I have that desert sled XR630R a guy gave me. I am starting to restore it and noticed it has a manual decompressor but there is a little arm with a spring on it on the rear top of the head in the center...whats this for? It isn;t hooked up to anything but is there...??? Plus, anyone know where I can find online parts fisches?? Id love to be able to find exploded views of both my 96 and 92 online free!!!!