Onan Pump cover gasket replacement... how hard is it?

[Cub2140]

I discovered a good sized oil leak today between the front pump cover and the engine block on my Onan equiped Cub. Looking it over briefly, Looks like the electric PTO clutch assembly has to come off along with an assortment of bolts. I was looking at a diagram of the front cover just a bit ago, looking to get a price on the gasket, and it looks like there could possibly be more parts inside connected to that front cover.

My question is, what all is involved in removing that cover and replacing it? Also how hard is it to remove the PTO clutch? Is it pressed on or simply bolted with a keyway on the shaft? Also, when I tried to pull up a picture of the part based on the diagram listed, it was only showing me the crank seal. Is there a kit with an assortment of seals and gaskets to replace?

Thanks for any help. Just trying to get a feel for what is involved in replacing this gasket to be sure I have all parts ready... I hate going for parts more than once!