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[RedneckEX]

So my mostly stock motor is fouling plugs every hour or so. Seems to be when the quad sits for a week or so after some riding. Always leave the gas in the "off" position. It's not too wet, just dry black. So will just adjusting the air-screw to lean it out take care of this? Anyone have a diagram of the stock EX carb so I can figure this thing out. I've jetted bikes , never this one tho. Thanks for the help!
Allan

[ReconRider25]

u said u havent jetted this quad but it says in ur sig that its jetted.:huh and ur def running rich.....

[Cody_300ex]

That . was hard to click on. :huh

[RedneckEX]

This thing was jetted by the previous owner for sea level, I'm riding it at around 5- 600, so can I adjust this with the needle clip and fuel screw, or new main?
Allan

[cals400ex]

yes, that was hard to click on.


the mainjet, needle clip position, and fuel screw all control fuel flow at different throttle positions. so, you could be rich on one, but lean on another. all need to be tuned in properly.