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5.
Idle speed
Caution
Do not adjust idle speed without consulting your genuine dealer.
The XY650-A idle speed is controlled by the ECU. The idle
speed has been properly adjusted upon delivery. Do not adjust
the idle speed. In the event the idle speed is unsteady, zero or
too high, bring the vehicle to a qualified genuine dealer to
determine the possible causes via troubleshooting the EMS
system. Your dealer will check whether the ignition advance
angle is between 0°-15°. If the ignition advance angle is more
than 15°, it indicates the throttle valve’s intake flow at idle speed
is insufficient, and at this point, the idle speed is unstable or null;
if the ignition advance angle is less than 0°, it indicates the
intake flow at idle speed is too high, and at this point, the idle
speed is often as high as 1800 r/min or more. Only under the
above two cases will the technician adjust the idle speed
adjusting screw to let the intake flow reach the specified flow.
Adjusting screw
screw
Maintaining & diagnostic
instrument