2-34 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Air Suction System Damage Inspection
Disconnect the air switching valve hose [A] from the lower
air cleaner housing [B] (see Air Cleaner Housing Removal
in the Fuel System (DFI) chapter).
Install the following parts temporarily.
Fuel Pump Lead Connector [A]
Extension Tube [B]
Air Cleaner Housing (see Air Cleaner Housing Installa-
tion in the Fuel System (DFI) chapter)
Special Tool - Extension Tube: 57001-1578
Start the engine and run it at idle speed.
Plug the air switching valve hose end [A] 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
2 ∼ 3 mm (0.08 ∼ 0.12 in.)