Special Tools Required
Remove the cowl cover and the under-cowl panel.
Disconnect the A/F sensor connector (A).

Remove the A/F sensor (A).

Install the parts in the reverse order of removal.
Inspection
Raise and support the vehicle.
Remove the front wheels.
Check the thickness (A) of the inner pad (B) and the outer pad (C). Do not
include the thickness of the back ...
Transmission End Cover Air Check Valve Inspection and Replacement (A/T)
NOTE:
There are two types of the transmission end cover; the type A and the
type B; and both types are available.
The differences between the types A and B of the end covers are:
...
Fuel Tank Draining
Remove the fuel tank unit.
Using a hand pump, a hose, and a container suitable for fuel, draw the
fuel from the fuel tank.
Reinstall the fuel tank unit.
...