Also the air filter location sounds like what was on my Adly RT50. That motor was a dead copy of a 2 stroke Vino motor from Yamaha. Also had a 2 stroke Hyosung Sense scooter (GREAT little scooter) that was a Vino motor clone. Note that the air filter mounting was VERY close on the Adly but the Hyosung had a strange hose that relocated the air filter to a different location to clear the body panels. The guy I sold the Sense to rode it with the air filter disconnected and lost most of his compression. When it first lost power he never investigated the reason why. Kept riding it till it got slower and slower. I have a extra top end I offered him for free but Im not doing the labor. That Hyosung was a pig to work on!
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