this is so simple awais. One turn is equal to 360 degree complete turn.
Tighten up the screw to its full length first and then start opening it down. You require total two turns means two times 360 degree turn of your screw driver. I was previously running my bike on 1.80 turns almost but I felt by bike is not crossing 110 mark. However, I didnāt get a chance to twist the throttle more because of winter and traffic as well but yesterday I made it set at two turns and my bike is returning me average of around 50km. Fuel average of this bike belongs to fuel screw so if someone open it down further, he must will face bad average.
I donāt understand that why yamaha engineers want to mess this screw and if it had to be around 3 or 4 turn then why it was set at 1.5 turns in start and why did they claim that it will return average of 50km. There are so many unanswered questions. As per my understanding, fuel screw will have to stay at the same settings or somewhere near those settings set by factory. I hope you understand that how to adjust fuel screw and I donāt need to perform a demo. If you still require a demo then I will prefer to call you to teach itās settings but first mark your settings set by yamaha guys.
