Britax First Class Si User manual

Brand: Britax

Model: First Class Si

Category: Car seats

Type: User manual

USER GUIDE - TO BE STORED IN RECLINE FOOT

An extremely practical long lasting child seat

Birth to 18kg (birth to around 4 years)

Rearward facing for baby up to 13kg or forward facing

for an older child between 9kg and 18kg.

THE MOST TESTED CAR SEAT ON THE ROAD

*WARNING: DO NOT use on passenger seats fitted with a

front airbag unless your vehicle manufacturer confirms it is safe.

UNIVERSAL

Up to 18kg Y

03.44.166

First Class Si

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Thank you for choosing Britax

It is important that you read this User Guide BEFORE trying to install your child car

seat (surveys have revealed that 7 out of 10 car seats are not installed correctly or

being used properly – Source: RAC). The First Class Si is designed for children from

birth to approx four years (Birth to 18kg). It is designed to carry children from Birth

to 13kg in rearward facing mode and 9kg to 18kg in forward facing mode.

This manual also contains a section on how to care for your child car seat.

Contents

Vital information – Read now page 02

Frequently asked questions page

Crucial parts of your child car seat page

Fitting your child in the First Class Si

Adjusting the harness page

Checking the height of the shoulder straps page 06

Removing your child from the First Class Si page

Changing the height of the shoulder straps page

Fitting the seat rearward facing page 11

To remove the First Class Si from the car page 13

Removing the Newborn Insert page 14

Fitting the seat forward facing page 16

Option A - standard routing page 16

Option B - alternative routing page 19

Reclining the seat page 21

Looking after the First Class Si page 22

Removing the cover page 22

Cleaning the cover page 23

Cleaning the harness, chest pads and seat page 23

Refitting the cover page 23

Removing and cleaning the buckle page 24

Important information - read before your first journey page 25

Final Checklist page 26

If in doubt page 26

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Vital Information - READ NOW

DO NOT

under any circumstances use a rearward facing seat on

passenger seats fitted with airbags.

DO NOT use as a forward facing seat on passenger seats fitted

with a front airbag unless your vehicle manufacturer confirms it is safe.

DO NOT Use the First Class Si on side facing vehicle seats.

DO NOT Use the First Class Si on rearward facing vehicle seats.

DO follow these user guide instructions in the order shown and get to know your

First Class Si before installing it in the car.

DO keep this user guide safe for future reference. There is a storage facility for it on

the recline foot.

DO make sure that you adjust the harness to fit the clothes your child is wearing

before each journey - a fitting for winter clothes may be too slack for a child

wearing summer clothes.

DO cover the First Class Si if your car is left in direct sunshine. Metal and plastic

fittings can become hot to touch in sunny weather and the cover may become

faded.

DO always keep the First Class Si secure. Even if it is not being used by your child.

DO make sure the vehicle seat-belt is only used in the seat-belt guides described in

this user guide.

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Frequently asked questions

No child seat is escape proof

Harness systems cannot be designed to be completely “child proof” and yet comply

with the legal requirements of European Standard ECE R44. The harness must be

fastened and adjusted correctly at all times and children encouraged to remain

within the harness system.

Second-hand car seats

The Hampshire Trading Standards Authority and Britax advise that child car seats

should not be bought or sold second-hand. Many seats sold through local

advertising and car-boot sales have been found to be dangerous. Please dispose of

your child car seat safely.

Does the First Class Si fit all cars?

All makes, models and years of car differ from one another and it is not

guaranteed that this restraint will fit your car. For advice as to the suitability of

this restraint for your car please call our Customer Service Helpline on 01264

386034. Alternatively visit Fit-Finder on our web site at www.britax.co.uk

When do I need to use the newborn insert?

The newborn insert is designed to allow babies to fit the seat comfortably when

used in rearward installation. It is designed for use from newborn to a

maximum of 3 months.

Can I put my child in the First Class Si facing forward before they reach 9kg in

weight? No, the weight range corresponds to the European standard applying to car

seats and the First Class Si has been tested and approved for forward facing

installation from 9kg. In addition to weighing 9kg, your child should be able to sit

unaided with confidence.

When do I adjust the harness to the correct height for my child?

When you first purchase the First Class Si, then periodically as your child

grows. (see ‘Changing the height of the shoulder straps’ on page 8)

Can I buy a spare cover in the same fabric I currently have?

Spare covers are available in SELECTED fabrics only. To find out which fabrics

you can choose please contact our Customer Service Helpline on 01264 386034

What do I do if the harness buckle does not click when I fasten it?

