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What i s wrong with the engine?
FB460 single cylinder engine.
With block damaged, it will also have crankshaft and head damage. So engine is not worth rebuilding. What is the engine in? Make and model? I would go for a replacement.
At first glance I do not see where there is a replacement for the engine. Not a common application. So it looks like finding a like engine would be the easiest, or having to adapt a Briggs or Kohler with the same crankshaft dimension and the change over of the other parts.
What is the ful model number? FB460V-?????
Engine is no longer made, and the replacement seems to be the one I linked from arlingtonpower. above..
did you see my response?
Did you find you a new engine? I see question is still open.