Does anyone have one of these, know anything about them, or know where to get parts for them? Thanks.

Some parts you can still get from Yamaha, and here are some other sites for parts:
* * * * * * http://www.VintageNOS.com
* * * * * * http://www.vintagesleds.com/ (http://www.totallyamaha.com/)
* * * * * * http://www.geocities.com/kt_racing_team/vintsites.html (http://www.geocities.com/kt_racing_team/vintsites.html)

Thanks.

What parts do you need? These can be very good sleds if not run right into the ground. Is it a 340cc or a 440? 340 I would guess. Currently I have a 80 Exciter 440 and a '83 340 Enticer at my disposal, both of which run great. We have had them since new, without any trouble at all. The 340 can be run wide open into almost any situation and be stable due to it's wide ski stance.