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Compare the part number on the magneto adapter pad with the
parts listing for your engine. There are at least two different magneto
adapter pads used on Lycoming engines. One magneto adapter commonly used
on 4 cylinder Lycoming's is 0.8 inch thick. The commonly used one for six
cylinder Lycoming's is 0.9 inch thick.
If the 0.8 inch thick adapter pad is installed on a six cylinder
Lycoming then the magneto rotor bottoms out in the engine and this loads
the magneto bearings. Eventually the magneto bearings fail |
