Re: Thermostats 2003 Johnson 175 Looper
Personally me, I change mine with my water pump, ABOUT (depending on hours) every 2 to 3 years. Just keeps me honest plus I like to flush my water line while the lower unit is off to the t stat housing. May as well change them while Im in there.
You will need 2 plugs, part #0435491
2 o rings part #0331188
the spring is part #0338174, but dont always need to change that
"http://www.crowleymarine.com/brp_parts/diagrams/25200.cfm"
Here it is on iboats, however out of stock at present.
http://www.iboats.com/mall/partfind...gd_poid=358558&gd_row=53&**********=983066653