When I was on the boat last week I wanted to drain off any accumulated water from the fuel system. The first thing the fuel line encounters after the tank is a stop cock, then there is what I think is called the agglomerator. On Jubilee it's a Bosch unit. On its underside is a rubbery/plasticy projection which I tried to turn, but which refused to cooperate. Here it is.
That black thing is what I tried to turn, but it just felt rubbery and would not budge.
Am I doing the right thing? Is this where I drain the water off? Should it twist anticlockwise? How much force can I apply?
Any advice would be greatly appreciated.
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