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9
LOSI 8IGHT • INSTRUCTION MANUAL
Possible Cause
Solution
ENGINE DOES NOT START
Out of fuel
Refi ll the tank and follow starting instructions.
Engine fl ooded
Remove the spark plug. Rotate engine using starter box. Replace and test
Air fi lter is clogged
Check and replace if necessary
Fuel mixture is old or bad
Mix fresh fuel per instructions
Spark plug is not working
Check the spark plug and ignition coil and replace if necessary
Throttle servo failed/Setup is wrong
Check servo operation. Set it to neutral and reset the linkage according
to your radio and model manufacturer's specifi cations
Carburetor is incorrectly adjusted
Return the carburetor to the factory settings and retune if necessary
Piston and cylinder is worn
Check the piston and cylinder for wear or damage and replace if necessary
Vehicle's power switch is not in the on
position
Locate the power switch on the side of the receiver box and switch to ON
position
ENGINE STARTS THEN STALLS
Out of fuel
Refi ll the tank and follow starting instructions
Air fi lter is clogged
Check and replace if necessary
Engine may be overheated
Let the engine cool. Richen the high speed needle
Engine idle is too low
Follow the instructions to increase idle speed
Carburetor is incorrectly adjusted
Return the carburetor to the factory settings and retune if necessary
Clutch is slipping or locked-up
Check the clutch for worn/broken lining or spring. Also check clutch
bearings and ensure free rotation
Fuel mixture is old or bad
Mix fresh fuel per instructions
Throttle servo is improperly set up
Set the servo to neutral and reset the linkage according to radio and model
manufacturer's specifi cations
Drivetrain is not functioning properly
Check the drivetrain for smooth operation/damage
ENGINE IS RUNNING, BUT VEHICLE DOES NOT MOVE
Brakes are stuck
Look for damage or foreign matter locking the brakes
Drivetrain is damaged
Check for damaged driveshaft or diff. Replace as needed
Receiver battery capacity is low
Charge the receiver battery
Radio is not responding despite charged
battery
Make sure binding is properly set up
ERRATIC CONTROL
Transmitter and/or receiver batteries are weak Install new batteries in the transmitter. Recharge the receiver battery
Connectors are inserted improperly
Check the connectors and reinstall if necessary
Brake is not working
Check the servo, brakes, and linkage for damage. Repair/replace/reset
the servo linkage to factory settings
The steering gain is set too high
Turn down the steering gain
The throttle channel was reversed after
calibration
Rebind and calibrate
The steering channel was reversed after
calibration
Rebind and calibrate
Troubleshooting Guide
