If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterFor Primary Fuel Injectors
Remove the air cleaner housing (see Air Cleaner Housing
Removal).
Disconnect the primary fuel injector connector [A].
Connect a digital meter to the terminals in each primary
fuel injector [A].
Measure the primary fuel injector resistance.
Primary Fuel Injector Resistance ...
Overview
Kawasaki Intelligent anti-lock Brake System (KIBS) offers enhanced braking
stability (ABS performance
equivalent to the current model) to supersportmodels, which pitch more than most
motorcycles
and also offers high-precision front and rear brake pressure control
(high-precision ABS) for spo ...
Starter Clutch Assembly
Install the one-way clutch [A] to the driven gear.
Face the circlip side of the one-way clutch to inside.
Install the new snap ring [B] to the one-way clutch.
Install the drive gear [C] while turn it counterclockwise [D].
Apply molybdenum disulfide oil solution to the needle
bearing ...