Excavator offers four working modes
SK850LC Super ACERA heavy-duty full-size excavator has four standard working modes for enhanced performance. H mode allows heavy digging and high productivity. S mode delivers standard digging and increased fuel savings. B mode powers one-way flow attachments (e.g., breakers). A mode is for attachments that require two-way flow. Features seven-way adjustable suspension seat, cross-flow air ventilation and orange backlit monitor with sunshade for easy daylight viewing. Kobelco Construction Machinery America, Carol Stream, Ill.