| 1. Uncover the air filter and the air filter, being guided by the instructions provided in subsection 6.1.2. |
| 2. Start the engine, gradually increase speed to 3000 rpm and hold them at this level. Close a finger an opening of a vacuum hose of the valve of air supply on the basis of a casing of the air filter, then, quickly lower the lever of a butterfly valve in order that the engine returned to the normal speed of idling. When the lever of a butterfly valve is released and the engine will begin to come back to the normal speed of idling, in a hose of the valve of air supply depression has to be formed. If is not present, replace the valve. |
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