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Old 07-25-2020, 04:05 PM   #43
geezer#99
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Join Date: Aug 2009
Location: Bowser
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Re: 78 Suburban surging then dies on long grade

The Allen key is the lock screw.
The flat headed screw is the adjustment.
When adjusting don’t remove your flathead screwdriver unless the lock screw is tight. If you don’t the spring can rapidly unwind and pop off the retaining pin.

Maybe the float drop is set too low. There’s two settings. Level and drop.
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