FS8400 D 3-speed gearbox flat saw is a professional saw perfect for use on large jobs. A Tier 3/Interim Tier 4 engine reduces emissions and the patented power transmission system transmits more power to the bladeshaft (72 hp), with optimum torque, than similar models in its class. The addition of the 3-speed gearbox enables different sized blades to run at their ideal performance level – ensuring you get the most out of every cut.