I have a 2185 and there is a 2186 up for sale by me that doesn't run I was looking to get as a parts machine. It looks like the engine is the same Kohler CH18S as my 2185 and it has the same 48" deck. I can't seem to find a difference between the two other than the 2186 was available with other decks. Anyone out there know of anything that was different between the two ?