Follow the instructions “Removing and cleaning the harness buckle” on page 24

When should I install the seat facing rearwards?

The First Class Si should be installed rearward facing for all new born babies

and babies up to 13kg in weight.

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IMPORTANT - The First Class Si MUST only be used with a lap and diagonal

seat-belt (approved to UN/ECE regulation No.16 or equivalent standards).

This is a lap-belt

Diagonal

Lap

This is a lap and diagonal seat-belt

Crucial parts of your child car seat

These are the different parts of the First Class Si. You need to know these before

installing the First Class Si in your car.

Types of seat-belt

10. Adjuster strap

11. Diagonal seat-belt guides

12. Seat shell

13. Red seat-belt lock

14. Routing label

15. Alternative routing position

16. Yoke (between shell and base)

17. Base

18. Recline foot for rearward facing use

19. User guide storage (in recline foot)

1. Shoulder strap slots

2. Chest pads

3. Harness

4. Buckle

5. Buckle comfort pad

6. Seat-belt guides (lap belt) for

rearward facing use

7. Newborn insert

8. Harness adjuster button

9. Recline handle

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Using the First Class Si

Preparing to install the First Class Si in the car

IMPORTANT -

You must adjust the height of shoulder straps of the harness

to the correct position for your child

BEFORE installing the First Class Si in

the car, as they cannot be adjusted once installed in the car.

Adjusting the Harness

Unfasten the buckle by pressing the red

harness buckle button (a) and place your child

in the seat. Fit the harness around your child.

To fasten the buckle (b); first fit the two upper

sections together as shown, then push them

firmly into the lower section until you hear a

positive click.

With one hand, press and hold down the

harness release button. Then, with the other

hand below the chest pads, pull the shoulder

straps forwards.

Check the harness is not twisted, then gently

pull the harness up to tighten the lap sections

which are designed to fit low down on your

child's body.

Pull the adjuster strap forward making sure the

harness is a comfortable but FIRM fit around

your child. Make sure the harness straps are

not twisted.

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Finally, pull both chest pads down from your

child's shoulders onto the chest.

REMEMBER - The chest pads

are an important safety feature

NEVER use the First Class Si

without them.

Now check the height of the shoulder straps as shown below.

Checking the height of the shoulder straps

IMPORTANT – If your baby weighs less than 13kg, refer to ‘The height of the

shoulder straps (rearward facing use)’. If your baby weighs 9-18kg, refer to ‘The

height & shoulder straps (forward facing use)’.

NO - Too high YES - Correct NO - Too high

Undo the harness and go to Changing the Height of the Shoulder Straps on page 8

To fit your child into the First Class Si refer to ‘Fitting the First Class Si (rearward

facing) on page 11

The shoulder straps MUST be threaded through the slots in the cover and shell

nearest the top of your child’s shoulders. If in any doubt use the slot just below the

shoulder rather than above it.

The height of the shoulder straps (rearward facing use)

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Undo the harness and go to Changing the Height of the Shoulder Straps on page 8

To fit your child into the First Class Si refer to ‘Fitting the First Class Si (forward

facing) on page 16

The shoulder straps MUST be threaded through the slots in the cover and shell

nearest the top of your child’s shoulders. If in any doubt always use the slot above

the shoulder rather than below it.

Once you reach the top slots your child may continue to use the seat until their eye

line becomes level with the top of the seat shell or their weight exceeds 18kg.

The height of the shoulder straps (forward facing use)

NO - Too high NO - Too low YES - Correct

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Changing the height of the shoulder straps

IMPORTANT - You must adjust the height of the shoulder straps before

you install your child seat in a car.

Removing your child from the First Class Si

To help prevent the harness from

twisting when you remove your child

from the seat, loosen the harness by

pulling below the chest pads, press the

harness buckle button to undo the

harness and then lay the shoulder straps

on the outside of the seat as shown.

Carefully place the First Class Si on the floor.

With one hand press in and hold the harness

release button. With your other hand below

the chest pads, pull the shoulder straps

forward as far as possible to loosen the

harness.

With the First Class Si fully reclined, open the

seat-belt guard at the back of the shell. Pull

the yoke out from behind the seat and unhook

one shoulder strap.

Handy Tip

- You will find it

easier to do one shoulder strap

at a time and make sure that the

buckle is fastened.



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Pull the cover from the top of the seat so

that you can see the slots in the seat shell.

Pull the shoulder strap and the chest pad

strap forward and towards the centre of the

shell, easing the metal tab and straps

through the slot. Then thread them through

to the front of the cover.

