In 1992, John Deere introduced the 6500 Self Propelled Sprayer. The 6500 provides up to 72" under-axle clearance, a hydrostatic transmission, ergonomic electro-hydraulic controls, and a 420 U.S. gallon solution tank on either a three- or four-wheel chassis. For 1994, a front folding, self-leveling 60 foot boom which folds and unfolds completely from the cab, an electrically retractable step ladder, and a foam marker are being introduced.