Secondary Air Supply System: ('02 - '05 Model) - Honda Metropolitan CHF50 Service Manual

MAINTENANCE
Remove the radiator cover (page 6-5).
Check the radiator air passage for clogs or damage.
Straighten bent fins with a small, flat blade screw-
driver and remove insects, mud or other obstruc-
tions with compressed air or low pressure water.
Replace the radiator if the air flow is restricted over
more than 20% of the radiating surface.
Install the radiator cover (page 6-8).
Install the luggage box (page 2-6).
SECONDARY AIR SUPPLY SYSTEM:
('02 - '05 model)
Remove the luggage box (page 2-6).
Check the air supply hoses between the air cleaner
case and PAIR control valve and PAIR check valves
for damage or loose connections.
If the hoses show any signs of heat damage, inspect
the PAIR check valves (page 5-23).
Check the vacuum hose between the intake mani-
fold vacuum joint and PAIR control valve for deteri-
oration, damage or loose connections.
Also check that hose is not kinked or pinched.
Install the luggage box (page 2-6).
VACUUM HOSE
INTAKE MANIFOLD
AIR SUPPLY HOSE
PAIR CONTROL VALVE
PAIR CHECK VALVE
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