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The Chinese scooter has lost compression, also problems with the carburetor. The idle speed is floating. #scooterrepair#139qmb# Instagram- teoriiaskutera VK group--https://m.vk.com/club137935162 Playlist navigation: Charging problems- • How to check the relay regulator (relay z... Generator check- • How to check the high-voltage coil ... Carburetor- • How to check the fuel enricher of the car... Spark problems- • How to check the high-voltage coil ... The scooter won't start- • Why the scooter starts poorly, problems... Variator- • How the scooter variator works visually