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vacuum piston

  1. Fuel Supply and Carburation
    Hi all. Having a problem with starting my 500T 1975 and believe i traced it down to slow/limited movement of the vacuum needle/piston (Key-Hin carbs). I made a setup with a vacuum cleaner sucking air through the carb and when doing this, I can hardly make the piston move (or moves veeeeery...
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