Abstract: A skid steer or wheel loader having an implement, such as a bucket, arranged for elevational and tilting movements relative to the frame of the loader has a foot controlled hydraulic system that deters lift arm chatter. An accumulator is directly connected to the conduit between the control valve, which controls raising and lowering of the implement, and the end chamber of the lift arm cylinder that raises the implement. The spool of the control valve is positioned by a mechanically linked foot pedal. The end chamber that lowers the implement is not connected to the hydraulic fluid supply reservoir when the control valve spool is in its neutral position, so that down pressure may be applied to the implement for ground penetration and deter lift arm chatter without having to turn the system on or off at appropriate times.