I've got this cistern (http://bit.ly/2UEFUM9). The manufacturer provides technical info, but very little useful instructions or manuals!I need to remove the part labelled 750080 (M5 Outlet Valve) to replace washer 750017. I've found instructions to turn the part counter-clockwise to remove it. However, it has part 687171 (Unifill Back Entry Inlet Valve) attached to the top, which prevents me from rotating it.I've searched both the Australian and US Caroma sites, as well as a general web search and youtube search, but haven't been able to find this part in instructional videos or documentation outside of the technical document linked above. I've poked around it, but can't find a release catch, and I don't want to break the thing!Can anyone help me remove 687251, or remove 750080 with it still in place to replace the washer? via /r/DIY http://bit.ly/2W8rdm4
