National High-Back Seat

57x d 7.03.000

The National high-back seat comes equipped with BackCycler and RollTek. See Fig. and Fig. for seat adjustment controls.

The BackCycler feature cyclically inflates and deflates an air bladder in the lumbar area of the seat. Used regularly during long periods of sitting, the BackCycler potentially relieves back strain.

The RollTek Rollover Protection System is described later in this chapter.

  1. Seat Height Adjustment

  2. Leg and Back Bolster Support

  3. Three-Zone Air Lumbar Support

  4. BackCycler Feature

  5. Back Recline Adjustment

  6. Track Slide Adjustment

  7. Cushion Extension

Fig. 1, Left Side Controls of National Seat

  1. Seat Height Adjustment: Pull up on the red valve to increase air pressure and raise the seat. Push down on the valve to lower the seat.
  2. Leg and Back Bolster Support: These two grey air valves inflate the sides of the seat cushion and the sides of the back cushion. Pull up on a valve to inflate an area of the seat and increase support. Push down on a valve to deflate.
  3. Three-Zone Air Lumbar Support: To adjust any of the three lumbar zones, pull up on a valve to inflate and push down to deflate. The further back the valve, the higher the lumbar zone it controls.
  4. BackCycler Feature: To operate, deflate all three lumbar support areas then press the BackCycler switch to the ON position. The Backcycler will inflate and deflate the lumbar area sections of the seat in 40 second cycles. Let the BackCycler go through two or three cycles before turning it off and reinflating the lumbar support areas to the desired comfort level.
  5. Back Recline Adjustment: Locate the triangular knob located at the back of the seat. Rotate it rearward to increase the recline of the seat and forward to bring the seat back to an upright position. The seat can recline up to 23 degrees.
  6. Track Slide Adjustment: The lever beneath the front of the seat cushion controls the fore-and aft position of seat. While sitting in the seat, move the track slide lever to the right, then move the seat forward or back. When the seat is in the correct position, release the track slide lever to lock it into position. The seat can move seven inches (17.8 cm).
  7. Cushion Extension: With your weight off the seat, pull the lever located directly beneath the front of the seat cushion to pull the seat cushion forward.

    1. Rear Cushion Tilt

    2. Suspension Base Isolator

    3. Front Cushion Tilt

    4. Armrest Adjustment

    Fig. 2, Right Side Controls of National Seat

  8. Rear Cushion Tilt: With your weight off the seat, rotate the knob clockwise to raise the rear of the seat cushion to the desired height. There are three rear cushion height positions.
  9. Suspension Base Isolator: Rotate the knob counterclockwise to enable the isolation feature. Rotate the knob clockwise to decrease the level of isolation. To turn the isolator off, turn the knob clockwise until completely tightened.
  10. Front Cushion Tilt: With your weight off the seat, rotate the knob clockwise to raise the front of the seat cushion to the desired height. There are three front cushion height positions.
  11. Armrest Adjustment: Rotate an arm to the full up position then rotate it fully down. Then slowly raise the arm as you listen for clicks. Each click represents one of seven armrest positions. Stop when the armrest is high enough to support your forearm in a horizontal position. Each armrest can be adjusted independently.
Note:
Parent topic: Seats and Restraints
Document Number: 0000107878
Manual Publication Date: 2024-05-09
Topic Publication Date: 2025-04-05