Re: mercruiser impeller replacement.
OBG, I am confused how you have mixed manufacturers. Mercruiser equipped boats use Mercruiser outdrives (and were usually painted black). OMC equipped boats use OMC outdrives. I know almost nothing about the OMC, except what they look like. Replacing an impeller in a Mercruiser drive involves dropping the lower unit. It's not a simple job, but guys do them all the time. If you can post a serial #, Don S & the guys will ID your unit exactly, and tell you where to get the proper manual, that will walk you through the repair.<br />Best of luck to you, stay safe, enjoy your leave, and Thank You!