Thermostat question
 

Can thermostats be removed and cleaned and reused? Mercury outboard 150 hp

If it was working before, why not.

Their used in salt water do there is crud on them but they are not cheap so I was thinking why not just clean them, I used to change my plugs every year but stopped doing that cause they are over 3 dollars rack and they are gapless ,and they work fine, I think I'm going to clean the thermostats too. Still waiting for the heavy hitters opinions but I think you are right too.

Biggest issue i had was the rubber grommet getting crusty. I usually changed em every 2-3 years, but checked the annually. I would change the poppet valve assy at the same time.

Also, when buying t stats, water pump kits, poppet valve kits on merc s, i would recommend OEM stuff.

Phatdaddy that's the way to do it thenI would have all bases covered, I changed my poppet valve had to be over ten years ago and honestly I forgot where it is and how to do it , I changed my water impeller about two years age and the water pump base last year , I know the poppet valve is not hard to change band I should but my motor is not over heating.

Cleaning them does nothing for the vernatherm that actually makes them work. The only rebuildable stats that I know of are the johnnyrude loopers. Thermostats are maintenance items, so why chance cooking your powerhead to save a few bucks is how I look at it.

Ferm,I agree with you 100 percent but I usually change them every year ,but is that nessasary ? So what I did this year is soak them in fresh water and soap, brushed them clean just toget the salt crud off and reuse them and honestly they seem to work better. I feel the salt crust that forms on them restricts them some how ,so I cleaned them and one of the rubber seals was cut and I always save parts and happened to have one so I changed that I not think I would have a problem if I used it in fresh water but salt forgettaboutit.