A slasher saw system connectable to a source of hydraulic power which requires hydraulic lines for power and operation. First, a pressure/power hydraulic line is actuated to turn the saw on and bring the saw down to cut through a stack of timber. Second, the hydraulic pressure/power to bring the saw down is actually provided via back-pressure from a return line returning hydraulic fluid to the source of hydraulic power from the saw. Third, a separate line is used to power the hydraulic cylinder used to raise the saw arm again. Fourth, a separate line including a one-way fluid valve allowing hydraulic fluid flow only from the hydraulic fluid output of the saw blade motor to the hydraulic fluid input for the saw blade motor.