| 1. To start and warm up the engine. |
| 2. To kill the engine. |
| 3. To connect a control tachometer to the engine. |
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4. To turn the lever (2) so that the butterfly valve completely opened (the 1-restrictive screw of a butterfly valve). |
| 5. To start the engine, without pressing an accelerator pedal. |
| 6. To check the frequency of rotation of the engine. It has to be within (3600±200) min.-1. |
| 7. If it is necessary, to adjust rotation frequency, turning the restrictive screw. |