The 2-cylinder engines of the SP-170 series are designed with twin spark plugs and can be equipped with a carburetor or a fuel injection. The generator is mounted on the rear output shaft. All engines are equipped with the ignition HKZ215 and the ECU030. The electronics of the HKZ215 can be installed on an additional system carrier which sits on top of the cylinders. The engine is available with or without system carrier.