85425ea0 The accelerated idling turns

The engine has to be heated-up up to the normal working temperature, and turns of idling have to be normal.

1. Remove the air filter together with the vacuum hose connected to it.
2. Connect to the engine a tachometer according to the maintenance instruction.
3. Slightly slightly open a butterfly valve so that the adjusting screw was installed on the second step of a cam.
4. Start the engine, without pressing an accelerator pedal. Turns of the engine have to correspond to the required values. Otherwise establish the required engine turns, rotating the adjusting screw of the accelerated idling.