[Motofool]

Originally Posted by Hatter

I'm only about 180m above sea level. so #108-#112 is probably a bit too much. Sounds like #100-#102 would have been a better choice.

Before starting that long and painful process of jet-testing, consider that other things should be in order for a proper carburetor's tuning, such as fuel level in the bowls (float's height), non-leaking boots (no air intrusion), plumbing of the fuel (including venting of the tank and internal fuel filters), spark plug's gaps, air filter cleanness and valve's clearances.

Please, take a look at these:

http://faq.ninja250.org/wiki/I_want_...uretor_jetting

http://faq.ninja250.org/wiki/Removin...re_screw_plugs

http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F

http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F