1. Drained oil. Added 8 quarts of Aero shell W 100 Plus oil. Replaced oil filter Tempest P/N AA48110-2. Opened oil filter, no metal particles found.
2. Accomplished cylinder compression Test: No.1 (78/80), No.2 (78/80), No.3 (76/80), No.4 (78/80).
3. Cleaned, tested and re-gapped all Spark Plugs as required.
4. Replaced (1) cowl mount with new P/N 08-07460.
5. Ran engine and checked for leaks and its performance.
All maintenance performed on this Engine was conducted in reference with Lycoming Operator's Manual Model O-320 Series, and the current regulations of the Federal Aviation Administration and is approved for return to service with respect to the work performed.