When the engine is running, the air intake valve is lifting up.
If the valve does not operate properly, check the air intake solenoid valve hoses for leak.
If there are no leaks, check the air intake solenoid valve.

Air Intake Solenoid Valve Unit TestWhat is a Limited Warranty?
The most important thing to know about your warranty is that it protects you
from manufacturing defects in material or workmanship during the warranty
period.
You can find the warranty period in the Kawasaki Limited Warranty Certificate
your Kawasaki dealer provided to you at the time of sale ...
Information for Coolant
To protect the cooling system (consisting
of the aluminum engine and
radiator) from rust and corrosion, the
use of corrosion and rust inhibitor
chemicals in the coolant is essential. If
coolant containing corrosion and rust
inhibitor chemicals are not used, over
a period of time, the cooling ...
Intake Air Pressure Sensor #1 Input Voltage Inspection
NOTE
Be sure the battery is fully charged.
Turn the ignition switch to OFF.
Remove the air cleaner housing (see Air Cleaner Housing
Removal in the Fuel System (DFI) chapter).
Disconnect the intake air pressure sensor #1 connector
and connect the measuring adapter [A] between these
con ...