Doesn't look like top pulley, more like crank pulley that drives the three camsafts, nut has dropped off and pulley has worked its way along the nose of the crank and pushed through the casing, just whip the front cover off and fill hole with isopon, pop the nut back on with some loctite, refit casing and you are mobile again until MMC sort a permanent repair
Last edited by Easter; 12/09/13 06:20 PM.
