Honda Activa SCV110, Service Manual Digest

Page: 73 / 230

5-12
FUEL SYSTEM
SECONDARY AIR SUPPLY SYSTEM
SYSTEM INSPECTION
Start the engine, and warm it up to normal operating
temperature, then stop the engine.
Disconnect the air suction hose from the secondary air
cleaner housing.
Check the air suction hose port is clean and free carbon
deposits.
Check the PAIR check valve if the port is carbon fouled
Disconnect the vaccum hose from the intake pipe,
and connect it to the vaccum pump.
Install the plug to the intake pipe.
Start the engine, and open the throttle slightly to be
certain that air is sucked in through the air suction hose .
If the air is not drawn in, check the air suction hose for
clogging.
With the engine running, gradually apply vaccum to the
PAIR control valve vaccum hose.
Check that the air suction hose stop drawing air, and that
the vaccum does not bleed.
SPECIFIED VACCUM: 66.7 kPa (500 mmHg)
If the air is drawn in or if the specified vaccum is not
maintained, install a new PAIR control valve.
Remove the plug from the intake pipe.
Disconnect the vaccum hose from the vaccum pump,
and connect it to the intake pipe.
PAIR CHECK VALVE REMOVAL/
INSTALLATION
Remove the screws (2 nos.) of PAIR check valve cover
and remove the cover from the PAIR control valve body.
PAIR CONTROL
VALVE BODY
PAIR CONTROL
VALVE BODY
COVER
SCREWS
SCREWS
COVER