Thank you for this video. I bought two of these over a year ago and neither one would start. Sold one and the other has been sitting. I've replaced everything I could think of (Carb, spark plug, starter coil, fuel filter, etc.) but I didn't know about this. I will have to give this a try and I hope it fixes it. The Farmertech community got mad at me when I complained about it online and they said I shouldn't buy these clones unless I know how to fix them. Farmertech wouldn't honor their warranty either (the saws were DOA) and said I should know how to fix them also. Overall, a very disappointing experience with them.
Just wanted to say thanks for posting this video. I have the exact same saw put two new carburetors on it still ran like crap after watching your video I checked the flywheel key and sure enough it was sheared..