Evaporative Emmission Carburetor Air Vent Control Valve (Evap Cav Control Valve) - Honda Motorcycle Service Manual

EMISSION CONTROL SYSTEMS
Connect a pressure pump to the hose fitting that goes to the
EVAP canister.
NOTE
.
If the EVAP purge control valve has t w o hose fittings
that go to the charcoal EVAP canister, connect the
blocked tube onto the other fitting to prevent air leaks.
While applying the specified vacuum t o the EVAP purge
control valve hose that goes to the vacuum port, pump air
through the EVAP canister hose. Air should flow through the
EVAP purge control valve and out the hose that goes to the
carburetor. Replace the EVAP purge control valve if air does
not flow out.
(EVAP PURGE CONTROL
VALVE INPUT PORT)
PRESSURE PUMP ST-AH-255-MC7
(U.S.A. only)
CAUTION
Damage t o the EVAP purge control
operated air pump only.
from use of a high pressure air source. Use a hand-
I - -
-
Remove the pump, install the EVAP purge control valve on its
mount, route and reconnect the hoses according to the
vacuum hose routing diagram label.
Connect a vacuum pump to the hose that goes to the vacuum
tube fitting.
EVAPORATIVE EMMISSION CARBURETOR AIR
VENT CONTROL VALVE (EVAP CAV CONTROL
VALVE)
NOTE
-
The EVAP CAV control valve should be inspected if
engine restart is difficult.
Disconnect the EVAP CAV control valve hoses from their
connections and remove the EVAP CAV control valve from its
mount. Refer to the vacuum hose routing diagram label for
hose connections.
VACUUM PUMP ST-AH-260-MC7
-
TO
Apply the specified vacuum to the EVAP CAV control valve.
SPECIFIED VACUUM: 250mm (9.8 in) HG
The specified vacuum should be maintained. Replace the
EVAP CAV control valve if vacuum is not maintained.
Date of issue : March, 1995
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HONDA MOTOR CO. ,LTD.