Honda Motorcycle Service Manual page 107

EMISSION CONTROL SYSTEMS
Connect the vacuum pump to the air vent fitting o n the
EVAP CAV control valve that goes t o open air.
NOTE
If the EVAP CAV control valve has t w o hose fittings that
no to open air, connect the blocked tube onto the other
/
fitting to prevent air leaks.
Apply vacuum to the EVAP CAV control valve. The vacuum
should hold steady. Replace the EVAP CAV control valve if
vacuum leaks.
Connect the vacuum pump to the hose that goes t o the
vacuum tube fitting.
VACUUM P U M P ST-AH-260-MC7
(U.S.A. only)
Connect the pressure pump to the air vent fitting on the EVAP
CAV control valve that goes to open air.
a
PRESSURE PUMP ST-AH-255-MC7
( U . S . A . only)
NOTE
If the EVAP CAV control valve has t w o hose fittings that
go to open air, connect the blocked tube onto the other
fitting to prevent air leaks.
While applying the vacuum to the EVAP CAV control valve
hose that goes to the vacuum tube fitting, pump air through
the air vent fitting. Air should flow through the EVAP CAV
control valve and out the hose that goes t o the carburetor.
CAUTION
Damage t o the EVAP CAV control valve m a y result
from use o f a high pressure air source. Use a hand-
operated air pump only.
Plug the hose that goes t o the carburetor
NOTE
If the EVAP CAV control valve has t w o hose fittings
that go to ooen air, connect the blocked tube onto the
I
other-fittingto prevent air leaks.
While applying vacuum to the EVAP CAV control valve hose
that goes to the vacuum tube fitting, apply air pressure t o the
air vent fitting.
It should hold steady.
Replace the EVAP CAV control valve if pressure is not
retained.
Remove the pumps, install the EVAP purge control valve on
its mount, route and reconnect the hoses according t o the
vacuum hose routing diagram label.
JACUUM
'UMP
TO VACUUM
PORT
TO CARBURETOR
AIR VENT PORT
PUMP
PUMP
Date of Issue : March,
1995
0
HONDA MOTOR CO.,LTD