Water pressure

[daisyh]

I have a 2001 90 hp Yamaha, could you tell me what is the normal pressure reading on the water pressure gauge, with the engine running at full throttle. Also, what would be the minimum water pressure a 90 hp Yamaha should run , with out damaging the engine.

 

[NathanY]

Re: Water pressure

On my merc, the water pressure is anywhere from 3-6lbs on the guage. Hope this helps.