Handy Tip

- An alternative

recline position may make

access easier.



Handy Tip - Use your other

hand to help angle the metal

tab into the slot if necessary.



Re-thread the straps through the chosen slots in the cover. Then (A) thread the end of the straps

through the matching slot in the seat shell until the metal tab is against the slot. Then (B) ease

the metal tab through the slot by pushing it towards the back and centre of the seat shell. Make

sure the straps are not twisted.

Shoulder strap

Chest pad strap

IMPORTANT - The metal tab and chest pad strap should always lie

underneath the shoulder strap as shown.

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Hook the shoulder strap back onto the

yoke, making sure that the adjuster

strap is not twisted and that the

thread colours on the shoulder strap

match those on the adjuster strap.

Repeat from step 2 with the other

shoulder strap.

Put the cover back. Pull both shoulder straps forward to remove any slack. Make sure the harness

is threaded through the buckle tongues as shown above.

IMPORTANT -

The shoulder straps and the chest pad straps MUST be

threaded through the same pair of slots.

✔

✘

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Fitting the First Class Si Rearward Facing

EXTREME HAZARD Do not use on passenger seats equipped with air bags.

... and then pull the seat shell forward as far as

it will go. Let go of the recline handle and

make sure the First Class Si is locked into the

recline position.

Before installing the First Class Si rearward

facing it must be fully reclined. First lift the

recline handle up...

Locate the recline foot underneath the seat

(see Crucial parts of your child car seat on

page 4). Pull out the recline foot and swing

round until it ‘clicks’ into the base bottom.

Place the First Class Si rearward facing on the

car seat. Push it firmly against the back of the

car seat ensuring that the recline foot and seat

frame are resting on your car’s seat and that

the front of the seat shell is resting on the

upright section of your car’s seat.

Up to 9kg, and until the baby can sit unaided with confidence, you must ONLY

install the First Class Si rearward facing using a lap-and-diagonal seat-belt.

When your child is newborn, the Newborn Insert should be used at all times. Once

your child reaches a maximum of 3 months the insert should be removed (see

section ‘Removing the Newborn Insert’ on page 14). To see if the shoulder straps

are at the correct height for your child, see the section ‘Checking the Height of the

Shoulder Straps’ on page 6.

CHECK THAT:

YOUR BABY WEIGHS LESS THAN 13KG AND THE SHOULDER

STRAPS ARE THE CORRECT HEIGHT FOR YOUR CHILD.

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Thread the lap section of the seat-belt around

both seat-belt guides underneath the front of

the First Class Si shell. Make sure that the lap

section of the seat-belt is not twisted and

remove all slack from this section of the belt

before continuing.

Fasten the seat-belt across the front of the

First Class Si.

DO NOT try to go around the back of the First

Class Si first – it will not work that way. Feed

the lap section down between the car seat and

the First Class Si.

Pull the diagonal section of the seat-belt over

the top of First Class Si. If your seat-belt

appears too short, see the blue box on page 13.

Then tighten the seat-belt by first pulling

here...

Pull

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... and then, while holding the First Class Si in

place, pull here.

...Thread the belt around the diagonal seat-

belt guide on the side of the seat...

The First Class Si should now be secure (seat

shown in upright position for clarity only).

IF YOUR SEAT-BELT APPEARS TOO SHORT

1. Is the First Class Si pushed hard against the back of the car seat?

2. On adjustable seats, make sure that the vehicle seat is adjusted as far back as it

will go (such as for a tall passenger).

3. In cars with a seat-belt height adjuster, make sure that it is in its lowest position.

4. For further advice, contact our Customer Services Helpline.

To remove the First Class Si from your car

Simply unfasten the seat-belt and unthread it from the guides.

To stow the recline foot

To return the recline foot to its stored position, simply swing it back into the

underside of the First Class Si. You should hear a click as it disengages from its

locked-open position, and another as it locks into its stowed position. The recline

foot is only securely stowed once you hear this click.

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Removing the newborn Insert

Remove the buckle comfort pad by pulling it

over the buckle.

With one hand press in and hold the harness

release button. With your other hand below

the chest pads, pull the shoulder straps

forward as far as possible to loosen the

harness.

Pull the buckle through the newborn insert.

Un-fasten the studs in each side of the

newborn insert and pull the shoulder straps

clear of the slots in the newborn insert.

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The newborn insert can now be removed.

