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Thermostat stuck open How to clean out

johnny_wheeler

New member
"I sucked up some dirt last we

"I sucked up some dirt last weekend, and my water pressure is lower than normal at idle speeds. It normally runs 3-4 psi and it's showing 0-2 psi now. The last time it happened, I took it in the shop and they told me the thermostat was stuck open. Rather than take it back to the shop, I'd like to pull the thermostats myself and clean them out, since people say it's fairly simple. Problem is, this is my first boat with thermostats, and I have no idea where to start looking for them. Is there an engine schematic that I can look at online or anything that tells me how to do it? It's a 2004 Optimax 225"
 
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