5-14 ENGINE TOP END
Clean A ir System
Air Suction Valve Removal
•
Remove:
Air Switching Valve (see Air Switching Valve Removal)
Air Suction Valve Cover Bolts [A]
Air Suction Valve Covers [B]
•
Remove the air suction valves [A].
Air Suction Valve Installation
•
Install the air suction valve so that opening [A] of the reed
faces the rear and downward.
•
Apply a non-permanent locking agent to the threads of
the air suction valve cover bolts, and tighten them with
the specified torque.
Torq ue - Air Suctio n Val ve Cover Bolts : 10 N·m (1.0 kgf·m,
89 in·lb)
Air Suction Valve Inspection
•
Remove the air suction valve (see Air Suction Valve Re-
moval).
•
Visually inspect the reeds for cracks, folds, warps, heat
damage or other damage.
If there is any doubt as to the condition of the reeds [A],
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 clean with a high-flash point solvent.
CAUTION
Do not scrape off the deposits with a scraper as this
could damage the rubber, requiring replacement of
the suction valve assembly.
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