How to replace flapper on kohler toilet model K84591

SOURCE: not the float

Had a similar problem with a Wellworth after changing out all the replaceable parts. The new triangle gasket + nut kit was missing the flat anti-friction ring needed to allow the plastic nut to be hand tightened enough against the rubber gasket - without the ring the friction stops the nut turning, and you get a leak because there isn't enough pressure on the gasket. Retrieved the old ring from the trash & put it in - works perfect now! not sure if this is your problem too, but you might want to check the locknut / gasket tightness & seal.

SOURCE: I have a 10 year old Rialto model with a elongated

Found your part: http://www.kohlerserviceparts.kohler.com/AccessoriesInformation.aspx?ServicePartID=f5a368efd5b74bcfae7fa0d0bb69bd39

SOURCE: Kohler toilet model # K84591

all three of my new kohlers do it its not the valve or the float look closely and you will see a kink in the chain going from the lever to the cyl. terrible design and there the only ones I have seen with this design I have bought my last kohler product they could have fixed it for a nickle instead they lost a customer for life

SOURCE: i have a kohler model

Try adjusting the float level. The float is what tells the toilet to stop filling. If the float is set too high, then water will just go down the overflow tube and never be able to get to the level it needs to turn off.