Lumbar Support
To increase lumbar support on LSO models, press
the plus sign on the lumbar support switch. To de-
crease lumbar support on LSO models, press the
minus sign on the switch. To increase lumbar support
on non-LSO models, rotate the lumbar support knob
forward. To decrease lumbar support on non-LSO
models, rotate the knob rearward.
Damper Adjustment
Press the damper adjustment switch to adjust the
damper.
National 2000 Series Seat
See Fig. 5.5 for seat adjustment controls.
Back Cushion Tilt
To tilt the back cushion, turn the back cushion tilt
knob until the desired position is reached.
Height Adjustment
To raise or lower the height of the seat, use the
height adjustment switch on the side of the seat.
Fore and Aft Seat Adjustment
To adjust the fore and aft position of the entire seat,
move the fore and aft seat adjustment lever to the
left and slide the seat forward or backward to the
desired position. Move the lever back to its original
position to lock the seat in place.
Rear Cushion Adjustment
To adjust the height of the rear of the seat cushion,
remove your weight from the seat and turn the rear
cushion adjustment knob to one of three positions.
Isolator
Also called a Chugger Snubber
®
, the isolator reduces
the amount of road shock by isolating the occupant
from the motion of the vehicle and allowing the seat
to move in a simple pendulum motion. To use the
isolator feature, turn the isolator handle to the hori-
zontal position. Turn the isolator handle down when
the isolator feature is not desired.
Lumbar Support
To adjust the lumbar support, use the lumbar support
switch on the side of the seat to give more or less
support to your lower back.
Bottom Cushion Front Height
To adjust the height of the front of the bottom cush-
ion, lift the bottom cushion front height adjustment
handle, and pull forward or push back to the desired
setting.
Seat Belts and Tether Belts
General Information
Seat belt assemblies are designed to secure persons
in the vehicle to help reduce the chance of injury or
the amount of injury resulting from accidents or sud-
den stops. For this reason, Daimler Trucks North
America LLC urges that the driver and
all
passen-
gers, regardless of age or physical condition, use
seat belts when riding in the vehicle.
11/14/2000
1
2
3
4
5
f910445
6
7
1. Back Cushion Tilt Knob
2. Lumbar Support Switch
3. Height Adjustment Switch
4. Fore and Aft Seat Adjustment Lever
5. Bottom Cushion Front Height Adjustment Handle
6. Isolator Handle
7. Rear Cushion Adjustment Knob
Fig. 5.5, National 2000 Series Seat Adjustment Controls
Seats and Seat Belts
5.4
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