Testing Rotax 912/914 Generator and Voltage Regulator/Rectifier
Our original installation of the Rotax 912/914 r egulator/ r ectifier. 24 years later, the two brown wires on the left were replaced by yellow wires of a new stator, see photo below. The Rotax 912/914 electrical system may fail unexpectedly. I t happened to us once at a really inconvenient time : S ee Rotax Goes South As We Go West . Most likely the electrical failure is caused by the voltage regulator/rectifier. To ver ify this , we now carry in the plane a small multimeter that measures AC/DC voltage and resistance and use the checklist below. The checklist assumes a standard installation as described in the Rotax installation manual Section 24-00-00, without additional external generator, and that the voltage is not in the normal range. Testing Electrical System Beyond Regulator/Rectifier It is possible, though quite unlikely, that the electrical failure is caused by something other than the generator and regulator/rectifier. There is an almost infinite variety of poss