Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
KXcam22:
Gabe,
I was thinking that while you get the CGJ you might as well get the CGI just in case (at least that gives you the whole set for the mantlepiece display). The needles are probably cheaper than the shipping. With the 40 pilot test, I forgot to explain that since the pilot and needle (straight section) overlap at 1/8 to almost 1/2, with the leaner needle it might work ok. Again, if theres no idle then forget it, it is obviously still too rich. Also, I forgot to ask How does the bike start, hot and cold? Mine is almost always 1 kick hot or cold and I think that may be typical when jetted nice. Cam.
gowen:
Cam, it starts first kick hot or cold. At first it was quite hard to start cold, but I found that it was the stator pushing low numbers. Replacing the stator fixed it right away. So, no problem there. I'll go ahead and order the CGI & CGJ. They have been great about getting parts here, but I also paid $20 for overnight. Which in this case I'll do the same. They are only $5 a piece which beats $20 a pop from the dealer.
So far, I have it where it idles the smoothest. If I turn the air screw in 1 turn, the idle starts falling. I turned it until the idle smoothened out and then backed it a 1/4th turn.
Cam, it seems that the only way it will not surge is if I turn the air screw all the way in. It will not surge it it does not idle.
KXcam22:
Gabe,
That is very good information! Turning in the air screw richens the 0 to 1/4 area. That is more evidence that you may be a touch lean in the 1/8 to 1/4 area and the next richer needle (CGJ) is the direction to go. If you are 2 turns out and the 38 idles nice, the 38 is probably the right pilot and the richer needle should fix up that lean area, give you more low power and reduce (or eliminate) the surge. Cool! It seems to me that you are getting very very close. I saw your post on the WER damper. I have never riden with a damper or felt I needed one. Do they really make that much of a difference! I don't have any dunes or really long fast areas where I live. Cam.
kawdude:
All excellent information guys. I especially enjoy the part on getting rid of the surges and I agree that richening the mix via the screw effects it.
So what I understand that to remove the surges keep going richer. If if quits surging great if it doesn't the 1/8 to 1/4 area of the needle maybe incorrect. That would explain the surging difference on mine when I dropped the clip to the 3rd notch. It was surging badly and some knocking.
Thanks again.
gowen:
Alright! That sounds like a deal to me! I'll get those needles ordered and hopefully have them here by Friday and get back to you about the status. I'm going to a big local riding area Sunday and will have it worked out before then.
As far as a Steering Stabilizer. I've never ridden with one all my life until now. And seriously, it is a great investment. I ride alot of trails with rocks, ruts, sand, mud and roots type and it holds the wheel in it's place and makes it very easy to control in the rough parts as you don't have to hold the steering wheel or fight it. It is worth it if you ride in places where your front end would make sudden movements (sand/mud) or be hit hard by solid objets (roots, ruts, trees, rocks ect. ect.).
Again, thanks for all the input. I'm betting you are right on about the surging and I hope we get it taken care of.
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