Using The Chest Clip; Using The Lock-Offs; Infant Positioning Pillow; Seat Positions - Britax Marathon User Manual

BRITAX Child Safety, Inc.

Using the Chest Clip

1. Open the chest clip.
a. Press tabs.
b. Pull apart.
2. Push together
to fasten.
NOTE: Always
position the
chest clip at
armpit level.

Using the Lock-Offs

To Open:
1. Open the locking tab.
2. Open the clamp.
IMPORTANT: Both parts
of the lock-off must be
opened to secure a vehicle
belt.
To Close:
1. Close the clamp over the
vehicle belt.
2. Push down on the locking
tab where indicated until
a click is heard.

Infant Positioning Pillow

The infant positioning pillow
is designed to provide better
harness fit and comfort for
infants using this child seat.
IMPORTANT: The infant
positioning pillow must be
used with infants weighing up
to 22 lbs (10 kg) when using
a child seat in a rear-facing
position. Do not use over 22 lbs
(10 kg) or in a forward-facing
position.
24
b
a
1
Locking
Tab
2
Clamp
Locking
Vehicle
2
Tab
Belt
1
Clamp

Seat Positions

This child seat has 3 positions. To adjust, pull the recline
handle then rotate the child seat shell into the desired
position. Release the recline handle, then verify the child
seat has locked into position.
NOTE: Set the seat position BEFORE installing.
0°
90°
90°
Position 1 Position 2
Rear-Facing
When properly installed in the rear-
facing position, the back angle of the
child seat should be at least 30˚ for
children and up to 45˚ from vertical for
infants unable to maintain head and
neck control (not to exceed 45˚) when
the car is parked on a level surface.
Use the line as a guide to achieve the proper recline angle
for rear-facing installations. The line will be parallel to the
ground when the child seat angle is at the center of the
acceptable angle range (37.5˚). If necessary, the proper
recline angle can be achieved by placing a rolled towel or
pool noodle in the vehicle seat bight.
Forward-Facing
In forward-facing
installations, it is
important that the base
of the child seat rests
completely flat on the
vehicle seat. As seen
in the illustration, it is
permissible to allow up to
20% or 3 in. (7.6 cm) of
the base to hang over the
edge of the vehicle seat.
Some vehicle seats do
not allow enough of the child seat base to contact the vehicle
seat. If this is the case, adjust the recline angle to a more
upright position. Not doing so could cause the child seat to
not perform as intended.
MARATHON User Guide
0°
0°
90°
Position 3
30˚
0˚
3"
Acceptable Unacceptable
Overhang Overhang
45˚
90˚
3"
25