If the fuel level indicator light (1) does not function properly, check the fuel level gauge and its lead wire/ coupler.
If the fuel level gauge and its lead wire/coupler are functioning properly, replace the combination meter with a new one.

Engine coolant temperature indicator light inspection
Fuel level gauge inspectionFront wheel assembly removal and installation
Removal
Remove the brake calipers, left and right.
Caution
do not operate the brake lever with the
caliper removed.
Loosen two axle pinch bolts (1) on the right front fork
leg.
Remove the front axle bolt (2).
Raise the front wheel off the ground a ...
Front fork parts inspection
Refer to “front fork disassembly and assembly” .
Inner and outer tubes
Inspect the inner tube and outer tube for scratches
Slide bushing / guide bushing
Inspect the slide bushing and guide bushing for wear or
damage. If they are worn or damaged, replace them with
new ones. If they are not ...
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.
...