KYMCO People Service Manual page 241

20
. EXHAUST EMISSION CONTROL
SYSTEM
TROUBLESHOOTING
High CO at idle speed
1. Damaged or clogged reed valve
2. Damaged or clogged air injection cut-off valve
3. Clogged air cleaner
Backfiring at sudden deceleration
1. Damaged reed valve (malfunction)
2. Faulty air injection cut-off valve (unable to close)
3. Carburetor incorrectly adjusted
4. Faulty air cut-off valve
5. Leaking vacuum tube
Exhaust muffler noise
1. Faulty air injection cut-off valve
2. Broken vacuum tube
3. Faulty reed valve
SERVICE INFORMATION
GENERAL INSTRUCTIONS
x During operation, be careful to avoid scalding caused by the exhaust muffler.
x Note the locations of tubes for proper installation.
x Replace any damaged tube with a new one.
x Make sure to tighten the connector of each tube securely
TOOLS
x Vacuum pump
SPECIFICATIONS
Air injection cut-off valve actuating pressure
250mm/Hg 30 liter/min.
Reed valve stopper clearance 4.6mm
20-2
PEOPLE/PEOPLE S 250