Based on the manual you have referred to me, i took a photo below of where i think the diaphragm is. If this is the one, how can you tell if the diaphragm does really need replacement ? Is there anything i need to look out for when i open this e.g. spring bouncing out once you've removed the screws ?
G'day Shannon,
As the parts list shows, there is a spring and cup washer behind the diaphragm. It won't come flying out when you pull the cover off though. You will also need a Torx driver bit for those screws.
