does anyone know what the coorect muffer/ exhaust can is on this machine? I need to buy a new one and most of the places I have visited only know how to punch in a model # and there just doesn't appear to be a listing for the argo at the supply houses. Or does anyone know if the kohler 440 was used in any other machine other than argo and snowmobiles? The argo shop and snowmobile shops around here do not like dealing with the older models.
to Sg in t.o since your post shows you as unregistered I don't know for sure that you are from TORONTO Ontario Canada but t.o is a common short form for toronto. Phone O.D.G. They made the machine and they are helpful and they are not far away. Maybe you should register yourself on this site.
Shop Talk: Tech Tips and Q&A section 
