How many miles on it ? Ever adjusted the valves ? Most valves get too tight where they do not open up enough making it hard to or unable to start as well as stall when warm . My Echarm got to where it would want to stall just before coming to a stop around 2,200 miles even with Ducatti EFI instead of a carb . Reset the valves and 16k miles later it still runs as good as when I bought it . All 4T scooters will need the valves adjusted at least once with some needing it done right out of the crate
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