Uploaded May 2016 | Updated September 2026, 2 weeks ago
Large 3" Flush Valve and Gasket Kit by Korky | korky.com/parts/flush-valve-replacements/large-3-4-flush-valve-tank-bowl-gasket-kit
Hello and Welcome to Korky Toilet Repair.
Today we are going to install your new Korky Large Adjustable 3" Flush Valve & Tank to Bowl Gasket Kit. The first step is to shut off the water supply to your toilet. Next flush your toilet. Mark the water level in the tank with a pencil and drain the excess water. Sponge out the remaining water in your toilet tank. Place a bucket underneath your toilet tank to catch any excess water. Disconnect your water supply line. Locate and remove all old nuts, bolts, and washers from the toilet tank. Carefully lift up on the tank and remove it from the bowl. Remove the old tank-to-bowl sponge gasket. Remove the old mounting nut and pull the old flush valve and flapper out of the toilet tank. Measure the tank hole using the rule on the instructions. If the tank hole is 3 7/16 inches or larger, place the black o-ring in the larger groove and center the new flush valve in the tank at the same angle as the old flush valve. Place your new Korky flush valve into the toilet tank, and hand-tighten the mounting nut. Place the new red sponge gasket over the mounting nut threads. If you have a Jacuzzi brand toilet, cut the sponge gasket on the seam with a knife, then discard the beveled bottom. Place the sponge gasket over the mounting nut threads. Carefully set the tank onto the bowl. Use the new bolts, rubber washers, washers, and hex nuts, included in the packaging to attach the tank to the bowl. Apply downward pressure to keep the tank level as you tighten the nuts in an alternating fashion until the tank is stable. Do not over tighten the nuts; doing so may cause the porcelain to crack. Next, set the height of the flush valve. Loosen the locknut and extend the overflow tube until the top of the overflow tube is one inch below the flush lever nut, then hand-tighten the locknut. Attach the flapper chain to the flush lever with minimal slack. Attach the “S” clip onto the black refill tube and attach it to the overflow tube. Reattach the water supply line. Turn the water supply on and let the tank fill completely. Now turn the water supply off and flush. If the water level drops within a half inch of the pencil mark, your installation in complete. If the water level drops below the pencil mark, adjust the arrow on the white band to the next lowest number. If the water level is above the pencil mark, adjust the white band to the next highest number. Turn your water supply on and let the tank fill completely. Now turn your water supply off and flush. If the water level still drops below the pencil mark, adjust the arrow on the white band to the next lowest number. If the water level is still above the pencil mark, adjust the white band to the next highest number. Turn the water supply on and let the tank refill completely. Turn your water supply off and flush. Repeat this process until the water level drops within a half inch of the pencil mark. Your installation is now complete.
Congratulations, you have successfully installed your new Korky Large Adjustable 3" Flush Valve & Tank to Bowl Gasket Kit.
Thank you for choosing Korky.
If you have any questions or need further assistance with your installation, please visit our website or call us at 1 800 528 3553.
Large 3" Flush Valve and Gasket Kit by Korky | korky.com/parts/flush-valve-replacements/large-3-4-flush-valve-tank-bowl-gasket-kit
Hello and Welcome to Korky Toilet Repair.
Today we are going to install your new Korky Large Adjustable 3" Flush Valve & Tank to Bowl Gasket Kit. The first step is to shut off the water supply to your toilet. Next flush your toilet. Mark the water level in the tank with a pencil and drain the excess water. Sponge out the remaining water in your toilet tank. Place a bucket underneath your toilet tank to catch any excess water. Disconnect your water supply line. Locate and remove all old nuts, bolts, and washers from the toilet tank. Carefully lift up on the tank and remove it from the bowl. Remove the old tank-to-bowl sponge gasket. Remove the old mounting nut and pull the old flush valve and flapper out of the toilet tank. Measure the tank hole using the rule on the instructions. If the tank hole is 3 7/16 inches or larger, place the black o-ring in the larger groove and center the new flush valve in the tank at the same angle as the old flush valve. Place your new Korky flush valve into the toilet tank, and hand-tighten the mounting nut. Place the new red sponge gasket over the mounting nut threads. If you have a Jacuzzi brand toilet, cut the sponge gasket on the seam with a knife, then discard the beveled bottom. Place the sponge gasket over the mounting nut threads. Carefully set the tank onto the bowl. Use the new bolts, rubber washers, washers, and hex nuts, included in the packaging to attach the tank to the bowl. Apply downward pressure to keep the tank level as you tighten the nuts in an alternating fashion until the tank is stable. Do not over tighten the nuts; doing so may cause the porcelain to crack. Next, set the height of the flush valve. Loosen the locknut and extend the overflow tube until the top of the overflow tube is one inch below the flush lever nut, then hand-tighten the locknut. Attach the flapper chain to the flush lever with minimal slack. Attach the “S” clip onto the black refill tube and attach it to the overflow tube. Reattach the water supply line. Turn the water supply on and let the tank fill completely. Now turn the water supply off and flush. If the water level drops within a half inch of the pencil mark, your installation in complete. If the water level drops below the pencil mark, adjust the arrow on the white band to the next lowest number. If the water level is above the pencil mark, adjust the white band to the next highest number. Turn your water supply on and let the tank fill completely. Now turn your water supply off and flush. If the water level still drops below the pencil mark, adjust the arrow on the white band to the next lowest number. If the water level is still above the pencil mark, adjust the white band to the next highest number. Turn the water supply on and let the tank refill completely. Turn your water supply off and flush. Repeat this process until the water level drops within a half inch of the pencil mark. Your installation is now complete.
Congratulations, you have successfully installed your new Korky Large Adjustable 3" Flush Valve & Tank to Bowl Gasket Kit.
Thank you for choosing Korky.
If you have any questions or need further assistance with your installation, please visit our website or call us at 1 800 528 3553.
