Lycoming O-320 76 Series Operator's Manual page 6

Proper service and repair is essential to increase the safe, reliable operation of all aircraft engines. The
service procedures recommended by Lycoming are effective methods for performing service operations.
Some of these operations require the use of tools specially designed for the task. These special tools must be
used when and as recommended.
It is important to note that most Lycoming publications contain various Warnings and Cautions which
must be carefully read in order to minimize the risk of personal injury or the use of improper service
methods that may damage the engine or render it unsafe.
It is also important to understand that these Warnings and Cautions are not all inclusive. Lycoming could
not possible know, evaluate or advise the service trade of all conceivable ways in which service might be
done or of the possible hazardous consequences that may be involved. Accordingly, anyone who uses a
service procedure must first satisfy themselves thoroughly that neither their safety nor aircraft safety will be
jeopardized by the service procedure they select.
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LYCOMING SERIES OPERATOR'S MANUAL
IMPORTANT SAFETY NOTICE