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I have by-passed the kill switch (remove the wire of the stop button from the coil) during the process to make sure that I have spark on both cylinders. I forgot to connect again so when I ran the motor. I could not stop it by pressing the stop button. So I tried to choke it in order to shut it down but it did not so I had to pull the spark plug wire.
Yes, it is very hard to start at cold start! Even though I had the choke fully closing. I saw the saw flood out sometime. I will review of what you said and check all the linkage.
Timing of the point also had been rechecked to make sure the point open when the flywheel mark lined up between two mark on the mag plate.I put the new driver coil in so the whole ignition system has completely new part and it has strong spark!