Both my STIHL Chainsaws were smoking and it wasn't the oil pump. How I fixed them.

In this video I fixed my two chainsaws that were both smoking. One is a STIHL MS391 and the other is a STIHL MS250. Here is what I needed for this:
Tools: chainsaw wrenches that came with the chainsaws
Parts:
-new 25 inch chainsaw bar, 3003 000 8830 for MS391
-new 18 inch chainsaw bar, 3005 008 4711 for MS250