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manual leaning w/ AMC carb

Started by lbpa18, July 07, 2010, 08:13:47 PM

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does anybody manual lean with the PS5BD carb (auto mixture control carb)?

Ray Dorsey

If the carb is properly adjusted and the AMC is not sticking ,manual leaning is not


In the Philippines we removed the AMCs and always leaned manually.  Here we adjust the AMCs rich to allow some manual leaning at normal cruise altitudes; ie 6,000-8,000'.  I've seen AMCs set too lean, resulting in overly lean mixtures at altitude.