Piaggio NRG idle problems?

can u help me plz i got an NRG 50cc it starts but when it get to 3500 revs it just stat to cut out could u plz tell me wat to do

marcus
September 2011

ah glad to be of assistance sir,its nice to get some feedback from yourself ,thankyou for the thankyou :)

adam bike doctor
February 2010

Once again..a big thank you Adam,adjusted the mixture screw as you described and now idles perfectly (i may have messed the settings up when i dismantled the carb previously to clean it out)..you are a preverbial font of knowledge..a human haynes manual !!...Thank you again.

Simon
February 2010

ok on the carb there are two screws one on the side withtn he knurled knob and spring and the other that is nearer the back of the carb and recseed into a hole the recessed one is the mixture screw.se theis to 2.5 turns out and then try to adjust your idle screw so it ticks over,if you cant get it to tick over then it possible that either the part on the slide is damaged(worn) where the idle screw touchs it or the piston /bore is damaged and there is a lack of compression which is likeley im afraid.does it idle ok when its warm or just badly when its cold as there is a small brass choke jet in the float bowl and if it has been blown out by a high pressure air line then it will be getting much to much fuel on choke.have a look to see if its there.and yes it is auto choke the choke is the black plastic bit on the top of the carb with wires coming out of it and it should get warm if its working after a minute or so.

adam bike doctor
February 2010