Products / Tractor range / S Series tractors / Increased productivity

Increased productivity through better engine and transmission adaptability

To achieve the best performance, the Valtra S Series has three operating modes and an advanced speed management system. By selecting the right operating mode for your work, you can optimize fuel efficiency, work output and driving comfort. The drive pedal allows you to control either the speed or engine revs.

  • Two speed cruise controls and two engine rpm cruise controls
  • Speed cruise controls operated from the Valtra ARM driver’s armrest
  • Engine RPM cruise controls operated from the side panel
  • Speed cruise and RPM cruise controls can be used simultaneously
  • In PTO use the RPM cruise control recalls the engine speed needed to reach the selected PTO speed

Automatic mode

Automatic mode is the default setting when starting the engine. The operating principle is simple: automatic mode uses the highest possible transmission ratio to optimise fuel economy. For example, when pulling a load in difficult terrain the transmission adjusts the ratio (engine speed) to maintain a constant ground speed.

Automatic mode in PTO use

In PTO use the engine speed is set. The transmission decreases the driving speed when the load exceeds the power available. A good example of this is loader wagon work.

Semi-automatic mode

In semi-automatic mode the drive pedal works like a normal accelerator pedal. The CVT lever adjusts the transmission ratio in relation to the engine speed. The further back the lever is, the more revs are required to reach a certain speed. The semi-automatic mode is useful for pulling work when the operator wants to control the engine speed.

Manual mode

In manual mode the transmission ratio is controlled solely by the CVT lever. The automatic transmission is not used. Instead, in PTO use the speed is adjusted using the CVT lever and the tractor stops simply by braking (AutoTraction). The manual mode is suitable for many PTO jobs, such as potato or special crop harvesting.