I would replace the water hosesif it has been sitting for a long time. If your not going to use s.s. braided hoses use some real good rubber ones. I have seen so many water lines split on jet boats. You jet pump put out alot more pressure than a car water pump. I a hose splits your boat will fill up pretty quick. And the faster you go the faster it pumps water in your boat. The stainless steel hoses cost a bundle but they are worth it.