32
33
Troubleshooting Guide
Problem
Possible Cause
Solution
RTF/BNF
Aircraft will not
“throttle up” but all
other controls seem
to function.
BNF Only
• User did not lower throttle
trim and throttle stick prior
to initializing the aircraft.
• Throttle channel is
reversed. Note: Futaba
transmitters (equipped
with Spektrum
modules) may require
you to reverse the throttle
channel.
• Lower throttle stick and throttle
trim to their lowest settings.
• Reverse throttle channel
on specific transmitter if
applicable.
RTF/BNF
Propeller or motor
shaft broken.
• Crash damage
• Replace with PKZ3601 Prop with
Spinner: J-3 Cub, or PKZ3528
Prop Shaft: J-3 Cub.
RTF/BNF
Aircraft appears to
show significant
decrease in flight
time.
Aircraft appears to
have less power.
• Flight battery is not fully
charged.
• AA batteries in charger have
inadequate power.
• PKZ1035 battery has been
over-discharged multiple
times, causing damage to
battery life.
• Bushings on gearbox may
be causing friction, reducing
power.
• Recharge flight battery
completely.
• Replace AA batteries in the
charger and recharge flight
battery completely.
• Replace PKZ1035 battery and
read “Battery Warnings and
Guidelines” section of manual.
Pages 4–6.
• Lubricate the bushings of the
gearbox.
RTF/BNF
Charger light stays on
after Li-Po battery is
disconnected or
remains on for longer
than 40 minutes when
charging.
• AA batteries in the charger
have inadequate power.
• Replace AA batteries in the
charger.
Problem
Possible Cause
Solution
RTF/BNF
LED on Aircraft
remains flashing and
cannot be controlled
by transmitter.
BNF Only
• User did not wait at least
5 seconds after powering
the transmitter prior to
connecting the flight battery
to the Aircraft.
• Transmitter was too
close to Aircraft during the
initialization process.
• User bound the Aircraft to
a different transmitter.
• Unplug, then reconnect flight
battery.
• Move transmitter (powered on) a
few feet from the Aircraft prior to
reconnecting the flight battery.
• Rebind Aircraft to your
desired compatible
transmitter.
Aircraft appears to
roll, yaw, or pitch
toward a certain
direction.
• User did not re-trim the
Aircraft.
• Trim control surface using the
transmitter until airplane no
longer moves that direction.
BNF Only
Controls appear to
be reversed after
binding to a
different
transmitter.
• User did not initially set
up the transmitter prior to
binding to the Aircraft.
• Read “Control Test” section of
this manual. Pages 24–27.
RTF/BNF
Aircraft does not
function after
connecting flight
battery and aircraft
smells burnt.
• User may have accidentally
plugged the flight battery in
the wrong polarity.
• Replace receiver/ESC board
(PKZ3351) and ensure the RED
polarity marks are facing the
same direction when connecting
the flight battery to the receiver
board.
