just checked bike, can't be ridden. If I sit behind the bike looking forward, I can see the swingarm. Well at the back of each side of the arm is a bolt that goes inside the arm, with a hexagon type screw to push the block inside forward to adjust chain slack. Well on the right hand side, the block seems to still be in place, but further back the end of the swingarm is now exposed, with the bolt pretty much all visible, and a piece of metal is wrapped around it halfway down, seems to have shattered. I recall it was hanging off the back, it's a rectangular shaped metal piece that slotted in the back of the swingarm to stop dirt going in I presume. Is there a name for this part? I'm going to drill the remaining piece of it out tomorrow and see if the bolt still functions and pushes the block, but I don't know if that rectangle is needed or is just there to stop dirt/ water getting inside? First picture is the good side on the left, the piece I am talking about is right on the back of the arm with the bolt sticking out. The other two pictures show the exposed bolt and remaining piece of whatever the piece is called 






