What year is that FZ1?
I ask because if its a 2007 or early 2008 or older it could be the epoxy resin that hold the magnets on the inside of the alternator flywheel failing allowing the magnets to move or come loose. If it is that then you need to stop riding the bike immediately! Below is a video of the same part og a 2007 the failed badly.
I ask because if its a 2007 or early 2008 or older it could be the epoxy resin that hold the magnets on the inside of the alternator flywheel failing allowing the magnets to move or come loose. If it is that then you need to stop riding the bike immediately! Below is a video of the same part og a 2007 the failed badly.