Mercury 6hp 2 stroke 1997 thermostat
I am in the process of changing the impeller of my engine and it was not pumping water on sunday. It had been sitting since November. The impeller looks rough so I have ordered one however it should pump some water. I have opened the thermostat housing and inside is a very clogged waterway which I have now cleaned. Should the thermostat lift out because it's looking rather seized in? I am sure when I last ran it the tell tale spouted water straight away but not now. Could the thermostat be just gunked up? Any advice appreciated.