I just hit 600 miles today and after looking at the manual there was nothing special about what they were going to do at the dealer, other than charge me over $200 to essentially change oil + filter, and adjust/lube chain. That's baby stuff. I changed oil and filter this morning with full synthetic Shell Rotella T-6 and K&N filter, and lubed chain (didn't need adjustment) and then checked all fasteners for tightness (none needed adjustment). Total cost, less than $30 and I know it was done right. Your choice. My experience with Japanese bikes are they are pretty bulletproof if ridden sanely and maintained with timely oil and filter changes.
The only tricky part is getting off the factory filter if it was put on too tight. I had a devil of a time with a previous FJR getting the filter off, but no problem with the FZ6 this morning. Just be sure to have a good filter cap wrench fitting, if it isn't a good fit, or wrong size, and rounds the points off of the filter cartridge you'll have to resort to a strap wrench and there isn't much room down there to fit that type of wrench. That's why I like the K&N aftermarket filter, it has a very convenient 17mm nut attached to the can, the same size as the drain plug. Only one tool needed to do the oil change, a good closed end 17mm wrench. Filter bought through Amazon, the oil at good old Walmart. Simple.