Re: Popping & Banging on the Overrun
Posted: Sat Jul 23, 2016 5:48 pm
Check item number 46, diaphragm, isn't perished with ethanol/age. It's an anti popping valve
https://www.motorcyclespareparts.eu/yam ... 43944.aspx
https://www.motorcyclespareparts.eu/yam ... 43944.aspx