My MS 290 seems to be missing this part. My dealer doesn't stock them and says they've never ordered one. It goes under the sprocket cover. Thoughts on whether this is needed?
https://store.chainsawr.com/products/stihl-chainsaw-chip-gurad-1125-656-1501
https://store.chainsawr.com/products/stihl-chainsaw-chip-gurad-1125-656-1501