the main body slots in to the flush pin frame one way only the slot in the button body facing the back of the cistern.
insert the first button over right pin then the quater moon shape button over the other pin locating the click in arm into slot press down until it clicks. To remove these button push down the small 3ltr flush button then finger nail or small electrical screwdriver under the quarter moon button and gently prise it up from the securing slot.
bob, October 2010
