The fastening bolt for the clutch lever and hot start lever can lock up the hot start if over tightened.
The cut out issue - fuel starvation maybe? Check fuel tank vent hose, fuel flow from fuel tap.
What is your idle speed set at? Small displacements four strokes normally likes idle speed set a bit on the high side.
How is you mixture adjuster set? Std is 1.5 turns out from fully closed.
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