Kohler K-3493 Guia De Instalacion página 6

Install the Tank (cont.)
IMPORTANT! For Models K-3493 and K-3505 Only: Tighten the
nuts until the rubber spacer makes contact with the top of the bowl
and the spacers begin to compress.
Tighten the nuts until they are snug. Do not overtighten the nuts.
Verify that the tank is level both left to right and front to back.
Make sure the nuts are tight enough to achieve a watertight seal.
1044956-2-B 6 Kohler Co.