Snobdds
Elite Member
Husqvarna calls their intake system "air injection". It centrifuges some of the debris out of the air before it goes to the air box where the filter is.
It's an old idea. Many tractors have had it since the '40s or earlier.
So it's just air pathways to make it a "cyclonic" injection.
I thought all stihls had this by the way of the recoil cover.