Now take the wire brush and scrape it clean.
Chainsaws have a wide range of uses including trimming tree branches, cutting wood for your fire pit, cutting back overgrown bushes and removing excess sapling. It enters via the intake port (as the piston rises) into the crankcase and then is transferred to the combustion area via the transfer ports (as the piston descends and the piston top uncovers the port opening to the cylinder). Blow out the can with compressed air to get all of the ash and carbon out.
Similar to the high/low adjustment screws, the process for tuning the lean can be somewhat involved, so you should refer to your chainsaw’s user manual for The port and polish basically makes it easier for air/fuel to flow into the combustion chamber and gasket matching permits a greater volume.
