Bumper Spikes. Helps prevent pull in and provides better control. Spark Arrester Muffler. Large baffles which reduce noise level and contain a screen designed to reduce the emission of sparks. Quickstop. Stops the chain if kickback force is sufficient. Front Hand Guard. Front Handle. Related searches for rotary engine diagram chainsaw copperhead saw chainrotary copperhead chainsaw chainsrotary chainsaw chaincopperhead chainsaw chainrotary chainsaw barsstihl 041 parts diagramcopperhead chainsawstihl ms 290 parts