"Tune ups" are just doing periodic maintenance. New spark plugs, clean/replace the air filter if dirty, maybe run some Techron fuel system cleaner in a tank of gas to clean the carbs out a little. No need to mess with a fuel pump or thermostat if they're working fine. If the bike isn't running right, maybe taking the carbs off and giving them a thorough cleaning could help, but since you say you're a newb (no harm in that), that might be best left to a mechanic or a friend that knows what they're doing.
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