Those bloody fzr1000 and 750 engines make some shit sounds!! It’s all because Yamaha were too slack to put a alternator / starter chain tensioner in there. Other manufacturers do it Kawasaki and Honda Suzuki have the best idea. IMO in they dive the alternator off the clutch basket on some model( RF 900) and the starter is next door set of gears and a sprag clutch simple this gives them a nice 6 brg crank with out all the piss on if another chain buried deep and in yamahas case a noisey bastard Glad they sorted it on the R ones!?