Periodic Maintenance Procedures
Stretch the open cable (white) by using the adjuster [A].
Turn the adjuster counterclockwise until it becomes hard
Locknut of White [B]
Do not overstretch. If the adjustment of the exhaust
butterfly valve cables are incorrect, the exhaust but-
terfly valve actuator does not operate correctly.
Torque - Exhaust Butterfly Valve Cable Adjuster Locknuts:
6.9 N·m (0.70 kgf·m, 61 in·lb)
Cover the dust covers [C].
Be sure that the dust covers [D] are in positions as shown.
Turn the ignition switch ON, and confirm the pulley turns
counterclockwise and then clockwise.
If the operation of the pulley is different, readjust the ex-
haust butterfly valve cables.
Confirm the pulley is original position.
If the pulley is not at original position, adjust the pulley
(see Exhaust Butterfly Valve Actuator Installation in the
Fuel System (DFI) chapter).
Check that the exhaust butterfly valve actuator operate
correctly (see Exhaust Butterfly Valve Cable Installation
in the Engine Top End chapter).
Air Suction System
Air Suction System Damage Inspection
Remove the left side cover (see Side Cover Removal in
the Frame chapter).
Pull the air switching valve hose [A] out of the air cleaner
Start the engine and run it at idle speed.
Plug the air switching valve hose end with your finger and
feel vacuum pulsing in the hose.
If there is no vacuum pulsation, check the hose line for
leak. If there is no leak, check the air switching valve
(see Air Switching Valve Unit Test in the Electrical Sys-
tem chapter) or air suction valve (see Air Suction Valve
Inspection in the Engine Top End chapter).
Clutch Operation Inspection
Pull the clutch lever just enough to take up the free play
Measure the gap between the lever and the lever holder.
If the gap is too wide, the clutch may not release fully. If
the gap is too narrow, the clutch may not engage fully. In
either case, adjust it.
Clutch Lever Free Play
3 mm (0.08
PERIODIC MAINTENANCE 2-31