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Engine
After each day of flying, fully drain the fuel tank. Then
start the engine and let it idle until the engine and the
fuel line are completely burned off. It is also suggested
that an after-run oil be used to prevent premature
engine corrosion.
Check All Nuts and Bolts
A helicopter is subject to high vibration during flight.
It is important to check that all screws, nuts and bolts
are properly secured after each day of flying. It is
also suggested that you perform a “quick” inspection
between each initial test flight for approximately the
first 6 to 10 flights.
Main Rotor Head
Periodically check the main rotor head dampeners to
maintain maximum rotor head performance.
When reassembling the main rotor head, apply a light
coating of oil to the dampeners to prolong life.
It is also suggested at this time that the rotor head thrust
bearings be lubricated using a high-speed grease. This
will prolong the visibility of the thrust bearings.
Washout Base
Lubricate the washout base using light oil every 10
–15 flights to ensure smooth operation and reduce
wear. Inspect the washout base every 50–75 flights. If
excessive wear is noted, replace as needed.
Tail Pitch Slider
Lubricate the tail pitch slider using light oil every 5–10
flights to ensure smooth operation and reduce wear.
Check Ball Link Wear
Check to ensure that all universal links fit freely but
securely to the control balls. If there is excessive play
noted, adjust and/or replace the universal link in
question.
Battery Maintenance
Check to ensure that your batteries are properly
mounted and charged. The most frequent cause of
crashes (aside from pilot error) is battery failure or
disconnection. Be certain that your batteries are fully
charged and limit your flight time to 3 or 4 flights
between charging. If more flight time is required,
purchase a reliable quick field charger.
Cleaning
At the end of each flight or flying session, wipe down
your helicopter with a clean towel or rag. This is also a
good time to inspect all parts for tightness or fatigue.
Remember, a clean, well-maintained helicopter will
provide you with many hours of trouble-free flight.
Ball Links
Check ball links every 15–20 flights for increased play
and looseness. Adjust the ball links using pliers to
tighten the ball race if needed.
generAl mAIntenAnce
Summary of Contents for Vibe 90SG
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