Hey im looking to give my ATV a tune up for the upcoming bow season. It is a 2000 Yamaha Big Bear 400 and i haven't done anything to it maintenance wise for 6 years (it just sits in our barn at a vacation house), lol. It has been used maybe 6 hours a year and has been through lots of dust. I was thinking of going air filter, oil filter, plug, and oil change. how much do you think this will cost? Also, anything else i can do to make sure she is tuned up and running good?