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Commissioning and operationGearbox controlWith emergency operation active, the gearbox is controlled using 3 key functions in thepositions Neutral, Forwards or Reverse:KeyKeyNShift gearbox to neutral positionShift gearbox to forwards positionKeyShift gearbox to reverse positionGearbox shifting only takes place when the engine speed is in the idle range.It is advisable always to switch the gearbox into neutral first prior to reversing.However, if reverse is requested directly after forwards (or vice versa) and the engine isat a higher speed, the engine is automatically returned to idling speed prior to each activegear shift.As long as the desired state has not yet been reached, the key that has been pressedflashes.It goes out as soon as another control command is issued or it signals with continuouslight that the gear shift has taken place (display of the actual state).Engine speed controlIf the gearbox is in forwards or reverse position, two key functions can be used to increaseor decrease the current engine speed:KeyKey+–Increase engine speedDecrease engine speedAs long as the + or – keys are pressed (“Tastensysmbol einfügen”), there is a continuouschange in the engine speed.The rate of increase and / or rate of change is 50 revolutions per second.With a single brief press of the key, the engine speed changes by 10 engine revolutions.The engine speed is restricted downwards to the idling speed and upwards to the maximumpermitted engine speed.44