Tighten your spark plug, that was a soft seize, not a dirty fuel filter stall.
Dos right now has Polini Corsa kits for horizontal Minarelli scooter engines in stock for a good price.
I can’t decipher the engrish on the Dos temp/rpm gauge instructions.
Cheap clone carbs can’t keep up with heavier drinking cylinder/pipe combos.
If you’ve checked everything else, including replacing the dirty fuel filter, and the damn thing is still getting hot and cutting out at high revs make sure there isn’t a clump of trash in the tank clogging up the fuel outlet.
Plastic tanks are nice.