pick your manual http://www.spyder.tv/section/support...s_manuals.html
where's the diagram that came with it? make sure you have the proper allen wrenches to take the grip frame off the marker body.
degas your marker. Look at the back. In between the top and bottom tube is a pin that goes through the center of them...from left to right side. Remove the pin but be careful, everything's under spring tension. Remove the back-plate. pyll the bolt back and out of the marker. It's connected to the striker (hammer) in the bottom tube. Oil all the Orings you see and reassemble in the reversed order it came apart.