Re: just a general question about my force 70 hp
If you are talking about the stainless plug on top of the head, don't bother. Water pressure from there is before the thermostat and if the thermostat sticks closed, the engine will overheat with plenty of water apparently being delivered.
My opinion is that a "pisser" is overrated. It is a comfort to some to have the telltale saying the water pump is delivering water. And just because Mercury and OMC plus foreign engines NEED them doesn't mean the Force does. How many times will you actually turn around and look at it?
A good temperature gauge in front of you (that you pay attention to) will do you more good. So will a good overheat warning buzzer or light.
In fact, the river I frequent has a power plant that draws cooling water. on really hot summer days when electric demand is very high, the section where the outflow is will sometimes get well over 90 degrees. My engines will overheat with a completely functioning cooling system pumping its full design capacity. So, I simply run into cooler water as fast as possible--and try not to drop the skier LOL