125-200cc stock wr 125 2000

hi! im new in this caffe...i bought a wr 125 2000 with new motor but the stock jeting is good for all stock bike? what the best way for test it?
thanks

Welcome! I was going to respond to your PM, but I'll do it here. Stock jetting will work well in cold weather, but is a little rich for 20C temps you mention. Did you get an owners manual? Excellent jetting chart in it. I would install a 390 main (400 stock) and a 32.5 pilot (35 stock) to start with.

I pulled out my notes from 2002, here is what I was running in the TMX (2002 WR125) back then...

400 - main
30 - pilot
6DJ8-60 - needle
3rd position - needle clip
1 1/2 turns out - air screw
4.0 - slide

100 Octane rocket race fuel
50:1 full synthetic spectro premix


whats the slide?

Stock slide was 3.0 (richer).

norman where is the slide in the carb, its the ralenti?

sorry for my confusion but my its dont my frist language... the air and fuel flow its the air screw, another its the ralenti, the slide I don´t understand, sorry one more time!

Great idea...............picture good..........Frankenstein bad!

dirtdame you are incredible!thanks a lot but what is 4.0?

Mikuni slides have different profiles at the bottom (cutaway), which make the air/fuel mixture richer and leaner. The lower the number, the richer the slide.... 3.0 richer, 4.0 leaner and so on. The number is on the slide. Your '00 should run well, if you use your '02 jetting specs.

ok norman, I read the importance of jetting in this bike so I want to be a "spec boy"!!!
my rm 125 95 was easy to jet correct, only hi revs...

I'm thinking you must be pretty incredible yourself zanol.

I couldn't converse with you in Portugese if my life depended on it,....
and you have asked a technical question and had it answered!

I'm guessing you're not just your basic ordinary average guy.

thanks man... I do evereything in my bike, I like, I prefer and its cheap.
I dont pay to preparing my bike. my rm shock was rebuilt for me with racetech material...
I know that everyone here has the same taste that I so..I want to feel I`m driven to heaven!