What I do to get the boss off is lay it on a hard metal surface (I use my vice) put the nut back on the (Just in case I miss) and then pound it with a hammer.Try not to hit the bottom of the crankcase as it will damage it.
.. any idea or pictures of what the original base is suppose to be for that particular engine ?
As for that post up the engine number as that will give me a better idea as to what it's off,and I should be able to work out what it's off.
.. is that not an original victa muffler ?
It is but it has been very very modified. That base should have had a series 70 engine with a box muffler that fit's in the rectangular slot in the base.
