I'm getting ready for the spring conditioning. I want to replace my raw water impeller, but should I do it before of after I start the engines up for the first time since winterizing? I've read after, this way you get the motor primed first and lessen the chance of burning up the new impeller.

I would do it after. Just because the motor will probably start eaiser. But then again after you take the hoses off most of the water runs out of it anyway. If you have stariners might be a different story.
Just grease up the impeller good.

That's what I was thinking to do

Don't use grease on the new impeller. Use liquid dishsoap.

What did you hear about grease? I have always used grease with no problems.

I use the dishsoap also. Good practice

It will get stuck on the Kanutan Valve LoL
















Jking

Grease won't wash out and can clog up in the cooling system passages.

I agree this is the way I have done it, dish soap will just wash away.

What if you use to much soap will it blow bubbles out the exhaust? That would make the onlookers look a little harder