4500 RPM lean surge

[dietDrThunder]

I'm sure I've read about this elsewhere, but I can't seem to find it with search. Could someone please point me to threads/info/web pages/whatever to learn about what causes this and how to fix it? Mine has gone from barely noticable to very irritating over about 10,000 miles, and the throttle body sync didn't help it.

Thanks!

 

[TenereRetiredSoldier]

HI. I just put a post out where I'm experiencing surges and stalls. My 2013YST is at the Yamaha dealer and they are trying to find an answer with Yamaha USA. Nothing yet. They can repeat the stalling and surges, but no answer as to why. Good luck!