Do what I did and check by riding not plug colour.
Put a 170 in and ride it on a flat open area, rev from closed to fully open, fast and slow to check for bogging etc.
Change main to 185 and recheck.
If nothing else you will get the feel for a too rich or too lean bike and you should be able to get it close by feel.
I did this and found it to be very good in the determination of the main jet.
All the best ,
Mark
|