To discover exactly which parts you require use the on-line schematic exploded diagram - it will even give you some idea of where and how to fit those new parts.
The largest parts list ( JET UNIT ) contains sixty-four products for this SJ650P 1991 EW2 SUPERJET USA.
The Yamaha SJ650P 1991 EW2 SUPERJET USA parts-list contains six hundred sixty-five parts.
