- Pull the cover off the handle, and place your hand on the lock. Then, turn it anti-clockwise to unlock the collar.
- Pull the collar down, then take the head and twist it clockwise to take off the pole.
- Replace the head with a new refill and place it back on the pole. Then, turn it anti-clockwise to make it secure.
- Pull the collar back down and turn it clockwise to secure it back on nice and tight.