Aquatech Booster Pump - How to Replace Diaphragm

[LittleMaui]

Noticed the psi is actually dropping when my booster pump turns on. Does anyone have instructions for replacing the diaphragm? The pump appears to be turning on and off correctly.

 

[kenbennedy]

I haven't done this myself, but I think this video shows the diaphragm coming out...

 

[LittleMaui]

Thanks