Performed most of the 100 hour engine maintenance requirement. Magnetic plug had acceptable collection of metal fragments. Spark plug gaps were OK. Replaced engine oil (3 quarts, Aeroshell Plus 4+) and oil filter (Tempest Part number: AA825706). Checked the friction torque of the slipper clutch fo the gear box and got 448 in-lbs. Safety-wired the magnetic plug and oil filter. Opened the oil filter and it was clean.
The rubber gasket below the coolant expansion tank had one end of the loop around a coolant tubing to be cut. There is some weeping of fuel around the 90 degree fitting at the gascolator.
