2005 200hp Optimax. Engine suddenly lost power and quit. Got home removed cowling and flywheel cover and found 5 of the 6 bolts holding the air pump pulley on had sheared off at the head. Belt was off and chewed up. The bolts did not come loose because the threaded part was still tight in the air pump housing. Has this happened to anyone before? Does anyone know the cause of the bolts failure? Thanks
