You might think about draining the gas tank and refilling with fresh, then run the next few tanks with the recommended Seafoam mixture, just to clean out all of the fuel related components...it's especially good for all those tiny micro sized passages, idle jets, etc.
Then, as suggested, check the brakes.
Check all fluids.
Air up the tires.
Check the battery fluid level (if not maintainence free)
Grease any available fittings.
Check all light bulbs, brake light switches, etc.