Hi all new here
just got me a new to me boat with a 60hp yamaha put it in the water and overheat alarm started beeping while at idle turn engine off it goes away run again and 5-10 mins its on again so go back home removed thermostat which was buggered so i replaced it put muffs on same thing after 5-10 so ive now dropped the leg removed water pump and impeller bought a new kit for it but it didnt come with the plastic water pump housing which i need the old one looks worse for wear i was told to flush the motor through the top garden hose fitting with thermostat removed which i did but not a drop of water came out of thermo hole has any one had this problem or know what else i can do the fix this