my son has a 125 nsr and recently started having problems ,
basically it wont rev above 7000 rpm and runs a bit lumpy at tickover.
obviosly checked the plug and was black suggesting running rich,cleaned carb was fairly clean any ideas please, as i havent!!!!!!!
thanks terry
i know these are fairly high tech so wondered if a black box or any other bit of witchcraft was responsible???
by the way its a 2000 model import unrestricted.