1/5
th
M
EGA
T
RUCK
Troubleshooting Guide (continued)
The engine doesn’t idle well
The servos aren’t responding, or the transmitter is not connecting
o
If the idle is too low, turn the carburetor idle screw clockwise to raise idle. If the idle is too high turn it
counterclockwise until the desired idle is reached. Idling as low as possible is recommended without the
engine stalling. The clutch may start to engage, preventing the reverse function from working properly.
o
Check that transmitter switch is on
o
Check that truck’s battery switch is on
o
Check the wire connections. Make sure they're intact
,
connected properly
, and the polarity is not reversed (
s
ee wiring
diagram on page
5
). Make sure to line tabs up: black to black and red to red.
o
Check that your batteries are charged
o
Check to make sure your transmitter and receiver are bound.
o
Very
Important
: Setup all settings in the radio, especially the end point adjustments. Maxing out your end point
adjustments can place too much stress on the servos and burn them out prematurely. The radio manual has
explanation
s
on how to setup and adjust all functions.
o
If you suspect a servo has gone bad you can test it by plugging it into a known working receiver port.
For instance: If the steering servo is not responding, but the throttle servo is working, plug the steering servo
into the throttle servo's receiver port and test it. If the steering servo works in the new port the problem is not
the servo.
o
The most common reason for servo failure is overload. Steering the servo while the truck is stationary too often can
overload the servos and burn them out.
o
If you suspect one of the steering servos has failed, stop and turn off the truck. Prolonged use while one steering
servo is not working may overload the other steering servo.
o
If you notice decreased response time on the servos you may need to charge
or
swap out the battery.
The servos aren’t moving in correct direction
o
Check servo reverse functions on the transmitter.
The brakes are not working, but the brake servos are moving
Reverse is not working
o
Adjust cable wire to ensure that the brake is pulling properly on the calipers.
o
Check to make sure brake pads are not worn out.
o
Check that drive line axle pins and driveshaft pins are not broken.
o
Make sure you stop the truck from rolling before switching to reverse.
o
Check that your idle is low. If idle is too high, The clutch may start to engage, preventing the reverse
function from
working properly.
o
Adjust the reverse servo cable to ensure that it is pulling enough to engage reverse properly.
Choke lever
is not working
o
If the choke lever is not staying in position you may need to bend it at about a 30° angle. This will enable it to stay in
position better.
13
