It won't take off power coat though...
Carb cleaner will remove the original finish off a Stihl saw. That leaves me doubting the original finish is powder coat. I also don't believe powder coat would chip and wear like they do. I personally believe Stihl leaves a lot to be desired with their finish. It is not what I would call durable. I've also noticed that a lot of older saws seem to hold up better than the knew ones. Take a look at all the old 015s on eBay. Look at my 030AV. You don't often see a newer saws finish hold up like that. I might be wrong, but it's just something I've noticed.