guys i have this Yb 100 carburetor .Japanese made mikuni.
its in excellent working condition , everything in it is original Japanese( u can have it checked from your mechanic).i have this in spare as i bought a new one 3 years back which was also original mikuni, the reason i bought it was that my mechanic told me that u need to change the carb for better petrol comsumption , if i rem correctly i was gettin around 28-35 km from this carb , i was told that if youll put a new one the consumption would be much better but all in vain as im still getting the same so the carb works fine.i like to keep things in their original condition and u can also view this thread for your satisfaction
https://www.pakwheels.com/forums/bikes-3-wheelers/128126-f-s-only-original-yamaha-left-yb100
anyone interested can msg me at 0333-3258887