Things You'll Need
Plastic putty knife (optional)
Plumbers putty (optional)
Drain seal (optional)
Kohler is an American company that manufactures plumbing fixtures for bathrooms and kitchens. A Kohler sink drain is mounted in the bottom of the sink and connects to the drain plumbing underneath the sink. Removing the drain may be necessary for cleaning, replacement or repair, and should take a do-it-yourselfer with average skills just a few minutes.
Locate the drain plumbing underneath the sink. Locate the large retaining nut that secures the bottom of the sink drain to the plumbing. Loosen the nut with a pipe wrench in a counterclockwise direction.
Locate the large retaining nut that secures the sink drain to the underside of the sink. Loosen the nut with an adjustable wrench in a counterclockwise direction. Finish removing the nut by hand.
Lower the seal and washer--if they have not already fallen off after removing the nut--from the underside of the sink.
Loosen the ball lever nut on the back side of the sink drain with a pair of pliers. Remove the nut and pull the ball lever straight out of the sink drain. Skip this step if you are not working with a Kohler lavatory pop-up drain.
Lift the drain straight up out of the top side of the sink. Pry under the edges of the drain flange with a plastic putty knife to loosen it from the sink mounting surface, if necessary to prevent marring the sink finish. Remove the drain from the sink.
To install the drain, clean the drain flange and the sink mounting surface with a rag. Scrape old putty from the surfaces with a plastic putty knife, if necessary. Apply a bead of plumbers putty to the underside of the drain. Push the drain into position in the hole in the bottom of the sink. Use a new seal on the underside of the drain, replace the washer and tighten the retaining nuts on the underside of the sink and the drain plumbing. Replace the ball lever on pop-up models in the reverse order of removal.