Jetting help please??????

[Jdev3407]

Im new to this whole quad thing and i am pretty sure my 400 needs to be rejetted cause whenever i let off the throttle it crackles and kinda backfires a lil if ya get the picture and i dont wanna spend alot of money taking it to the shope for 70 an hour plus parts does anyone have like instructions on what i need to do to rejet it and how to adjust it and what i should be looking for please help thank you

[Newrider08]

I dont know what your elevation is but if you are running a slip on and a aftermarket air filter then a 40 pilot and 152 main would be a good start

If you get a 155 main a 152 main and 150 main then you can try the largest first and if its rich you go to the next smaller size of main.

For pilots most people with exhausts and filters just run 42 pilot jet, might be too rich so pick up a 40 pilot and the 42, put the 42 in first and if its too rich even with adjusting the air fuel screw then you can back down to the 40 pilot.

There are some GREAT threads on jetting here on the forum. I did a search for ya just click this link and read away.

http://www.exriders.com/vbb/search.php?s=&action=showresults&searchid=2098133&sortby=&sortorder=

[Eviltanker]

Where do you live in Pa? I got a shop near Kutztown. I can walk you through it you just pay for jets.

[Jdev3407]

i live in montrose Pa its very northeast

[Eviltanker]

Well thats pretty far up there. Well, I'm running a 40 pilot, a 150 main and I bought an adjustable needle and have that on the 3rd clip, screw at 2 1/4 right now.