Go for the Amsoil 'Power Foam' and use it in anything. Be sure to follow the directions. I use the whole can for the truck, and let it soak in for about an hour. Man you won't beleive the clean-out you get.I go with a 1/4 can on the lawn equip..
I use it on all my equipment. My 2 stroke Shindiawas and Echo as well as my 2 stroke Lawn-Boy 21',and my 2 Honda HRC 216 com. walk behind. You don't need to use the whole can as per the directions for autos. In most cases I give it a few sprays into the intake while running and your done.
Try it out you won't be disappointed. The best cleaner yet.