Re: Impeller – key vs pin to shaft

[DAN ANDERSON]

I knew the water pumps were different. (Thick impeller vs thin). Of course hsg. is different. But thought the bolt pattern for the plate was the same. That alone would account for the whole hsg. having a different part number. That’s the kind of info I needed before I start. I have the 33hp parts and didn’t want to buy another gearcase. Changing the water pump bolt pattern won’t be a problem, but I will have to see what if anything else is different before I go ahead. Thanks for the heads up.

Dan in TN