20
AIR SYSTEM/ FUEL SYSTEM
AIR FILTER
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1.
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cover (2).
2.
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polluted or damaged, please replace with new one.
CHANGING INTERVALS
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should be replaced early. Under normal condition replace it refer-
ring the maintenance chart.
Reassemble in reverse order.
THROTTLE CONTROL SYSTEM
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Check the smoothness of accelerator pull wire.
Free displacement: 5-10 mm
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IDLE ADJUSTMENT
Start and warm up the engine for about 3 minutes, so that the en-
gine will operate in normal running temperature.
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U/min.
Create a round and stabile engine speed, using the air control
screw (2). The air control screw is located on the bottom of the
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to 1200-1500±100 U/min.
Pull the throttle for several times for acceleration and inspect
whether the idle speed is steady.
1
2
3
1
2
1
2
3
