Automatic choke - apriliaforum Feb 05, 2009I have a sr50 morini and the tempreture gauge does not work on it, the sensor has snapped off the cylinder. I'm wondering that the problems I'm having may be that the bike thinks it is always cold, due to the sensor not being connected, and therefore the bike is constantly choking.. Would this be the answer to the problems I'm having? Carburetor for Aprilia SR 50 R Factory - MOTORKIT Carburetor for Aprilia SR 50 R Factory. Trier par. There are 19 products. Electric choke for carburator Dellorto / Gurtner / Keihin . 11,99 € Electric starter for scooters with Dellorto / Gurtner / Keihin carburators. 2 wires, rectangular connection. More details Add Carburator YSN 12mm choke manual .