How do you adjust rear suspension

[offcamber]

The fellow I bought my GS off of was a lot smaller than me. He had the rear suspension set on the light side. I want to crank it up a bit especially since I occasional carry a passenger and its just too soft. I can't figure out how to get the spanner in there to move the adjustment ring.

Is there a trick? or do I need to disassemble have the bike?

[offcamber]

I see this topic has been beat to death....should have done a search first  ....sorry

[Twism86]

I used the info on the wiki page http://wiki.gstwins.com/index.php?n=Upgrades.RearShock

My only question is how do you know which setting your currently on......?