-Five-stage, foam-paper-nylon system with advanced directional air flow provides very clean air for better saw performance -Reinforced aluminum blade guard with 70° range of limitless positioning using a marked knob handle -Improved ignition system with larger flywheel and rare earth magnets for more power -Cutting arm position simply changes from center position to flush (outboard) position allowing cuts directly adjacent to curb edges, walls or directly above the ground |