Yesterday I bought a 1998 620 RXC, 2400 miles. The owner had the shop install an oversized gas tank, other than that it is pretty much stock. The battery is dead but he says all it needs is to be charged, so I had ot kick start it all day yesterday. The only thing not working seems to be the speedometer. The cable seemed connected at both ends, but I didn't get a chance to give it more than a visual inspection. Is this a common thing to break? I have the feeling they disconnected something at the shop while installing the new fuel tank. My other question is where can I find replacement parts for this bike? Looking at various sites like Cyclehutt and others I can't seem to find htis bike listed as a 620. All LC4 motors seem to be 640cc... are they just not listing parts for the 620? Is this bike considered the 'Adventure' model or Enduro? Whats the difference?