Had a bit of relatively clean mix still in the tank that smelled pretty oil rich., as in what the sticker said. Has been very well maintained with good fuel line and clean filters. I pulled covers and looked it over and all seemed in order as far as I could tell considering I've never looked one of these over before. LOL My luck isn't usually very good getting into older saws for customers so I try to do em when I have a little more spare time than usual., which isn't much to begin with. And this rascal was just an intimidating beast sitting there staring at me with "I dare ya" written all over it. The Super 2 didn't have a good thread left anywhere on it and was basically a basket case. Came with an SXL 925 and Super 2 some of you may recall. Got it awhile back from an area Husky shop who farm out some of their weirder stuff to me. A real nice specimen with only a couple dings here and there. And an excellent point about the gasket covering that recess anyway. No ports, mind you, they would be covered regardless, with the extra large gasket. In comparison, I checked a couple HS's off Huskies.
![homelite super xl automatic running wide open homelite super xl automatic running wide open](http://mas.txt-nifty.com/.shared/image.html?/photos/uncategorized/2009/09/13/2009091303.jpg)
I have never been able to track down info on the function of it. If you blow WD-40 into that port, it enters the Venturi via the idle and transition ports. Mind you, those carbs had a main fuel supply feedIng the L via the H. Supposedly to minimize bogging and the ability to set the L rather lean. This in theory was to back feed fuel into H circuit upon throttle.
![homelite super xl automatic running wide open homelite super xl automatic running wide open](https://www.used.forsale/sh-img/109953725_2903116173133172_1408217770828390726_o_homelite%2Bsuper%2B2.jpg)
In comparison, HDC's (early) had this additional accelerator circuit that introduced impulse through the idle circuit. It is wide open to the idle circuit and is external to any impulse contained by the carb/block gasket.
![homelite super xl automatic running wide open homelite super xl automatic running wide open](https://st.hzcdn.com/fimgs/2e32671e09d8502b_8526-w240-h135-b0-p0--.jpg)
It is not a passage that is opened through an index in the throttle shaft. I have seen those open passages on the rear of some HS carbs Poge.