KEEWAY ATV250, Service And Maintenance Manual, Page: 46 / 97

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M i x e d a i r ( a i r b u r n i n g ) s y s t e m
The flowing process of mixtual gas
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The fuel oil flow out from the fuel tank depends on its gravity through the entering oil switch,at last flow into the
carburetor. The fuel oil had been filtered for three times in the above process(firstly,filter the fuel oil with netted nylon
pipe before entering in gasoline cleaner; secondly, filter it with
型腔
of gasoline cleaner; thirdly, filter it with cleaner
which located in oil entering switch and carburetor).
The air cleaner is installed on the left of the ATV. The fuel oil and clean air mixed and then become to be the
mixture air with fog form, the mixture gas enter into the firebox of engine to btub depends on the function of valve
intake and lever of cam axle.
The forming process of mixture air and the illustration of the gas flowing
Gas Fuel oil
Air Fuel tank
Depuration Gasoline cleaner
filtration Gas filter cavity
隔 焰
cleaner
Connecting jaws of air cleaner float chamber
Jet pipe
Throat pipe
Firebox
The rate of air btubing
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The flowing process of oil of carburetor:
When it be starting
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7-8
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1 There are six main flowing process of mixture gas:
When it be idle speed
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10-12
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1 1
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The process of oil entering
When it be slow speed
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12-14
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1 2
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The process of gas increase its concentration
When it be moderate speed
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15-17
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1 3
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The process of idle speed
When it be high speed
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13-15
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1 4
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The process of oil slow its flowing speed
5
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The process of oil moderate its flowing speed
6
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The process of oil accelerate its flowing speed