12 R 1200 C 12.3 Technical data R 850 C Starter motor Type Gear ratios Power rating kW Alternator Type Drive Gear ratios Maximum output rating W/V Maximum current at engine speed 4000 min-1 A Nominal current at engine speed 1000 min-1 A Max. operating speed min-1 Spark plug Bosch Electrode gap mm (in) Wear limit mm (in) Thread metric Ignition Ignition system Ignition trigger Ignition timing °CS Static ignition timing °CS Ignition coil Twin-spark coil Resistance: Primary Ω between terminals 15 and 1 Secondary kΩ between terminals 4a and 4b