Sym Citycom 300i - Page 269

18. Emission Control System
18-7
Countermeasure for Abnormal Emission Pollutants
Note: If CO value can not be adjusted to the default value by adjusting ECU, follow the procedures to
check or replace components.
Conduct periodical inspection
(check one time for 3000 km/3
months)
Test exhaust emissions at idle
speed.
Adjust ECU.
Clean fuel injector
Replace fuel injector
Keep the CO value in
0.5~2
.5% (note 3) by adjusting
fuel injection quantity.
Clean the carbon deposit in
combustion chamber.
Check piston rings for
leakage.
Clean or replace the muffler.
Inspect other related
mechanism on the engine
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