Graco SLIMFIT Manual De Instructiones página 23

Note:
If you cannot get it tight, you may
pull the tail of the LATCH strap through
the belt path as shown and pull until
completely tight.
9. Attach Top Tether Strap
Extend the top tether by lpressing the grey
button and pulling out on the strap and
attach.
Consult vehicle's owner manual for
specific location.
10. Tighten Top Tether Strap
Remove all the slack.
11. Test For Tightness
Grab the sides of the seat where the
LATCH strap is and slide the car seat side
to side and front to back.
If the seat moves less than 1" (2.5 cm), it
is tight enough.
See section 6-A to secure your child.
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