TM 10-3930-664-10 b. Mast Assembly Controls. KEY OR CONTROL FUNCTION 1 Lift and Sideshift Joystick Lifts or lowers forks and shifts forks to the left or right. Push handle forward to lower forks. Pull handle rearward to lift forks. Pull handle to the left to shift forks to the left. Push handle to the right to shift forks to the right. 2 Tilt and Rotate Joystick Tilts forks forward or rearward and rotates forks clockwise or counterclockwise. Push handle forward to tilt forks forward. Pull handle rearward to tilt forks rearward. Pull handle to the left to rotate forks counterclockwise. Push handle to the right to rotate forks clockwise. c. Operator’s Seat and Miscellaneous Controls. KEY OR CONTROL FUNCTION 3 Operator’s Seat Lever under the  seat  controls  forward  or  rearward  movement  of  seat.    Seat height is adjusted by changing the elevation of the seat mounting plate. 2-10