raw water pump

Well, I just completed a maintenance task that I was dreading. Replaced three raw water impellers, two on the mains, (3116 Cats) and one on the Genny, (7.6 Westerbeke). The port engine with the sea pump on the alleyway only took about an hour. the stbd. on the other hand took about ten hours...

I wanted to share an issue I've spent a couple of weeks and a lot of money troubleshooting (and puling my hair out over!), in hopes that it helps someone else out there having a similar problem (and I actually found these forums extremely helpful when troubleshooting this and other issues, so...

I have a 2005 Sea Ray 270 Amberjack with 496 Mercruiser Mag engine. I recently replaced the raw water pump. Now I have a small hose coming off the top of the pump (above the air fittings) that is not connected to anything. I don't remember disconnecting it and don't see any place for it to...

I'm hoping someone here can help me. I was running my 260DA this afternoon at 3800rpm when I noted a change in engine note, and as I throttled back the engine warning buzzer went off. I switched off opened the hatch and noted the serpentine belt was off and the raw water pump pulley with about...