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Discussion Starter #1
As you can see, I don't have an airbox and this brass fitting on the carb (center picture) was plugged when I bought the machine. It looks more important than that, what connects to this, Just air intake, or is it vacuum, or is it nothing important like the previous owner thought??
IMG_20201008_162158481.jpg
 

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So is that like an emissions thing - vapor recovery?
No, It's not an emissions thing. It equalizes the pressure pulses on the bottom of the enrichment diaphragm. Since yours is plugged, there must be a vent somewhere to allow the diaphragm to raise so you can accelerate.
 
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