Secondary Air Supply System - Honda Transalp XL700V Manual

MAINTENANCE
Remove the under cowl (page 2-13).
Check for any coolant leakage from the water pump,
radiator hoses and hose joints.
Check the radiator hoses for cracks or deterioration
and replace them if necessary.
Check that all hose clamps are tight.
Install the under cowl (page 2-13).

SECONDARY AIR SUPPLY SYSTEM

• This model is equipped with a built-in secondary
air supply system. The pulse secondary air sup-
ply system is located on the cylinder head cover.
• The secondary air supply system introduces fil-
tered air into exhaust gases in the exhaust port.
The secondary air is drawn into the exhaust port
whenever there is negative pressure pulse in the
exhaust system. This charged secondary air pro-
motes burning of the unburned exhaust gases
and changes a considerable amount of hydrocar-
bons and carbon monoxide into relatively harm-
less carbon dioxide and water.
Lift and support the fuel tank (page 3-5).
Check the PAIR air supply hoses between the PAIR
If the hoses show
control solenoid valve and cylinder head cover for
any signs of heat
deterioration, damage or loose connections. Make
damage, inspect
sure that the hoses are not cracked.
the PAIR check
valve in the cylinder
Check the air suction hose between the air cleaner
head cover for
housing and PAIR control solenoid valve for deterio-
damage.
ration, damage or loose connections.
Make sure that the hoses are not kinked, pinched or
cracked.
3-16
RADIATOR HOSES
PAIR CHECK VALVE
CYLINDER HEAD COVER
EXHAUST PORT
PAIR CONTROL SOLENOID VALVE
AIR SUCTION HOSE AIR SUPPLY HOSES