Operation Inspection; Secondary Air Supply System - Honda 2003 NPS50 Ruckus Service Manual

FUEL SYSTEM

OPERATION INSPECTION

Remove the following:
- Carburetor (page 6-7)
- Float chamber (page 6-10)
Insert a vinyl hose into the starter jet (fuel enrich­
ment circuit) and blow into the hose.
Air should flow into the circuit.
Connect the 12 V battery to the SE valve 2P connec­
tor terminals and wait 5 minutes.
•
Insert a vinyl hose into the starter jet (starting
•
enrichment circuit) and blow into the hose.
Air should not flow into the circuit.
If operation is abnormal, replace the SE valve.
If input voltage and SE valve are normal, replace
the ECM.
Install the following:
- Float chamber (page 6-12)
- Carburetor (page 6-15)

SECONDARY AIR SUPPLY SYSTEM

SYSTEM INSPECTION
Start the engine and warm it up to normal operating
temperature.
Remove the air cleaner housing cover (page 6-5).
Remove the secondary air cleaner element.
Check that the secondary air intake ports are clean
and free of carbon deposits.
If the ports are carbon fouled, check the PAIR check
valve (page 6-23).
Wash away any accumulated dust o r dirt, by gently
squeezing it in non flammable or high flash�point
solvent.
Install the secondary air cleaner element and air
cleaner housing cover (page 6-5).
'03 - '05 model only:
Remove the plug maintenance lid (page 4-6).
Pull out the air supply hose from the inner side of
the under cover.
Disconnect the PAIR control valve vacuum hose
from the PAIR control valve and plug it to keep air
from entering.
Connect the vacuum pump to the PAIR control valve
vacuum hose joint.
6-22