Need help finding a main jet

[StickyNick]

My shitty Piaggio NRG needs a new main jet because it's fucking up spark plugs like there's no tomorrow, but nowhere in my local area has any with a thread to match the one I have.
Does anyone know of anywhere online where I could get one? and whether I gotta get a smaller or larger jet?
Cheers.
____________________
Riding a 2001 Piaggio NRG MC3 DT (Well, would be if it worked right now)
Saving for Yamaha YZF-R125

[2006 _p1]

Tryed adjusting the air/fuel mixture?

[StickyNick]

Nah, how do i do that? I'm getting pretty desperate here

Forgot to mention it needs to be for a Weber carb.
____________________
Riding a 2001 Piaggio NRG MC3 DT (Well, would be if it worked right now)
Saving for Yamaha YZF-R125

[2006 _p1]

There should be a screw on your carb adjust untill your spark plug looks like thishttps://www.lambretta.co.uk/downloads/image/plugyes.jpg

That should sort out your problem.

If your scooter has a air/fuel mixture screw?

[StickyNick]

My mate played with a screw that changed what it was like when the scooter was sitting idle? Is it the same 1?
____________________
Riding a 2001 Piaggio NRG MC3 DT (Well, would be if it worked right now)
Saving for Yamaha YZF-R125

[2006 _p1]

I think you have found the idle screw!

[StickyNick]

I have no idea what's what, it's him that plays with it not me
Is this the right one or not?
and if it makes any difference or even matters, the circled part is black on the plugs...
https://i242.photobucket.com/albums/ff114/nickmccann/plug.jpg
____________________
Riding a 2001 Piaggio NRG MC3 DT (Well, would be if it worked right now)
Saving for Yamaha YZF-R125

[alains]

the colour is pretty good for me , compare with that
https://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html
____________________
the worst day fishing is better than the best day working

[StickyNick]

That isn't my plug, i'm just showing which bit is black on mine.
And I found the air/fuel mixture screw, gonna fuck around with it when my hand's out of plaster
____________________
Riding a 2001 Piaggio NRG MC3 DT (Well, would be if it worked right now)
Saving for Yamaha YZF-R125

[2006 _p1]

If its black you need to lean it up.

[alains]

dont be confused between oil fouled and too rich
____________________
the worst day fishing is better than the best day working

[Kickstart]

Hi

Mixture screw affects idle mixture. Will not change the mixture when you are using any throttle at all. The main jet only affects full throttle mixture (and there are a lot of factors rather than just the thread size, different carb makers, or even different series of carbs from the same maker, mark the jet sizes differently). Needle jet is what affects the mixture through most of the throttle range.

To go with Alains comment, none of the jets should wear and leaning it off too much stands a good chance of resulting in a seizure.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing