I've found from experience that if the cutoff lever is not engaging and disengaging properly, the gun won't fire and you'll get the double beep and everything will stop working. Install the cutoff lever and the sector gear with the ASCU micro switch. Turn the sector gear until the cutoff lever engages. See how much the ASCU lever moves up, and if it doesn't go as high as it can, bend the cutoff lever until it does. You might have to file the end of the cutoff lever a bit for it to function and fit. Keep doing this until the ascu lever can move almost to the end of it's travel. Be sure that it also can go back to rest without the ascu lever engaged.
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