Step 6 · Re-install the Tank
Carefully lift the tank, holding it level, and position it back onto the toilet bowl. Look from the side to guide the newly installed bolts through the corresponding holes in the bowl's rim. Lower the tank slowly until the new gasket rests evenly on the bowl's water inlet. From underneath, install the washers and nuts onto the bolts. The order is typically metal washer, then rubber washer, then nut, but check your kit's instructions. Hand-tighten the nuts first. Then, using a wrench, tighten each nut a little at a time, alternating between them to ensure the tank is pulled down evenly and without stress. Continue until the tank is stable and does not rock.