Installation instructions are as follows.1) Remove grease zerks from the clutch.2) Rotate the inner drive sleeve so that the holes in the drive sleeve line up with grease zerk mounting holes.3) Install the clutch on tractor so that the grease zerk mounting holes are in line with the hole though the tractor pto shaft.4) Line up the grease zerk holes over the tractor pto shaft and install the spring roll pin.5) When the clutch is turned in a clockwise direction, it should overrun driveshaft. When turned in a counterclockwise direction, it should engage the pto shaft.