Happytime NT carb Slide Jamming

[AussieSteve]

the reason why the mixture got richer is because the washer is allowing the jet needle to come out of the jet further. The jet needle is being raised out of the needle jet by the thickness of the washer that you used.

Don't be silly. (Excuse me) The washer is in the TOP of the cap. It has nothing to do with the needle height!

 

[AussieSteve]

Sorry MotorPsycho, I didn't mean to sound rude. I don't think that you understand where the washer is. Here's a quick sketch:-