between the dogs with practically no
friction at all further investigation is
necessary. Turn propeller by hand in
direction of engine rotation several
times and observe engine for odd
noises or excessive resistance and
normal compression.
e) Check oil level and replenish as re-
quired. Prior to oil check, switch off
both ignitions circuits and turn the
propeller by hand in direction of en-
gine rotation several times to pump
oil from the engine into the oil tank.
This process is finished when air is
returning back to the oil tank and
can be noticed by a murmur from the
open oil tank. Prior to long flights oil
should be added so that the oil level
reaches the “max” mark.
f) Drain off Gascolator for water and
sediment (drain until no water comes
off). Then make sure drain valve is
closed.
g) Check drainage hoses clamps
h) Verify all parts are fixed or locked.
i) Verify all inspection doors are
closed.
Check that the refuelling port cap is proper-
ly secured, then perform the fuel tank sump
drainage operating the related valve which,
after operation, must be checked closed.
Fuel must checked for water and sediment.
Verify the tank vent outlet is clear.
Visual inspection. Check cabin ventilation
inlet and carburettor heating inlet for condi-
tion and free of obstruction. Check stall
strip.
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