Ensure that the strap adjuster goes through to

the underside of the seat shell, and ensure that

it rests horizontally so that it can't be pulled

back through the shell. Pull on the buckle to

make sure that it is secure and that the strap

adjuster does not come back through.

The crotch strap length will now need

shortening. To do this, rotate the exposed

metal strap adjuster and push it through the

slot in the cover and the seat body. Pull on the

buckle to ensure that the adjuster does not slip

though. The buckle strap is now the correct

length to be used without the insert.

Re-installing the insert

Follow the steps above in reverse order.

IMPORTANT – The crotch strap

MUST now be adjusted.

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Fitting the Seat Forward Facing. Standard Routing ‘A’

Pass the seat-belt between the seat base and seat

shell, as shown.

Place the First Class Si forward facing on the car

seat then recline it fully by lifting the recline handle

(under the front of the seat shell) and sliding the

seat shell into the most reclined position.

Fasten the seat-belt, making sure that the seat-belt

is not twisted and that it lies in the area of the base

indicated by the red routing label, as shown.

Thread the diagonal section of the seat-belt

through the red seat-belt lock. Make sure you pull

the seat-belt in the direction of the arrow.

CHECK THAT: YOUR CHILD WEIGHS MORE THAN 9KG.

YOUR CHILD IS ABLE TO SIT UNAIDED.

From 13kg you must ONLY install the First Class Si forward

facing using a lap-and-diagonal seat-belt.

IMPORTANT – Have you adjusted the harness to the correct height for your child? You must

adjust the height of the harness BEFORE installing the First Class Si in your car. It cannot be

adjusted whilst the seat is installed.

IMPORTANT – Ensure that the recline foot is in the stowed position before attempting to install the

First Class Si forward facing. See the section ‘To stow the recline foot’ on page 13

IMPORTANT – The newborn insert MUST NOT be used when the First Class Si is installed forward facing.

Installing with a lap and diagonal seat-belt

IMPORTANT – The First Class Si has two red Seat-belt locks.

ONLY USE the one FURTHEST away from the seat-belt buckle.

IMPORTANT – You must adjust the length of the crotch strap as shown in ‘Removing the newborn

insert’ on page 14

Option

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... and then pull here to tighten the diagonal

section of the seat-belt. It is essential to make

sure that the belt is pulled through the red

seat-belt lock at the correct angle, or else the

belt will bunch and come out.

Firmly push your First Class Si into the vehicle

seat using your body weight. Again, make sure

that the seat-belt still lies in the area of the

base indicated by the red routing label and

then pull the top section here...

Thread the belt around the diagonal seat-belt

guide on the side of the seat.

The First Class Si should now be secure. To

check pull forward firmly on the harness. There

should be little or no movement.

IMPORTANT – after installing the First Class Si you need to

check the position of the seat-belt buckle (see ”Checking the

position of the seat-belt buckle" on page 18).

If in any doubt contact our Customer Service Helpline on

(01264) 386034.

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Checking the position of the seat-belt buckle

If, after following the above instructions, your

seat-belt buckle looks like this the First Class Si

is NOT correctly installed and the seat-belt

may come undone. Try Alternative Routing ‘B’

shown on page 19.

If in doubt contact our Customer Service

Helpline on (01264) 386034.

If, after following the installation instructions,

and having used your body weight to tighten

the belt, your seat-belt buckle looks like this

the First Class Si should now be secure.

To check this try to pull the seat forward by

the harness. It should feel firm, not loose.

If, after following the above instructions, your

seat-belt buckle looks like this the First Class Si

should now be secure.

To check this try to pull the seat forward by

the harness. It should feel firm, not loose.

✔

✘

✔

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Fitting the Seat Forward Facing –Alternative Routing ‘B’

Thread the diagonal section of the seat-belt

through the red seat-belt lock. Make sure you

pull the seat-belt in the direction of the arrow.

Undo the buckle of the car seat-belt.

And re-fasten it so that it lies in the area

between the tubular frame and the plastic

moulding as shown on the routing label 'B'.

IMPORTANT – The First Class Si has two red seat-belt locks. ONLY USE the one

FURTHEST away from the seat-belt buckle.

Pull here to tighten the diagonal section of the

seat-belt. It is essential to make sure that the

belt is pulled through the red seat-belt lock at

the correct angle, or else the belt will bunch

and come out.

Option

Thread the belt around the diagonal seat-belt

guide on the side of the seat.

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Britax First Class Si User manual

Brand: Britax

Model: First Class Si

Category: Car seats

Type: User manual

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Britax First Class Si User manual

Britax First Class Si User manual

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