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LOSI 8IGHT-E RTR • INSTRUCTION MANUAL
TROUBLESHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE
SOLUTION
Vehicle does not operate
Battery not charged or plugged in
Charge battery or plug in
ESC switch not ON
Turn on ESC switch
Transmitter not ON or low battery
Turn on or replace battery
Motor runs but rear wheels
do not rotate
Pinion not meshing with spur gear
Adjust pinion/spur mesh
Pinion spinning on motor shaft
Tighten pinion gear setscrew on motor shaft flat spot
Transmission gears stripped
Replace transmission gears
Drive pin broken
Check and replace drive pin
Steering does not work
Servo plug not in receiver properly
Make sure the steering servo plug is connected to the receiver steering channel, noting proper polarity
Servo gears or motor damaged
Replace or repair servo
Will not turn one direction
Servo gears damaged
Replace or repair servo
Motor does not run
Motor wire solder joint is damaged
Resolder the motor wire with the proper equipment
Motor wire broken
Repair or replace as needed
ESC damaged
Contact Horizon Hobby Product Support
ESC gets hot
Motor over-geared
Use smaller pinion or larger spur gear
Driveline bound up
Check wheels and transmission for binding
Poor run time and/or sluggish
acceleration
Battery pack not fully charged
Recharge battery
Charger not allowing full charge
Try another charger
Driveline bound up
Check wheels, transmission for binding
Poor range and/or glitching
Transmitter batteries low
Check and replace
Vehicle battery low
Recharge battery
Loose plugs or wires
Check all wire connections and plugs
LOSI 8IGHT-E RTR • INSTRUCTION MANUAL
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TUNING, ADJUSTING &
MAINTAINING YOUR VEHICLE
• Examine your vehicle on a regular basis.
• Use a brush to remove dirt and dust.
• Look for damage to the suspension arms and other molded parts.
• Re-glue the tires to the wheels, if necessary.
• Use suitable tools to tighten fasteners.
• Make sure the camber and steering linkages are not bent. Replace any bent linkages.
• Remove the shocks and inspect them for damage. Rebuild the shocks if oil is leaking.
• Inspect electronics and batteries for exposed wires. Repair exposed wires with shrink-
wrap or replace the wire.
• Make sure the ESC and receiver are secure on the chassis. Replace the double-sided tape,
if necessary.
• Power on the transmitter. If the green LED is dim or off, replace the AA batteries
in your transmitter.
• Check the spur gear for wear.
CHANGING THE TRAVEL ADJUST SETTINGS
WARNING:
Unplug 2 of the 3 motor wires to prevent the car from running away
when setting the EPA (travel).
1.
Hold the trigger in the full brake position and the steering wheel full right while powering
on the transmitter. The LED flashes rapidly, indicating the programming mode is active.
2. Throttle End Point:
Hold the throttle trigger to full throttle while turning the TH TRIM
knob clockwise until it stops. Turn the TH TRIM knob to adjust the full throttle end point.
3. Brake End Point:
Hold the trigger in the full brake position. Turn the TH TRIM knob
clockwise until it stops. Return the trigger to the center position.
4. Left Steering End Point:
Hold the steering wheel in the full left position. Turn
the ST TRIM knob to adjust the left end point.
5. Right Steering End Point:
Hold the steering wheel in the full right position. Turn the ST
TRIM knob to adjust the right end point. Return the steering wheel to the center position.
6.
Power off the transmitter to save the travel adjust settings.
The minimum Travel is 75%, and the Maximum travel is 150%.
SERVICE/REPAIR
RADIO/SPEED CONTROL & MOTOR
If any problems other than those covered in the troubleshooting section arise, please
call the appropriate electronics service department. They will be able to give the problem
additional specific attention and provide instructions for the solution.
MAINTENANCE
If any questions other than those covered in the troubleshooting or maintenance sections
arise, please call the appropriate Horizon product support department.
CLEANING
Performance can be hindered if dirt gets in any of the moving suspension parts. Use
compressed air, a soft paintbrush, or a toothbrush to remove dust or dirt. Avoid using
solvents or chemicals as they can actually wash dirt into the bearings or moving parts,
as well as cause damage to the electronics.
