This is a silly question, but... I have an '02 919, I was wondering if I take the top fork bridge off will I need to raise the front tire off the ground? It shouldn't be an issue if I don't loosen the lower pinch bolts, right? Sorry for the amateur question. Thanks for any help.
No, it won't be a problem... Provided there's no damage or other issues with your front end and you leave the lower tripple pinch bolts alone.
If the fork tubes are even a little bent or out of shape, you might
have problems getting the top tripple back on, but it's highly unlikely if you're not having any odd front end issues right now.
Just be sure to keep the bike stable.
Use a paddock stand (rear stand) or center stand if you have it.
If you're really
concerned you can take the weight off of the front a little
by placing a trolley jack with a block of wood under the headers, under the motor.
There's really no need to do this, but it might
help you feel more confident about leaving the bike that way, plus it might help stabilise the bike while you're messing with the fork tubes.
Don't mess with the head bearing nuts unless you know what you're doing.
No offence meant here, but if you need to ask the question in the first place, (and there's nothing wrong with asking) then you're probably not ready to mess with steering preloads etc that's all. So don't mess with 'em.