small oil tank on top of motor with a float in it. If the float goes down it triggers the oil alarm. It just happened to my motor and we had an airleak on the tube from the oil reservoir to the motor. Hose clamp fixed it.

 

[maso]

Thanks for the info