I have a 2012 KX250F that up till now shifted pretty easily. Recently it seems shifting has become more difficult, like it's stiffer and I really have to ull up on the shifter to change gears. I tried making the clutch cable tighter show it pulled in more on the clutch but that really didn't seem to correct the problem. I always though clutch problems were more slippage related. Could this also be a clutch problem?
Is there an adjustment on the side of the engine cover? My hondas have a adjustable pressure leaver inside the right engine cover. Theres a bolt n jam nut located on the cluth side cover that pushes the lever in or out to adust pressure due to wear. Maybe ur bike is similar really most clutches are.