Kawasaki Zx636 engine for spare/repair. Engine was removed from an accident damaged bike and has been sitting around for a few years. As can be seen there is damage to the alternator side and a dented oil filter. I removed the cover to see how much damage underneath as shown in photos. Unfortunately on removing the cover the starter motor idler gear came out and I heard some drop into the crankcase, so this would need checking before attempting to start.