8. If the rollers are dirty, clean them by using a cotton swab soaked in isopropyl(rubbing) alcohol. Turn the rollers with your finger and continue swabbingthem until all the dirt is removed. Be sure the rollers are still centered in theirchannels after you clean them.9. Remove any fibers from the swab that might be remaining on the rollers.10. Reinstall the ball and the retainer ring. Twist the retainer ring to the lockedposition.11. Reconnect the mouse cable to the computer.12. Turn your computer back on.32 User Guide