Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionRebound Damping Force Adjustment
To adjust the rebound damping force, turn the rebound
damping adjuster [A].
The standard adjuster setting is the 3 3/4 turns out from
the fully clockwise position.
WARNINGIf both adjusters are not adjusted
equally, handling
may be impaired and a hazardous condition may
res ...
Check 3-6: Neutral Indicator Light (LED) Inspection
Connect the leads in the same circuit as Check 3-2.
Connect the terminal [8] to the battery (–) terminal.
Check that the neutral indicator light (LED) [A] goes on.
If the indicator light does not go on, replace the meter unit.
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Wiring Diagram (Other than US, CA and CAL with KIBS Models)
ZX1000KC
ZX1000KD
...