Publicité
Les langues disponibles
Les langues disponibles
Specific fuel is required for the break-in process. Please refer to the chart above for the proper
fuel. Break-in fuel contains additional oil compared to fuel you will use for everyday flying. The
additional oil is critical for cooling and removing break-in debris from the engine.
Run the engine through four tanks of fuel (32 oz/1000mL) for 3—4 minutes at a time, allowing
the engine to cool between runs. Vary the throttle between idle and ¾ throttle for the first 30
minutes of engine run time. Do not exceed ¾ throttle during the break-in. The engine break-in
process is complete after the first four tanks of fuel and you can begin tuning the engine for
normal flying.
Checking for a Flooded Cylinder
Because of the nature of radial engines, it is not uncommon for the lower cylinders to
accumulate excess fuel or oil either in storage or during the priming process. Before
beginning the starting process be sure to:
1. Rotate the propeller by hand. During the rotation, if you encounter a point where there is
serious resistance to the rotation, STOP. This is an indication of a flooded cylinder and what
you are feeling is hydraulic lock. Any further attempts to force the rotation of the engine can
result in damage to the cylinder or conrod.
2. If you encountered hydraulic lock, remove the spark plug from the lower two cylinders
and the engine should rotate freely. Continue to rotate until all the excess fluid has been
removed from the cylinder.
3. Reinstall the spark plug and continue with the starting process.
Starting the Engine
Use a high quality gear oil to lubricate the outer parts of the valve train at the beginning
of each flying day.
1. Fill the fuel tank with fuel.
2. Power off the electronic ignition.
3. Make sure the fuel lines are properly connected to the carburetor.
4. Open the throttle to full open. The carburetor barrel should be fully opened.
5. Place the choke lever over the carburetor opening.
6. Rotate the propeller 3 or 4 times until you see fuel moving through the fuel lines.
7. Remove the choke lever from the carburetor opening and move the throttle stick
to ¼ throttle.
8. Power on the electronic ignition. Make sure the battery is fully charged.
Engine Tuning
The break-in settings for the carburetor needles are:
High-speed needle:
Low-speed needle:
Use a tachometer (HAN111 or HAN156) to tune the engine based on RPM.
WARNING: Always adjust the carburetor from behind the propeller. Keep all loose
items away from the propeller at all times. Never reach over or around the propeller.
1. Start the engine.
2. Move the throttle stick up until the engine is running at approximately 2,000 rpm.
3. If you are using separate exhaust pipes, use a temperature gun to make sure hot exhaust
is exiting all engine cylinders. If you are using a collector ring, use a temperature gun to make
sure all the cylinder temperatures are similar and firing smoothly.
1 3/4 turns open
1 3/4 turns open
EN
7
Publicité
