The low-emission engine was selected for its ability to provide ample power at low revolutions. Its position, between hopper and cab, affords ease of access for servicing. All engine filters and main service points can be reached from the large working platform or by additionally removing the forward easy-access panel. The Scarab fluid drive system is directly coupled to the auxiliary engine. By eliminating drive belts, gearboxes and flywheel couplings, it ensures quiet, efficient sweeping and suction performance and a high degree of reliability. All the hydraulic control components are housed in a secure locker.