Abstract: A tractor mower system comprising a mower attachment and an oil reservoir and power assembly. The mower attachment has a tool bar from which a plurality of mower units are suspended. The tool bar is connectable to a three-point hitch at the front end of the tractor. Hydraulic conduit means leading from the tractor to the motors that rotate the mowers have quick disconnect couplings. The mower units are staggered with their ends overlapping to avoid unmowed paths between them. Each mower unit has a plurality of rotary blades. The hydraulic reservoir and power assembly is connected to a three-point hitch at the back of the tractor. Fluid is pumped from the reservoir to the motors of the mower units and back to the reservoir through conduits. These conduits are also connected by quick disconnect couplings. The outboard portions of the tool bar support outboard mower units and are pivotal relative to the inboard section.