KS Motorcycles K-LIGHT125, Maintenance Manual

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Emission regulation CO HC NO
X
Emission standard
≤1.14g/km ≤0.38g/km
0.07g/km
※ If the emission standard changes, the newest national provision shall prevail.

If the regular inspection is not carried out at the dealers or service centers of this Company, this Company
will not be responsible for the prohibition. Please make necessary inspection at any time to maintain the best
motorcycle conditions.
Note:
①
The cleaning frequency of air filter should be increased if the motorcycle is ridden on sandy roads
or in the seriously polluted environment to prolong the service life of engine.
②
If the motorcycle is always ridden at a high speed or in a frequent manner with large mileage, the
maintenance degree should be increased.
Precautions for guarantee of emission standards
1) The unleaded gasoline should be restricted.
2) The engine oil with the specification specified should be used.
3) Please carry out maintenance in accordance with the provisions of the regular maintenance table.
4) For the exhaust control system, arbitrary adjustment or replacement (including use of spark plug, idle
adjustment and ignition timing) is strictly prohibited.
5) Precautions:
The catalyst device will be greatly affected due to the block of ignition system, charging system or fuel
system; therefore, please go to the dealers or service centers specified by this Company for inspection,
adjustment or maintenance if you feel that the engine is unsmooth.
6)
The exhaust control system of the motorcycle complies with the national regulations. Therefore, if any
parts of the system need to be replaced, make sure to use the original parts of this Company and carry
out replacement by the specified dealer or service center
17.3 Mechanical Function of Exhaust Control System
Summary
The exhaust countermeasure is to use four-stroke single-cylinder engine and air induction device, maintain a
good level of exhaust and adopt activated carbon canisters for exhaust from fuel evaporation.
※
Engine improvement
Strive to increase the combustion efficiency depending on improved spark plug, combustion chamber,
compression ratio, ignition time, exhaust system and other engine elements and high intake and exhaust
efficiency.
※
Air induction device
After air is induced into the exhaust pipe, the chemical reaction of incompletely burnt CO and HC will occur
to generate harmless gases.
Distinction Device Constituent part Function
Exhaust
system
Catalyst device Catalyst convertor
The canned oxydic catalyst installed in the
middle of exhaust pipe will oxidize CO,
HC and NOX.
17.4 Catalyst Conversion System
17.4.1 Construction:
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