The FS6600 D three-speed gearbox flat saw is a professional saw perfect for use on large- and mid-size jobs. A Tier III-compliant engine reduces emissions, and the patented power transmission system transmits significant power to the bladeshaft (60 hp), with optimum torque. The addition of the three-speed gearbox enables different sized blades to run at their ideal performance level—ensuring you get the most out of every cut.