Might want to clean the power valves, or at least check them, info on this is in the tech section. Pull the carbs, clean, or at least check for varnish and build up. Pull the jets from the carbs and give them a good cleaning, again, this is in tech section. Grease all Zirc fittings for steering and suspension. Just give it a good lube on all moveable parts (linkages, bearings, etc....) with a good Low Temp White Lithium grease. You'll know if anything needs to be done with the clutches (springs, shoes, buttons, etc...) as performance will suffer and you'll notice this once you start riding, although it is not a bad idea to remove the clutch and break it down and give it a good cleaning, as belt dust tends to buil up in there after a while, again, clutch removal and breakdown can be found in the tech section. Might want to also check the sliders/hyfax (they are the long plastic slides on the bottom of the suspension rails) to make sure you have good meat on them. Anybody else feel free to add to this as I am sure there is much much more.... -Steve (O.C)