Live Well pump/Raw water wash-down pump conversion

Anyone had luck with changing a live well pump into a raw water wash-down pump. I have a live well system that you can connect a hose to but the pump is to weak to make it useful as a wash-down system. Is it as easy as changing the pump?? There is a three way valve in the live well … allows H2O while running …OFF…and the pump while not underway.

Nauticstar 1900XS w/ suzuki DF140