If you don't have the wrench from the tool kit, use this one -
http://www.motionpro.com/motorcycle/part
A couple of ratchet extensions and universal joint placed in the proper order, will make the job 100% easier.
Starting from the spark plug -
Spark plug socket
3%26quot; extension
universal joint
6%26quot; extension (a longer extension is better)
Ratchet
This is a universal -
http://buy1.snapon.com/catalog/item.asp?