thanks david, for the advice. i get that mc 18 without the manual book, so is difficult, even worse, no one understand nsr 250 here, and rare to find the person could rebuilt it.

what im going to do is to buy a manual book, or info from any one. if u have a manual book according mc 18 r2j/r4j i would love to buy it. specialy with english.

i have check but i am not sure, that one is mc 18 r2j wiring diagram.

thanks man.