19. EXHAUST EMISSION CONTROL
SYSTEM MOVIE 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
· During operation, be careful to avoid scalding caused by the exhaust muffler.
· Note the locations of tubes for proper installation.
· Replace any damaged tube with a new one.
· Make sure to tighten the connector of each tube securely
TOOLS
· Vacuum pump
SPECIFICATIONS
Air injection cut-off valve actuating pressure
~~250mm/Hg~~30 liter/min.
Reed valve stopper clearance4.6mm
19-2
19
Fast delivery and good communication ! The parts fit perfectly ! Thank you very much ! 
4.7 / 5