Just installed my JD Jet Kit this afternoon. I have an 06 CRF 450R. It has an FMF power bomb header with FMF muffler. It has an twin air filter, with twin air cage. I am in Central TX, about 827 ft.
This is its old jetting. Neddle- NCYQ
Clip- 4th from top
MJ- 170
PS-1 1/4, was't normal position I was adjusting it here and there to try to get the bike to run better.
This is the new setting as adviced by JD Instructions.
Neddle- JD Red neddle
Clip- 6th from top
MJ- 180
PS-1 3/4
Small o-ring installed on AP
It started right up on first kick, its idle seemed weak as it had before the re-jet. I think the idle screw is almost all the way clockwise. I didn't test ride it cause I was on pavement I am going riding tomorrow so will tweak with the PS then.
The reason I re-jet was I just had my head done by ~ and he told me my jetting was rich, which is true cause my old spark plug was black as the night.
I was wondering if the JD instructions would help with the running rich. Will report tomorrow after the ride.
Also, I'm almost positive I have the PS in right I was just wondering how do you know if its "lightly seated"?
Thanks