Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionStick Coil Removal
Remove the air cleaner housing (see Air Cleaner Housing
Removal in the Fuel System (DFI) chapter).
Disconnect the stick coil connectors [A].
Pull out the stick coils [B] upward.
First, turn the stick coil by 90 degrees, and then pull it out
by twisting the coil head to the left and righ ...
Liquid Gasket, Non-permanent Locking Agent
For applications that require Liquid Gasket or a
Non-permanent Locking Agent, clean the surfaces so
that no oil residue remains before applying liquid gasket or
non-permanent locking agent. Do not apply them excessively.
Excessive application can clog oil passages and
cause serious damage.
...
Front Wheel Installation
NOTE
The direction of the wheel rotation [A] is shown by an
arrow [B] on the wheel spoke.
Check the wheel rotation mark on the front wheel and
install it.
Apply high-temperature grease to the grease seal lips.
Fit the collars [A] on the both sides of the hub.
The collars are i ...