That he never rides. He's had it for nearly 2 years now, and it just went over 3k miles. Here's the skinny. It's never had its 1st service, never had its oil changed, never had its chain lubed/tightened or cleaned, and it sat outside for the past 6 months unmoved. I am begging him to take care of this, before something goes wrong with the bike. He wants me to do it for him, which i have no problems doing...So my question is, given the terrible "care" this bike has had, what else should i really look into besides the things listed above that may be a bigger problem down the road, say, if i want to maybe buy it from him when i convince him to because he doesn't ride it?