I recently inherited a John Deer 250 Skid Steer Loader. I can drive the machine forward/backward turn, etc. However, I can't get the boom or bucket to move. Plenty of hydraulic fluid Boom is unlocked and foot pedal is unlocked. Handels: Handles are free to move forward & backward but will not move in or out more than a few inches. Nothing happens when pressing the buttons on the handle. Pedals: Left foot pedal will not move Right foot pedal moves well, I hear an engaging hydraulic sound when I engage it, but nothing will happen.