Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playGearshift lever
This motorcycle has a 6-speed
transmission which operates as
shown. To shift properly, squeeze
the clutch lever and close the
throttle at the same time you
operate the gearshift lever. Lift the
gearshift lever to upshift and
depress the lever to downshift.
Neutral is located between lo ...
Front fork removal and installation
Note
the right and left front forks are installed
symmetrically and therefore the removal
procedure for one side is the same as that for
the other side.
Removal
Remove the front wheel. Refer to “front wheel assembly removal and
installation” in section 2d .
...
DTC “c31” (p0705): gp switch circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
No gear position switch voltage
Gp switch voltage is not within the following range.
Gp switch voltage > 0.6 V
Gp switch circuit open or short.
Gp switch malfunction.
...