Plastic emulsion tube questions

#1
I've been having a lean problem on my 6 HP Powersport. I'm thinking the end of the plastic emulsion tube that protrudes into the throat of the carb is closed off.

Is this supposed to be open? I'm thinking it is. How else would it draw fuel from the bowl?

If it is supposed to be open, any idea as to how large the hole should be?

Thanks!
 
#2
OK, my answer is 'yes, it does need to be open'. I started with a 1/16th drill bit. Now it runs fairly good at 1/2 choke. Once it cools down, I'll keep enlarging the hole until I get the results I need.
 
#3
I should have used my head. The tube needs to be completely open.

That taken care of and a new belt for the torque converter, I was rewarded with some fat tire rubber melted to the garage floor. It also climbs the hill in front of my house quite nicely.
 
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