Britax MARATHON CLASSIC User Manual page 23

• If your vehicle is equipped with an automatic
locking retractor (ALR), use of the lock-offs is not
required as long as the ALR is locked. Check your
vehicle owner's manual to determine the type of
retractor your vehicle has, and how to lock the
retractor.
WARNING!
with a non-locking, two-point Emergency
Locking Retractor (ELR) vehicle belt.
8 Verify that vehicle belt is tight, locked, and that
the child seat is secure.
• The child seat is secure when it cannot be moved
more than 1 in. (2.5 cm) front-to-back or side-to-
side at the belt path. If the child seat is not secure,
repeat the installation process or use an alternate
seating location.
• When properly installed in the rear-facing position,
the back angle of the child seat should be 30º – 45º from vertical (not to
exceed 45º) when the car is parked on a level surface (Fig. F).
• If necessary, the proper recline angle can be achieved by placing a rolled
towel or pool noodle in the crease of the vehicle seat to level the child seat's
base.
WARNING!
the vehicle seat. This could cause your child seat not to perform as
intended.
• Rear-facing installation can be improved by the use of the Versa-Tether. See
pages 29 – 32.
Do not use this seat
Do not raise the child seat off the front edge of
Installation: Rear-Facing
e
F
21