1998 KDX 200 Jetting(starting point)

[Gates]

I just bought a 1998 KDX 200 with fmf pipe / silencer and the air box lid off. It has a totally stock motor. The bike had some problems but is back together. The jetting is now

pilot 48
main 160
needle R1174 2AFKQ 3rd clip (best I can read it)
screw 1.5 turns out

The sliencer packing was burnt out and the bike had lots of carbon on the kips and spooge on and in the pipe.

I live in KY about 700ft elevation.

What jets should I buy and put in? Does this jetting sound stock? Is it a good starting point?

Thanks for the help.
James

 

[D36-108A]

That's the stock jetting, which probably runs rich in your bike. A good starting point is 45 pilot and 155 main, keeping the needle where it is in the middle. Fiddle with your airscrew for throttle response.

The 45/155 is FMF's recommendation, and a whole bunch of people run that combo, myself included.

I'd change my oil to deal with powervalve deposits and spooge.

 

[canyncarvr]

CDave's website:

http://justkdx.dirtrider.net

Has jetting info including incremental changes with different modifications.