Replacing hose on a Kohler model numbe K- 10433

William, you or a plumber will have to replace the cartridge and seals to stop the leaks. The parts may have life time warranty, check your manual if you still have it. Check the attached links,instruction and guides, Good luck
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There is no small disk behind the aerator in the pullout handle of the K-10433. Where is it? Please help!

Remove sprayer and hose from faucet body.
Remove handle and cartridge.
Pull up on body.
Replace parts and reinstall in reverse order.

after you take the handle off,the hose needs to be taken off for the faucet body to be pulled up to get at those o-rings

Having the same problem and just found the spec sheet. Going to try to repair today. Hope this helps!
http://www.us.kohler.com/onlinecatalog/pdf/1013943_4.pdf

If there is a hole on the spout itself then you should go ahead and replace th.e whole faucet. This will save you both time and money in the long run

How do I take my faucet apart , I have a leak when I change it back and forth between spray and stream ?

replace the faucet if thighting the fittings does not work

Either the model number is wrong, because the K-10433 have a filter.

there is an oring in that connection that is most likey bad. turn water off and disconnect coupling to spayer. remove the black oring and match it up at your local hardware store. when installin it lubricate it with vaseline for ease of insatlltion and to help protect it during installation.