Search the Community

Hey all, I have a 2017 VTX with the 410 Raptor Motor. New boat to me this summer and need to do the winterization. I've winterized our inboard for years so I get the process but its an all raw water system and not the closed cooling system this boat has. I'm confident after reading the Indmar manual I can get the water out of the engine cooling loop but have some questions about how best to handle some of the accessories. 1) Is the heater core indeed on the antifreeze side of the motor and not full of raw lake water that will freeze. I think this is the case and found the black connections in top of the block with the stickers noting "to heater" and "from heater" but cannot find any solid information confirming this. 2) There is a factory shower. This is a new feature for me and wondering if there are tricks to eliminate the water from it. I found the hose (clear braided plastic hose with red/blue stripes) that appears to go from the shower to bottom of the heat exchanger on the "hot" side. Can I simply disconnect and blow air? Do I need to turn on the pump and suck anti-freeze through? Does it drain itself if I just turn the pump on? Thanks in advance for any advise.