John Deere L-series skidders feature increased power and stability due to the power-to-weight ratio, up to 40 percent faster cycle times of the boom, arch and grapple and an easily maintained electrical system that has fewer relays and switches and built-in diagnostic software. L-Series skidders have roomy, quiet cabs with large rear windows and ergonomically designed controls. The grapple design features box-style tongs for maximum strength, heavy-duty axles and a pressurized continuous-lube system with independent axle filters.
The continuously variable transmission, which is standard on all John Deere skidders, maintains a constant engine speed, reducing engine wear and increasing fuel economy. These skidders also have a very low diesel exhaust fuel consumption rate, which reduces the amount of diesel exhaust fuel needed compared to other similar engines. All L-series skidders feature electrohydraulic controls mounted in the armrest. With the optional rotating seat, the controls move with the operator allowing maximum control. John Deere's global positioning system technology, TimberNavi, is another optional feature which alerts the operator to streams, roads and power lines. It is available on all skidder models.
The L-series cable skidder, the 640L, features a 6.8-liter PowerTech diesel engine with a gross power of 218 horsepower, gross torque of 722 foot-pounds and a line pull of 41,000 pounds. John Deere's 748L grapple skidder has the same size engine as the 640L, but more engine output, while the 948L and 848L grapple models feature 9.0-liter PowerTech diesel engines.