Originally Posted by nigelcorn
Yeah, I'd planned on putting a new plug in. I'll see what's going on with the jetting. I haven't seen a lot of spark plugs before so I don't have much experience, but this does seem to have a lot more carbon build-up than the others I've seen.
I really hope it isn't burning oil, I've already had to deal with one bike burning oil that turned into a nightmare.
When was the plug last changed?
Just keep an eye on oil level. See if your buddies see puffs of smoke under hard acceleration, etc.
These bikes are pretty tough.