If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterIntake Air Pressure Sensor #2 Output Voltage Inspection
Measure the output voltage at the intake air pressure sensor
#2 in the same way as input voltage inspection, note
the following.
Disconnect the intake air pressure sensor #2 connector
and connect the measuring adapter [A] between these
connectors.
[B] Main Harness
[C] Intake Air Pressu ...
Stop Watch
The stop watch can be used in closed
course competition.
The stop watch is operated as follows:
Push the upper button to display the
stop watch.
To start the stop watch, push the
“START/STOP� switch on the right
handlebar switch to the left.
A. “START/STOP� Switch
...
Air Intake Solenoid Valve Unit Test
Remove the air intake solenoid valve (see Air Intake Solenoid
Valve Removal in the Fuel System (DFI) chapter).
Set the hand tester [A] to the × 1 Ω range and connect it
to the air intake solenoid valve terminals as shown in the
figure.
Special Tool - Hand Tester: 57001-1394
...