Make sure the engine is cold. Take off tank, and wash the engine's top & framebits as the bare minimum. Take off the valve covers first, then take out plug (so the small bolts cannot fall into the cylinder-duh).Put bike on a stand (jack, not sidestand), and put it in 5th gear.ook off the valve covers and turned the engine round quickly from the flywheel, seems the loud click is coming from the rhs exhaust valve rocker. As the rocker comes up shutting the rhs exhaust valve it's like a metal clinking.