I will assume this is similar to the earlier 5 hp that looks just like that.  The impeller is not a tight fit in the original cavity, so you need to use the stainless steel cup that matches to the Honda impeller.  It’s 19223-ZW9-310 LINER, PUMP (Honda) <u>$7.92 from Boats.net.  </u>The cup will need a hole cut in the side for the inlet, and it will need to be epoxied into place with full coverage on the sides and bottom.  With that done, you need to seal the stainless steel plate to the pump using sealant or a thicker gasket, because the cup will stick up from the original impeller height a bit.  Also, I’m not sure this is necessary, but it’s what I did:  There is a channel in the bottom of the Honda cup.  You need to fill that in with epoxy where it doesn’t match up with the inlet hole in the bottom of the original housing.  Then make something to sand it smooth with the inside of the cup.  I used a piece of aluminum stock, turned to a little less than the ID of the cup, and glued a piece of sandpaper to it.  Drop it in the cup and turn until the sandpaper hits the cup.

You don’t need to do the bailer, but if you don’t, put a dab of sealant over the weep hole that forces water up to the bailer pump to keep it cool when not in use.

Here’s a link to what you can end up with:

https://photos.app.goo.gl/wqpZ3BoTjGQeP2bE9

We also did the bailer; that one requires filling in the bottom channel and drilling an outlet hole.  At idle, the one I did was pumping about a gallon per minute.

Tom

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Dmeade