HRR2168VKA wont hot start

[Chronosnight]

I have a Honda HRR2168VKA that I purchased in 2011, it's been a great mower and still starts right up first pull and runs great however after it's hot I can't get it to restart.
I have thoroughly cleaned the carb twice.
Replaced all gaskets for carb.
Replaced fuel lines.
Treated fuel.
Replaced coil and plug.
Replaced air filter.

It would be great if anyone had any ideas on what else I can try?

Thanks in advance!

 

[bertsmobile1]

Check the valve lash

 

[mechanic mark]

https://www.google.com/search?q=how...e..69i57j0.33068j0j4&sourceid=chrome&ie=UTF-8

 

[Chronosnight]

Thanks for the fast responses, I followed the link, and adjusted the valves, they were a just a little loose, it seems to run smoother! Still wont hot start. I was reading about the auto choke, should I try replacing that?