TM 10-3930-664-10 b. Removing Load Backrest CAUTION Removing and replacing the backrest requires two people.  The load backrest weighs 60 pounds (27kg) which exceeds the weight one person may safely handle. NOTE · Joysticks  used  to  control  mast  assembly  functions  are  spring  loaded  and  return  to  their  neutral positions automatically when released. · Use wrench supplied with the 4KRTFL and stored on the lid of the tool box to remove the attaching bolts securing the load backrest to the rotate carriage. (1) Pull rearward on LIFT joystick to raise forks enough for ground clearance. (2) Move SIDESHIFT joystick to the left to allow access to the left attaching bolt.  Remove left attaching bolt. (3) Move SIDESHIFT joystick to the right to allow access to the right attaching bolt.  Remove right attaching bolt. (4) Remove load backrest from rotate carriage. c. Picking Up a Load NOTE Joysticks used to control mast assembly functions are spring loaded and return to their neutral positions automatically when released. (1) Bring  mast  assembly  to  a  vertical  position  by  pushing  forward  or  pulling  rearward  on  TILT  and  ROTATE joystick as required. (2) Push forward or pull rearward on LIFT and SIDESHIFT joystick to lower or raise forks to desired position to fit beneath the load. (3) If angle of load is not the same as that of the forks, move the TILT and ROTATE joystick to the left or right to align the forks with the load. (4) Use the service brake and inching pedal to inch the 4KRTFL forward to position the forks under the load. As necessary, move the LIFT and SIDESHIFT joystick to the left or right to shift the forks left or right and center the forks on the load. 2-37