this is for you guys who clutch is slipping and your wanting to get more tension on the real clutches spring and not a little spring under the pressure plate. You can do this with the engine on the bike if you have room on your build. picture of the engine out of the frame the part I'm going to remove is the clutch cable mount on the back of the engine this is the part we are going to adjust its the retainer that compress the clutch spring which is to the right of the screwdriver this is the shaft taken out of the engines case so you can see it there is 4 slots that you can get a tool into to hold it while you rotate the main shaft to the right to tighten it putting more pressure on the clutch here I'm doing the tightening of the spring you might need help holding the tool into the tabs while you rotate the sprocket nut to the right which will put more pressure on the spring and more pressure on the clutch see the spark plug tool being used as it fits the nut on the front sprocket. I also removed the spark plug don't need it starting up and it will easier to turn. in this picture I'm holding the retainer with a punch.