Kohler VEIL K-5402A-0 Installation Instructions Manual page 21

13. To remove the discharge valve, rotate valve along
the arrow direction, as shown. It should make a
"click" sound when installing or removing.
Loosen filter locknut, as shown.
Clean filter dirt with water and tighten locknut back in
original position.
Kohler Co. March 2016 21
Outlet valve
1266554-A02-A