Pair Control Valve Removal/Installation; Pair Check Valve Inspection - Honda 2003 NPS50 Ruckus Service Manual

Start the engine and open the throttle slightly to be
certain that air is sucked in through the secondary
air intake ports of the air cleaner housing.
If the air is not drawn in, check the air supply hose
for clogs.
With the engine running, gradually apply vacuum to
the PAIR control valve.
Check that the air intake port stops drawing air, and
that the vacuum does not bleed.
SPECIFIED VACUUM: 60 kPa (450 mmHg)
If air is drawn in, or if the specified vacuum is not
maintained, install a new PAIR control valve.
Remove the plug from the vacuum hose, then dis­
connect the vacuum pump and connect the vacuum
hose to the PAIR control valve.
Install the plug maintenance lid (page 4-8).
PAIR CONTROL VALVE REMOVAL!
INSTALLATION ('03 - '05 model only)
Remove the air cleaner housing (page 6-5).
Disconnect the vacuum hose, air supply hose and
PAIR control valve.
Route the hoses Install the removed parts in the reverse order of
removal.
property.

PAIR CHECK VALVE INSPECTION

Remove the plug maintenance lid (page 4-6).
Remove the bolts and PAIR checlc valve cover.
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FUEL SYSTEM
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