Easy there, big fella. Unless you KNOW the service history of, or have it in writing by the PO, the FIRST and BEST thing you can do is to make it 100% roadworthy and as safe as possible. Fully charge the battery, THEN take it to an automotive parts store that will do a 100 AMP load test. The battery is Critical! Invest in a Battery Tender to keep it juiced after riding and parking it. Check the sidewall 4 digit code for the week & yr. of mfg. REGARDLESS of how much tread, or how they LOOK, if they are more than 4-5 yrs. old, they are getting hard and losing their grip, and beginning dry rot cracking. REPLACE ASAP. Ditto OEM shock bushings. These affect the ride a LOT. ALL FLUIDS need replacing at least every 2-3yrs, as they all draw moisture. Clutch, brake fluid, final drive oil, fork oil. Change coolant also every couple yrs. I just replaced mine w/ Prestone 50/50. 02-03's, and some 04's with the internal tank fuel pump, have problems with the FPR, or fuel pressure regulator. These have a small diaphragm that develops cracks, making it run rough, cutting mileage in half, and a telltale sign is check your oil. If the level is way high or reeks of a fuel smell, it's bad. DO NOT RUN IT! Until you change the FPR (not too hard), the oil, and filter, then run it around the block and change the oil (not filter) again to rid of all contaminants. $40 well spent insurance, even if it's running like a top now. Also check with the PO to see if the 'Ground Fix' has been done. There are how-to's available showing htis, again not hard to do with some emery paper or a cordless drill or Dremel and small wire brush, and some di-electric grease to retard further corrosion. GOOD grounds are also critical to the performance of the 1800. DO ALL THIS, then come back to us, and we'll help you decide how to spend your $$$ to bling her up. Welcome from central Pa. high atop the Alleghenies.