Unscrew the button or screw that retains the cope with in position, eliminate the handle, then unscrew or remove deal with plate. This exposes the overall body and spindle. If there is water in the top of spindle and the outer system is wet, it’s a sign the O-ring is leaking.  https://blocked-drains50479.get-blogging.com/35113505/local-plumber-near-me-secrets