Quote Originally Posted by lineman49 View Post
Wnyguy, shouldn't really have to pull outdrive off to replace just the waterpump/impeller, just remove lower part of it. That is at least on a merc.or yamaha I know.
Lineman you are right however I wanted to pull the drive because just replacing my impeller/pump case is a best case scenario. I also wanted to check things over in case anything else was bad (ie back flush all seawater passages), and I'm overdue for engine alignment check so it was a good excuse. I have a merc 170 with an alpha drive, I'm a member of the "470" club...