Help

Can't find water pump on our 2022 holiday rambler invicta 33hb,  we live in colorado and will get there 8 days from now, thinking it may need winterized, I normal do it with a built in winterize hose but the rv doesn't  have that hose so I figured  do it at water pump. But can't wind it, help please,  by the way we picked  the unit up a week ago