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Thread: My Free 2003 Scarabeo 150

  1. #16
    apriliaforum prov-nov Pinkscoot's Avatar
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    It the sign of an air leak. you rev the engine and the throttle snaps back to idle but the engine either stays revved or slowly comes back to idle. Have you done anything to your scoot or is it still stock?
    Italian scoots owned: 2003 Scarabeo 150, Italjet Velocifero, Vespa GTS 250, Vespa S50, BV 250 (rebuilding), 1977 150 Sprint Veloce (future project) and Vespa ET2 (future project)

  2. #17
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    Quote Originally Posted by Pinkscoot View Post
    It the sign of an air leak. you rev the engine and the throttle snaps back to idle but the engine either stays revved or slowly comes back to idle. Have you done anything to your scoot or is it still stock?
    I bought it 2 years ago and it is a 125 model with the 150cc engine. Just by looking around I can see that it has been fixed quite a few times, but it seems to be mostly stock. All parts seem to be original. Since I got it I have replaced some of the badly worn rubber parts (the same hose you replaced), replaced the belt, variator slides and weights, cleaned the carb etc. It does run quite fine, but I reckon it could be better. I mostly cant get it to start when cold just by the press of the button. Need to twist the throttle a bit.

    For me the idle screw doesn't seem to be doing much. When I rev the engine it quite often just goes down to low rev idle ignoring the idle screw setting.

  3. #18
    apriliaforum prov-nov Pinkscoot's Avatar
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    Which screw are you talking about, the A/F mixture screw or the idle speed screw? If its the idle speed screw it could be that you need to adjust your throttle cable.
    Italian scoots owned: 2003 Scarabeo 150, Italjet Velocifero, Vespa GTS 250, Vespa S50, BV 250 (rebuilding), 1977 150 Sprint Veloce (future project) and Vespa ET2 (future project)

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