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Vacuum Switch Valve Test; Clean Air System Hose Inspection - Kawasaki EN500 Vulcan 500 LTD Service Manual

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Clean Air System (US, CH, AT, KR, C2 ∼ CA, DE & C6 ∼ EUR, FR)

Vacuum Switch Valve Test

Using the vacuum gauge and a syringe, inspect the vac-
uum switch operation as follows.
Remove the vacuum switch valve.
Connect the vacuum gauge [A] and syringe [B] or fork oil
level gauge to the vacuum hoses as shown.
Air Flow [C]
Special Tools - Vacuum Gauge: 57001-1369
Fork Oil Level Gauge: 57001-1290
Gradually raise the vacuum (lower the pressure) applied
to the vacuum switch valve, and check the valve opera-
tion. When the vacuum is low, the vacuum switch valve
should permit air to flow. When the vacuum raises to
valve closing pressure, it should stop air flow.
Spring [A]
Diaphragm [B]
Valve [C]
Low Vacuum [D]
Secondary Air Flow [E]
If the vacuum switch valve does not operate as described,
replace it with a new one.
To check air flow through the vacuum switch valve, just
blow through the air cleaner hose.
Vacuum Switch Valve Closing Pressure (open → close)
Standard: 57 ∼ 65 kPa (0.58 ∼ 0.66 kgf/cm², 8.3 ∼ 9.4
High Vacuum [A]
Secondary air cannot flow [B]

Clean Air System Hose Inspection

Be certain that all the hoses are routed without being flat-
tened or kinked, and are connected correctly to the air
cleaner housing, vacuum switch valve, and air suction
valve covers.
If they are not, correct them. Replace them if they are


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   Also See for Kawasaki EN500 Vulcan 500 LTD

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Vulcan 500 ltd

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  • Ricardo Paluan Apr 27, 2016 01:22:
    Adquiri recentemen​te uma moto vulcan 500 ano 1995. Tenho o 37 anos e iniciante no mundo motociclis​ta. Entretanto​, em razão só tempo e idade da moto, não tenho o manual do proprietá​rio, sendo este indispens