Abstract: In order to prevent troublesome load change shocks in an internal combustion engine for a vehicle, the power control element thereof consists of an adjustment lever operationally positioned between two spring stops. The first spring stop provides elastic transmission of accelerator pedal commands from a fuel control cable and the second spring stop, which comprises a stronger spring, is effective only after the adjustment lever moves through a preset free path and engages a support fixed on the housing. As a result, during a fuel control cable motion defined by the first spring stop, the adjustment lever is not moved, whereas thereafter, during a further fuel control cable motion, the adjustment lever is moved since the force of the spring associated with the second stop is overcome.