diono.com
radian 3QX
56
57
FOR
W
ARD–
FA
CING
FOR
W
ARD–
FA
CING
INSTALL USING LAP BELT WITH
5-POINT HARNESS : 22–65 lb (10–29.5 kg)
IMPORTANT:
For U.S. ONLY
harnessed forward-facing
installations using a LAP BELT
ONLY with NO top tether anchor
point available, you MUST install
the Diono Lap Belt Cushion.
1. Unhook and remove top
tether from storage location
2
on back of seat
.
2. Place car seat forward-facing
in back seat of the vehicle.
The entire seat bottom should
sit flat on the vehicle seat.
3. Loosely attach top tether
strap.
Do not tighten. Consult
vehicle’s owner manual for
specific location.
4. Slide the vehicle seat belt
through the forward-facing
belt path and out the other
side.
Buckle it. The seat belt
should lie as flat as possible
and not be twisted.
5. Tighten the vehicle seat belt.
Press down firmly in the center
of the car seat. To tighten, pull
on the loose end of the vehicle
lap belt to tighten it.
6. Tighten the top tether strap.
Push the car seat back while
tightening the tether strap to
remove all the slack.
7. Test for tightness.
Grab the
side of the seat on the buckle
side with one hand where the
vehicle seat belt strap is and
slide the car seat side-to-side
and front-to-back. If the seat
moves less than 1 in. (2.5 cm), it
is tight enough. Do not test by
grasping top of the seat.
Top Tether
2
1
2
3
4
5
6
7