I recently purchased an 82 xt550 that hadn't been operated in a few years. I'm charging the battery, but I don't know if it's a 2 or 4 stroke for the oil that I need to buy. Also having a hard time finding the rear tail light assembly, but I think I may be able to find one based on some of the answers that people have given here. If anyone has any suggestions for getting this thing running, and if I can find if it's 2 or 4 stroke that would be excellent. Thanks in advance.

I recently purchased an 82 xt550 that hadn't been operated in a few years. I'm charging the battery, but I don't know if it's a 2 or 4 stroke for the oil that I need to buy. Also having a hard time finding the rear tail light assembly, but I think I may be able to find one based on some of the answers that people have given here. If anyone has any suggestions for getting this thing running, and if I can find if it's 2 or 4 stroke that would be excellent. Thanks in advance.

I think you may need quite a bit of help on this. try here

http://www.yamaha-xt500.co.uk/portal.php

im just guessing but i have reson to believe that its a 4 stroke.