Yamaha VIKING Owner's Manual page 80

TIP
● When the knob is set to "DIFF LOCK" or "4WD", the differential gear lock indicator and indi-
cator light will flash until the differential gear is completely locked or unlocked.
When the indicator and indicator light are flashing, turning the steering wheel back and forth
●
will help the differential gear lock to engage or disengage.
Riding before the differential gear is properly engaged or disengaged (e.g., when the indica-
●
tor and indicator light are flashing) will cause the vehicle speed to be limited until the differ-
ential gear is completely engaged or disengaged.
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