Eton ATV RXL 50 Service Manual page 60

Take a new remote controller and press any button
one time for one second to adjust the frequency
of controller. Then waiting ten seconds later pull out
end of wire clip from receiver pin or frame ground.
Before testing the remote controller, make sure the engine
stop switch on the left handle bar is on position. Then
press both buttons of the controller may make the vehicle
running normally. If the vehicle engine does not run, please
repeat the steps above carefully.
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