Altitude question

[gfcm6388]

I just got a 2002 KDX200. Nice bike!! The guy I got it from took really good care of it, and I want to maintain that. Got it in Oklahoma brought it to Colorado. Going from 500 ft above sea level to 4900 ft I would think would mess with the fuel mixture. Any ideas on jetting this thing? it seems to be running a little rich. (it has an FMF pipe on it, don't know the model though).
If anyone knows some good trails in northern Colorado, let me know.
Thanks!!!

 

[Rhodester]

In moderate summer weather you'll probably end up around 40 pilot (maybe 42, depends on air screw), 150 main, needle in #3, and air screw 1 1/2 out. That should be pretty close, but on the safe side.

My 'H' model (same as yours) has FMF -35 (woods) pipe, 'Q' silencer, RAD valve, and air box lid on with the snorkle pulled out.
Jetting (stock carb, 2800'): 152 main, DEK/3 needle, #7 slide, 42 pilot, a/s 1 1/4 out. At 5000' I change the main to a 148 or 150 (depends on temperature...150 would be if it's a little on the cool side), and adjust the a/s. This is with 40:1 oil ratio. Keep in mind that each bike is a little different, however.