Honda Harmony HRB215-FH, engine stops after 20 min. of runtime

[bazar01]

I think I will try to bypass the fuel cut off device and run a fuel hose from the fuel tank straight to the carburetor.
And see if it runs until the fuel tank is empty. :laughing:

 

[bazar01]

Success!
I was able to finish mowing in 45 minutes and this thing still keeps running.
I had to stop it. :laughing:

 

[bazar01]

It has been running great so far with no interruptions.
I ran a fuel line straight from the fuel tank to the carburetor and also drilled a small vent hole in the gas cap.
Not sure which one fixed the issue but it's running continuously now and able to finish mowing the yard in one run.