Clean Air System
Air Suction Valve Removal
Fuel Tank (see Fuel Tank Removal in the Fuel System
Air Cleaner Housing (see Air Cleaner Housing Removal
in the Fuel System (DFI) chapter)
Separate the hoses [A] from the air suction valve cover.
Air Suction Valve Cover Bolts [B]
Air Suction Valve Cover [C]
Air Suction Valve
Air Suction Valve Installation
Install the air suction valve so that opening [A] of the reeds
faces the rear and downward.
Install the clamps [A] as shown.
Apply a non-permanent locking agent to the threads of
the air suction valve cover bolts, and tighten them with
the specified torque.
Torque - Air Suction Valve Cover Bolts: 12 N·m (1.2 kgf·m,
Air Suction Valve Inspection
Remove the air suction valve (see Air Suction Valve Re-
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 reed, 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 reed contact
areas, 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 with a high-flash point solvent.
Do not scrape off the deposits with a scraper as this
could damage the rubber, requiring replacement of
the suction valve assembly.
ENGINE TOP END 5-11