Oil Level Check
Always allow engine to cool down to ambient temperature
before starting any work on the lubrication system. Severe burns and scalds may
result from hot oil coming into contact with the skin. Switch off ignition and
remove ignition key.
To assure that the engine does not turn by the starter,
disconnect the negative terminal of aircraft battery. Before checking the oil
level, make sure that there is not excess residue oil in the crankcase.
Prior to oil level check, turn the propeller several times
by hand in the direction of engine rotation to pump all the oil from the engine
to the oil tank.
This process is completed when air flows back to the oil
tank. This air flow can be perceived as a gurgling noise when the cap of the
oil tank is removed.
The oil level in the oil tank should be between the two
marks (maximum/minimum) on the oil dipstick, but must never fall below the
minimum mark.
Replenish oil as
required, but for longer flights, replenish oil to maximum mark to provide for
more of an oil reserve.
During standard engine operation, the oil level should be
mid-way between the maximum and minimum marks a higher oil level (over
servicing). Oil can escape through the venting (breather) passage.