Ducati SPORTTOURING ST3 Manuel D'utilisation page 150

5) As the engine warms up, move the cold start lever
gradually towards the vertical position (A, fig. 43). Once
fully warm, the engine should hold idling rpm with the cold
start shut down.
High ambient temperature (over 35 °C/95 °F):
Follow the same procedure, however, do not use the cold
start device.
E
Cold ambient temperature (below 10 °C/50 °F):
Follow the procedure for "Regular ambient temperature",
however allow 5 minutes for the engine to warm up (see
step 5).
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