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Post-Flight Inspections and Maintenance
Ball Links
Make sure the plastic ball link holds the control ball, but is not tight (binding) on the ball. When a link is too loose on the ball, it can
separate from the ball during fl ight and cause a crash. Replace worn ball links before they fail.
Cleaning
Make sure the battery is not connected before cleaning. Remove dust and debris with a soft brush or a dry lint-free cloth.
Bearings
Replace bearings when they become notchy (sticky in places when turning) or draggy.
Wiring
Make sure the wiring does not block moving parts. Replace damaged wiring and loose connectors.
Fasteners
Make sure there are no loose screws, other fasteners or connectors. Do not over tighten metal screws in plastic parts. Tighten screw
so parts are mated together, then turn screw only 1/8th of a turn more.
Rotors
Make sure there is no damage to rotor blades and other parts which move at high speed. Damage to these parts includes cracks,
burrs, chips or scratches. Replace damaged parts before fl ying.
Gyro
Make sure the AR7200BX is securely attached to the frame. Replace the double-sided tape when necessary. The helicopter will crash
if the AR7200BX separates from the helicopter frame.
Blade Helicopter Belt Tension
Belt tension that is too tight results in loss of power and causes the belt
to wear more quickly. Tension that is too loose can cause belt damage and
loss of tail rotor control in fl ight.
To check for proper belt tension:
1. View the tail rotor drive belt through the opening at the back of the main
frame.
2. Use a hex wrench or standard screwdriver to compress the belt through
the opening.
3. Apply light pressure on the belt, compressing the belt toward the left side
of the tail boom.
4. The belt tension is correct if the compressed side of the belt reaches
approximately halfway to the opposite side of the belt.
a. If the compressed side of the belt reaches farther than
halfway to the other side of the belt, the tension is too loose.
b. If the compressed side of the belt does not reach halfway
to the other side of the belt, the tension is too tight.
To adjust belt tension:
1. Loosen the two horizontal stabilizer screws.
2. Loosen the four screws at the back of the main frame.
3. Slide the boom forward or aft to adjust the belt tension.
4. When the belt tension is properly adjusted, tighten the four
screws at the back of the frame.
5. Tighten the horizontal stabilizer screws.
