Pilots Operating Handbook
34/76
YL-MFG
Revision 7, Issue 1
4/6/2016
WARNING: Takeoff is prohibited with less than
¼
tank of fuel.
Drain at least a cupful of fuel (using sampler cup) from each sump location to check for water,
sediment, and proper fuel grade before each flight and after each refueling. If water is observed,
take further samples until clear and then gently rock wings and lower tail to the ground to move any
additional contaminants to the sampling points. Take repeated samples from all fuel drain points
until all contamination has been removed. If contaminants are still present, refer to WARNING
below and do not fly airplane.
NOTE
: Collect all sampled fuel in a safe container. Dispose of the sampled fuel so that it does
not cause a nuisance, hazard or damage to the environment.
WARNING: If, after repeated sampling, evidence of contamination still exists, the
airplane should not be flown. Tanks should be drained and system purged by qualified
maintenance personnel. All evidence of contamination must be removed before further
flight.
(7) NOSE
1. Engine Cooling Air Inlets - CHECK (clear of obstructions)
2. Propeller and Spinner - CHECK (for nicks and security, if fitted with overload clutch, propeller
should have approx. 30° of free movement)
3. Engine Top Cowl - REMOVE (put in safe location so that wind does not damage it)
4. Propeller - TURN in direction of rotation until oil in the tank blurbs
5. Engine Oil Dipstick/Filler Cap:
a. Oil level - CHECK
b. Dipstick/filler cap - SECURE
NOTE
: Oil level should normally be between 50% and MAX. Do not operate with less than
MIN oil level. Fill to MAX level for extended flight. Difference between MIN and MAX is 0.45
liters.
6. Engine Coolant Expansion Tank Filler Cap:
è
Coolant level - CHECK
è
Filler cap - SECURE
NOTE
: Coolant level in the expansion tank should be flush with the bottom of the filter neck.
Do not operate with less than normal coolant level.
7. Engine - CHECK (check overall condition, any leaks should be thoroughly inspected)
8. Engine Top Cowl - REPLACE (check all 4 latches)
9. Nose wheel Strut, Tire and Gear Door - CHECK (strut, door, pressure 30 PSI and general
condition of tire)
10. Engine Exhaust Outlet - CHECK (security and condition)
11. Left Side Fresh Air Vent - CHECK (blockage)
4.4
Fuel Filling
The airplane has 2 fuel filling caps, 1 on each tank in each wing. To fill the tanks, open both caps
and fill until the desired amount is in the tank, then continue filling the 2
nd
tank. Since both tanks are
connected, the fuel will want to level out in both tanks but it takes a while to do it. The fuel leveling
is also being slowed down by the sponge in the tank, that prevents fuel flushing around.
