YCF 50 A Owner's Manual page 150

English
EMISSION CONTROL INFORMATION
GENERAL
YCF has designed and uses two systems to cut carbon monoxide and hydrocarbon emission so as to conform
at the time of initial retail purchase with all local regulations. Both the exhaust and crankcase emission
control systems are outlined below:
Exhaust Emission Control System
The fuel and ignition systems of your Mini-Motorbike both designed for lean burning provide more efficient
fuel use and low exhaust emission, thereby reducing pollution of the atmosphere.
Crankcase Emission Control System
Your YCF Mini-Motorbike's engine is equipped with a closed crankcase system designed to prevent the
release of crankcase emissions into the atmosphere. Exhaust gases return to the combustion chamber via the
carburettor where they dilute the air/fuel mixture.
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