I have owned a 2006 DRZ400S since new. I have yet to turn a wrench on it in 5000 miles except for maintenance. I purchased a KLX400 from a friend just before he passed away. The carb was full of trash and it would not run. I pulled the carb off and put in new rubber and cleaned it up.
Afterward:
The engine would run, but the engine bogged down on acceleration.
It idled at 2000 RPM when the throttle was closed, going back to normal in 10-20 seconds.
I pulled the carb again with intentions of modifying it according to what I have read on the internet.
1. I installed a Dynojet Stage 2 kit.
2. I did the air box mod, removing the snorkel.
3. I have removed the deceleration enrichment valve.
4. I have new gaskets and accelerator pump rubber.
5. The exhaust is stock
My problem is the pilot Jet (slow) is supposed to be enlarged. Do I change the Pilot Jet (Starter), too? If so, I am still not sure how much. I have a 45/65 in it now, and I have seen recommendations of 48 to 100 for the slow pilot and ocassional mention of changing the Starter Jet. I have been hunting all over the internet looking for a source for the pilot jets. I believe the Keihin link has the jets I need, but which? The 15 mm and 7 mm jets look exactly like mine.
http://www.keihincarbs.com/images/getti-serie3minimo.jpg
this bike has practically no miles on it, and I am looking forward to trying it out. Scott, the former owner was always saying how the carb was the heart of the bike. I hope so, so far it has been misery.