Well, unless they stripped the threads for the oil filter, I wouldn't expect any damage at all. Why do you think the "lower cam shaft bearings" are damaged? I ask, because there's no such thing as a "lower cam shaft". I think you're making that up or don't really know what you're talking about. If you're just overly paranoid and looking for something or someone to blame for a fictitious problem, then there's lots of things to point to.
If the filter blew up from too much pressure and put debris in the engine, then I'd be worried. Or if it didn't sit correctly and leaked oil. But most spin on filters have pretty much the same internals, save for the drain back valve, bypass valve, overall size, and mounting threads. Clearly the bike has been running for the last 2000km and you haven't had catastrophic engine failure, so you should see if the dealer will provide you with a free oil change with the correct filter as compensation.
Getting a new engine and certainly a new bike is out of the question. That's not going to happen. If you could PROVE that the oil filter damaged something, Kawi will pay to rebuild the motor and fix the issue. Document what happen in the warranty claim for the future, fix the oil filter problem, and move on with life. Enjoy the bike because you'll be fine.
If the filter blew up from too much pressure and put debris in the engine, then I'd be worried. Or if it didn't sit correctly and leaked oil. But most spin on filters have pretty much the same internals, save for the drain back valve, bypass valve, overall size, and mounting threads. Clearly the bike has been running for the last 2000km and you haven't had catastrophic engine failure, so you should see if the dealer will provide you with a free oil change with the correct filter as compensation.
Getting a new engine and certainly a new bike is out of the question. That's not going to happen. If you could PROVE that the oil filter damaged something, Kawi will pay to rebuild the motor and fix the issue. Document what happen in the warranty claim for the future, fix the oil filter problem, and move on with life. Enjoy the bike because you'll be fine.