Craftsman Kohler engine stuck both intake valves in the guides

Almost no question it's fuel. You can usually get them free if you squirt some Kroil/ATF mix in and let them sit. The guides aren't replaceable because they are the parent material of the head. Kohler does make a replacement valve with an oversize valve stem. If the guide is worn, you would ream it and install the valve with the oversized stem.
 
Almost no question it's fuel. You can usually get them free if you squirt some Kroil/ATF mix in and let them sit. The guides aren't replaceable because they are the parent material of the head. Kohler does make a replacement valve with an oversize valve stem. If the guide is worn, you would ream it and install the valve with the oversized stem.
Thanks for the input V.,

I'm not going to waste time trying to "save" this pair of heads because it will likely be a repeat problem.
 
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