I just completed a 'freshening' of my thrower - scraper blade, shoes, belts, plug, grease/lube, friction wheel, gear/engine oil, differential and all other adjustments. ...So I figure I'd give it a dry run. I started it and ran for maybe 5 seconds then died and would not start again! I took the carb off, cleaned/rebuilt and in the process came across what is shown in the picture below. BUT at the time I just took a pic. I then did a pressure test and was able to verify air escaping by bubbles. Then I did what I thought was a repair using PC7 without having looked at it under magnification. It is only now that the repair is done and I checked my before/after pics at magnification I see that it is NOT a defect....sure looks to me like a purposely drilled hole and maybe I plugged something I shouldn't have. HAS ANYONE EVER SEEN SUCH A THING??
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