Fisher-Price 79050 Owner's Manual page 40

For a lap and shoulder belt system:
4B
With the vehicle belt buckled,
push down on the base with
your knee and pull the shoulder
belt for the tightest possible fit.
HINT
Some vehicle belt systems have
labels with instructions for use with car
seats. Read the instructions on your
vehicle's belt or refer to your vehicle
owner's manual for specific instructions
on how to tighten and lock your vehicle
belt system.
Stay-in-View™ Infant Car Seat
38
Car Seat Installation with Base
4B