• Lock-off must be used at all times when
installing with a vehicle seat belt.
• Base doesn’t move more than 1 in side
to side at the belt path . If movement
is more than 1 in, twist the buckle and then
fasten the seat belt to help secure fit.
• Ensure tightness indicator is green after
each use. If it is not, open lock-off then
tighten belt. When tightness indicator
turns green, close lock-off
.
• Belts are secure and untwisted
• Recline angle is correct. Base is level
when only green is visible between
the two arrows on the level indicator.
No red should be visible .
STEP 1: Unbuckle seat belt.
STEP 2: Open lock-off.
STEP 3: Remove seat belt.
SAFETY CHECK
SECURING THE BASE (LAP BELT ONLY INSTALLATION)
UNINSTALLING THE BASE
2
BASE INSTALLATION WITH VEHICLE SEAT BELT
BASE INSTALLATION WITH VEHICLE SEAT BELT
LEVEL WHEN
NO RED
VISIBLE
LEVEL WHEN
NO RED
VISIBLE
LEVEL WHEN
NO RED
VISIBLE
4B
5B
STEP 4B: Route the vehicle belt
through the belt path while guiding
the lap portion of the belt as close
as possible to the topside of the
lock-off where the door hinges.
Buckle the vehicle belt.
STEP 5B: With one hand push down
base and hold firm as you pull lap
belt to tighten and remove any slack.
NOTE: TIGHTNESS INDICATOR
SHOULD BE GREEN.
STEP 6B: Close the top section
of the lock-off over the belt .
Second, close the bottom section
of the lock-off over the belt .
Make sure you push the bottom
of the lock-off all the way down
until you hear an audible click.
6B
LEVEL WHEN
NO RED
NOTE: Before closing the lock-off door, make sure the vehicle seat belt
has not slipped down into the belt path and is as close as possible to the
topside of the lock-off where the door hinges.
NOTE: Check that the base doesn’t move more than 1 in side to side at
the belt path. If movement is more than 1 in, twist the buckle and then
fasten the seat belt to help secure fit.
0225_MESA_INS_V4.indd 24-25 3/19/15 11:07 AM
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