Mileage: 6500km Valves checked at 5000km and were good. So a couple weeks ago I noticed a vibration coming from the motor, and immediately went on a hunt in the forums for known issues. Found a few that seem to get a lot of talk 1. Counterbalancer nut & woodruff key 2. Cam Chain & Tensioner 3. Motor Mounts So we pulled the cases, checked the counterbalancer. Woodruff key fine, and was torqued to spec. Used some Loctite & torque back on. Checked the woodruff key on the crank as well, nut was torque properly. Replaced and torqued to spec. Clutch basket had no wobble. Pulled the CCT and it was out 7 clicks. Reset and reinstalled. 1 of the top motor mounts was loose. Replaced with Nylock and tightened up Put it all back together and the vibration is still there. Feels like rumble strips, but its constant, not intermittent like what most people report with the counterbalancer issue. At this point Im at a loss. Im the second owner (since 700km) and have maintained well. Oil changes every 1500-2000km (its a supermoto so it gets ridden hard) The only thing that comes to mind is that the previous owner had the oil overfilled a little bit. No idea how many KM were put on with too much oil, but couldnt have been too many. I could probably change the cam chain, but I honestly dont think thats the issue. Does anyone have any idea's on what else to check?
Having a little extra oil shouldn't cause a problem. The motor will push out what it wants to through the breather. Did you pull the clutch basket and have a look at the spring washers? I'd look at the oil pump and the water pump / impeller blades too.
