KYMCO MXU 270i EURO Manual page 28

Improper adjustment of the throttle limiter screw can cause
damage to the throttle cable. A damaged throttle cable will
affect throttle operation and can cause an accident where
you can be injured or killed. Use care when adjusting the
throttle limiter so the adjuster screw is not turned out more
than required distance. Refer to the throttle limiter
adjustment plus the throttle lever free play adjustment. If
you lack the ability to adjust these items properly, contact
your KYMCO dealer for assistance.
 NOTE: Your ATV is equipped with an ignition limiter
that retards timing when maximum engine RPM is
approached. If this RPM limiter is activated, it can be
misinterpreted as a high-speed ignition misfire.
CONTROL LOCATIONS & FUNCTIONS
23