Just check the basic stuff. Motor wise. Look it over for any signs of leakage.do a compression test if you can. Check far any case damage. Check the trans oil level. Check the coolant level and make sure it's not strait water. If its strait water, it could be a sign of a coolant system leak. Check that the rims are strait with no loose spokes. Check that the forks are not twisted by sitting on the bike with the bars strait and looking down the front at the tire. Other then that, just look the whole bike over for anything that looks out of place.