When sitting facing your saw, on the rear left side, there is a slotted screw with a lock nut on it. For some strange reason they manage to get out of adjustment. All you have to do is loosen the lock nut, using a straight blade screwdriver turn that slotted screw out until the arm won't stay up. Then turn it in until you get the desired amount of "drag" on the arm when lifting it. Do it a couple of times to make sure it's where you like it. Then, while holding tension on the slotted screw, tighten the lock nut. If you really feel good about going farther, you can take that slotted screw all the way out and apply a tiny bit of grease to the ball bearing that is in the end of the screw to lubricate it. Then follow the instructions as to adjust the tension. It will be different now that it has lubrication on it. Good luck and ask questions if you have any.