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ENGLISH
Try to avoid dumping the vehicle. It results in fuel leakage from the fuel tank and causes the carbon
tank to fail.
Ensure the firm pipe connections of the fuel evaporation system, to prevent pipes from dropping out,
which may result in the direct discharge of fuel vapor into the atmosphere.
Do not adjust the carburetor at will.
1. Working Principles of Evaporative System
Attach a carbon tank and close the fuel tank. The fuel vapor in the fuel tank can only be connected to
the atmosphere through the carbon tank. When the vehicle is at rest, the fuel vapor in the fuel tank enters
the carbon tank through the absorption mouth, and is adsorbed in the activated carbon in the carbon tank.
The desorption mouth of the carbon tank is installed on the intake pipe. When the vehicle is running, the
negative pressure in the connecting tube sends the fuel vapor adsorbed in the activated carbon of carbon
tank back to the engine via the carbon tank solenoid valve. Thus the pollution is reduced.
Section 4 Evaporative System (EVAP)
State
Ⅲ
Emission and Fuel Evaporation Schematic Diagram
When a large amount of incompletely combusted mixed gas flows into the hot catalytic converter, it
may appear a re-combustion phenomenon, and lead to the catalyst converter being overheated in a way to
leave the catalytic converter invalid. To prevent this phenomenon and any other damage, please note the
following matters:
[1.]Only unleaded gasoline (#90 or #93 unleaded gasoline) can be used. The use of leaded gasoline
will cause the catalyst converter to fail.
[2.]When the motorcycle is running, do not turn off the master switch or slide the motorcycle in zero
position state taxi, to avoid the generation of a large amount of incompletely combusted mixed gas.
[3.]If the ignition or combustion system is not working properly, it will also cause the catalyst converter
to overheat.
[4.]After the motorcycle runs for a while, be careful that the exhaust pipe surface will become very hot.
[5.]When refueling, do not spill or overflow the gasoline on the exhaust pipe (high-temperature exhaust
pipe contacting with gasoline may be cause a burning).
Oil vapor
Active
carbon
tank
ECU
magnetic
valve on and
off
Magnetic valve
Bring oil vapor to
combustion chamber
through fresh air,
thus the oil vapor is
debsorbd
Throttle
valve body
Engine
Air
Air
Air
Air cleaner
Oil vapor
F u e l
tank
A c t i v e c a r b o n
absorb oil vapor
to avoid emission
to the air
Warning
