Britax FRONTIER 85 User Manual

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Turn and slide the retainer 
through the slot to remove.
Pull the harness webbing tight 
from the other side before 
pulling the retainer through.
Repeat steps 5 and 6 for the 
remaining harness buckle strap.
Remove the locking screw 
from the head restraint 
adjuster and insert into the 
shell to store. 
IMPORTANT: Store the screw in 
the slot provided in the shell. Store 
all parts of the harness in a safe 
place. These parts will be needed 
to convert the child seat back to 
harness mode.
Pull the harness straps out of 
the slots.
DO NOT remove the HUGS™ 
chest pads or chest clip.
On the bottom of the seat, 
slide the retainer of one 
harness strap up and pull it 
away from the child seat shell.
This seat may only be used in booster mode with children who 
stand 42 – 65 in. (106.7 – 165.1 cm) in height and weigh more than 
40 lbs (18.2 kg). Britax recommends booster mode only after the 
child outgrows harness mode.  
Harness to Booster Mode
To remove the harness and buckle:
Loosen the harness.
Press release lever
Pull both harness straps forward
Remove the belt shield and 
unhook the harness straps from 
the yoke.
Replace the belt shield (a) then 
store the yoke in the slot (b).
Locking 
Screw storage
Switching Between Modes
Switching Between Modes