Kawasaki Z400 - Service manual > Clean Air System

Air Suction Valve Removal

• Remove: Air Cleaner Housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter) Air Switching Valve [A] Air Suction Valve Cover Bolts [B]
• Raise the air suction valve cover [C] and remove the air suction valve.

Air Suction Valve Installation

• Install the air suction valve [A].

Face the wider side [B] of the valve forward.

• Tighten: Toque - Air Suction Valve Cover Bolts : 9.8 N*m (1.0 kgf*m, 87 In-lb)
• Install the removed parts (see appropriate chapters).

Air Suction Valve Inspection

• Remove the air suction valve (see Air Section Valve Removal)
• Visually  inspect the reeds [A] for cracks, folds, warps, heat damage or other damage.

*If there is any  doubt as to the condition of  the reeds, replace the air suction valve as an assembly.

• Check the reed contact areas [B] of the valve holder for grooves, scratches, any signs of separation from the holder or heat damage.

*If there is any  doubt as to the condition of  the reeds, replace the air suction valve as an assembly.

*If any carbon or other foreign particles have accumulated between the reed and the reed contact area, wash the valve assembly clean with a high flash-point solvent.

Air Switching Valve Removal

• Remove : Right Middle Fairing (see Middle Fairing Removal in the Frame chapter)
• Disconnect the connector [A].
• Slide the clamps [B].
• Disconnect the hoses [C] from the air suction valve cover and air cleaner housing fitting, and remove  the air switching valve assembly.
• Remove: Hoses [A] Damper [B] Air switching Valve [C]

Notice :

Never drop the air switching valve especially on a hardsurface. Such a shock to the air switching valve can damaged it.

Air Switching Valve Installation

• Installation is the reverse of removal.
• Run the lead and hoses correctly (see Cable, Wire, and Hose Routing section in the Appendix chapter).
• Install the removed parts (see appropriate chapters).

Air Switching Valve Operation Test

• Refer to the Air Suction System Damage Inspection in the Periodic Maintenance chapter.

Air Switching Valve Unit Test

• Refer to the Air Switching Valve Unit Test in the Electrical System chapter.

Clean Air System Hose Inspection

• Be certain that all the hoses are routed without being flattened or kinked, and are connected connected to the air cleaner housing, air switching valve and air suction valve cover.

*If they are not, correct them. Replace them if they are damaged.

See also: