I need to lower the engine if I can otherwise take it out. I don't have a centerstand on my bike, but I do have 2x4's and a floor jack and maybe other stuff that could help. I'm trying to take out the head and cylinders so it only needs to be lowered a couple cm's if thats possible. I tried finding some tutorial or youtube video, but I was unsuccessful.

Hi there,
You do NOT have to remove or unbolt a GS500 engine to remove the head and cylinders from the bike.
They can be removed with the engine bolted into the frame.
You should look into a shop manual, because that's what it will tell you, too.
Good luck,
Trwhouse 

Really? I have tried to get the head over the long bolts for hours and could not get it over. And I do have manual I didn't realize it showed exactly how to take the engine out. Well I'd rather not take it out then if I dont have to. Is there a trick to getting it over those bolts?(the ones catching are the front left and right)

Hi again,
You should search the site.

Here is a prior post from someone doing the same thing as you.

http://gstwins.com/gsboard/index.php?topic=62371.msg728150#msg728150

Good luck.

Thank you, although that thread didn't help me get it off(a ratchet strap did), it gave me tons of info that I would have had a hard time putting this back together without. Thank you again for the help!!!

It is a tight fit but love taken heads and cylinders off with the engine still in the frame