The worst thing for a bike is for it so sit unridden for long periods of time, however it is virtually impossible to know if there will be any problems until it is already yours. That is a great price. Maybe get him down a few more dollars by explaining that the seals might bust to due to lack of usage. That is what I would do.

 

I recently just bought an 02 sportster that had not been ridden since 03. (you can probably find my old thread on here somewhere). It also only had about 700 miles on it. Every bike is different, but I can tell you some things I faced and hopefully it is helpful.

- Gas is definitely junk. Had to clean tank, petcock and carb fully (Petcock might not have been needed, but better safe than sorry).
- Oil Change
- Transmission/Primary Fluid
- New Battery (you mentioned this is included)
- Don't know if this is true, but I was told to NOT use synthetic, especially for a bike that has been sitting. I did not have to change any engine seals and have not found a leak in over 800 miles of riding with regular conventional oil.
- My forks were OK, but I was worried about it so make sure to check them. If mine were OK after over 5 years than I imagine yours are fine if garage kept.
- Brake Fluid: mine was fine, but I changed it anyway (better safe than sorry)
- I also changed the oil a second time after like 500 miles and I recommend you do this as well. It is cheap, and the oil that came out was not that pretty to look at.
- I also found that running some Seafoam in my gas for the first few tanks was helpful.


Good luck.