Lifan LF 150-10B, Руководство пользователя

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Index mark
Mark T
Fig. 28
Adjusting
screw
Locknut
VALVE CLEARANCE
(Fig. 28 )
Check valve clearance when the engine is cold at the specified intervals.
Take the top view hole (for ignition timing) cap and magneto cap out of the left cylinder
head cover.
Rotate the flywheel counterclockwise until mark T on the flywheel aligns with the
index mark on the view hole. Check it is in TDC of the compression stroke by moving
the rocker arms. If they are free, it means check can be done. Otherwise, rotate the fly-
wheel through 360 .
Clearance should be 0.08mm for the intake valve and 0.12mm for exhaust valves.
If it is necessary to make an adjustment, loosen the valve lock nut and turn the adjust-
ing screw so there is a slight resistance when the feeler gauge is inserted. Then tighten
up the lock nut, and recheck the clearance.
EXHAUST MUFFLER (EP)
Clear away regularly carbon deposit in the exhaust pipe; check the exhaust pipe inside
for crack and washer for damage, and repair or replace if necessary.
WARNING Replace the gasket whenever a muffler is disassembled. The muffler
becomes very hot during operation and remains hot for a while after stopping the
engine. Be careful not to touch the muffler after stopping the engine.
3-WAY CATALYTIC CONVERTER(EP)
(Fig. 29)
3-way catalytic converter is mounted on the exhaust system of motorcycle. It is designed
to decrease contaminations such as CO, HC, NOx, etc. by redox reaction to catalyst when
the exhaust gases flow through the device.
Applying the catalyst controls the pollutant emissions from the motorcycle, i.e. a chemi-
cal reaction sets in when exhaust gases pass through the converter that contains a catalyst.
The noble metal catalyst is characterised by good adhesiveness, and accelerates a chemi-
cal reaction without itself being affected. Its basic principle is as follow: pollutants in
the exhaust gases, such as CO, CH, NOx, etc, spread into micro-holes in the catalyst when
gases pass through the device, an adsorption reaction happens on the surfaces of catalyst,
as a result, converting them into harmless compounds (CO
2
, H
2
O, N
2
, etc.) and entering
the air. The purging efficiency of catalyst varies with temperature of, density of and speed
of gases.
Attention should be drawn to the following points during service:
1. Handle 3-way catalyst with care, don’t knock or press it, and keep away oil and dirt.
It should be stored in dry and well-ventilated place.
2. Never let acid liquid or electrolyte infiltrate into the exhaust muffler, otherwise, make
the catalyst unefficient.
3. Unleaded gasoline should be used.
Fig. 29
ＬＦ １５０－１０Ｂ（ＥＮＧＬＩＳＨ）Ａ．ｐ６５
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