I bought a 78 DiMarco Day Crusier has a 460 Ford with a Berkley pump. First jet boat for me.
My question is, when i went to pick this boat up the seller had it running on the trailer with water hooked up to the motor. So I end up getting up inside the boat after hearing it run and shut the motor off. The sellers reply was "it is OK if it runs as long as there is water connected to the motor". I have a v-drive and understand that running water through the motor is needed to keeping it cool, but does running it out of water damage the pump? I would think it is not good for it. My other concern would be that if the seller thinks it is OK, then how many times have he done this. I have ran the boat a few times and it seems like its running good, but like I said, its my first jet.