6
Figure 3
4.2.4 Regulate the choker (see Figure 4) to close position in winter and at the first time to full
open position when the engine is hot.
Figure 4
4.2.5 Pull the starter lightly for 3-5 times to make the fuel into the cylinder. Then pull it fast to
start the engine. Note: After start, the start rope should be contracted back slowly with hand’s help.
If the rope contracts back fast, it may cause damage of the starter.
4.2.6 After start, put the choker slowly to full open position. 5.2.6 Regulate the fuel handle to a
proper position to run at low speed for 3-5 minutes, then make spraying operation.
4.2.7 New machine should not work at full open position within the first 4 hours. The speed
should be controlled at 4000-5000 r/ min, thus enabling the engine to have a good match and do
reliable job.
4.3 Spraying
4.3.1 Adding chemical liquid before adding chemical liquid, spray which water to test if there is
leakage. When adding chemical liquid, it should be neither very fast nor excessive full. The liquid
must be assured to be through the filter in order to avoid foreign matter coming into the chemical
tank to cause coming into the chemical tank to cause machinery breakdown or nozzle block. After
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