Brompton OM4-1 Manual de usuario
OWNERS MANUAL
ISO 4210-2
CITY AND TREKKING BICYCLES
CPSC 16 CFR 1512
NORTH & SOUTH AMERICA
MAINLAND EUROPE
OM4-1
COMPONENT NAMES
SADDLE
PENTACLIP
SEATPOST
SEAT CLAMP
SUSPENSION BLOCK
LOWER STOP DISC
REAR FRAME
CHAIN
REAR WHEEL NON-FOLDING PEDAL
CRANKSET
FRONT WHEEL
FORK
HANDLEBAR CATCH
HANDLEBAR STEM
HANDLEBAR CATCH NIPPLE
GRIP
BRAKE LEVER
HINGE CLAMP
CABLES
HANDLEBAR
FOLDING
PEDAL
MAINFRAME HINGE
MAINFRAME
CONTENTS
INTRODUCTION 4
SAFETY 5
UNFOLDING 6
FOLDING 10
USING THE BROMPTON 13
GEARS 14
BRAKES 20
LIGHTING 20
LUGGAGE 21
CLEANING & LUBRICATION 23
ADJUSTING THE SADDLE POSITION 24
SADDLE HEIGHT INSERT FITTING 25
BRAKE LEVER ADJUSTMENT 28
REAR WHEEL REMOVAL AND FITTING 30
ROUTINE REPLACEMENTS 31
WARRANTY 33
OTHER LANGUAGES
FRENCH 35
ITALIAN 69
SPANISH 103
PORTUGESE 137
GERMAN 171
DUTCH 205
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4
INTRODUCTION
Before using your Brompton, please read this manual noting the
sections on safety and folding in particular. While this manual is
intended as a guide, it is not a comprehensive guide to cycling
or bicycle maintenance.
To activate your 7 year extended warranty you must register your bike in the My Brompton section of our
website to record the details of your bike(s); that way, if your bike is stolen or we have any need to contact
you, we will have a record to refer to. You will be asked to enter your serial and frame numbers: the serial
number is located on a plate at the back of the main frame; the frame number is stamped on the main frame
near the bottom bracket. The information remains on the Brompton database and will not be passed on to
third parties https://www.brompton.com
If you carry out any adjustments or maintenance work yourself, please read the relevant sections of this man-
ual first, as it’s quite easy to get things wrong, and to impair the folding process or damage your bike. This
manual contains some tips and advice for using your Brompton but if you are ever unsure of how to maintain
your bike, visit an authorised Brompton dealer for expert advice. For a list of dealers, please visit our website:
https://www.brompton.com/Find-a-Store
We recommend having your bike inspected and serviced by a Brompton dealer regularly.
This manual conforms to ISO 4210-2
CARRYING & WHEELING THE FOLDED BIKE
• Owners are responsible for assessing the way they use the bike at all times, and should ensure that
they take due care of their safety and welfare when riding, moving or carrying their bike
• Brompton accept no responsibility for any injury caused when lifting and handling a folded bike
• A Brompton bike weighs between 9 and 14kg, depending on the equipment fitted
• Luggage fitted to the front carrier block can also weigh up to 10kg
• Owners must take due consideration of the weight of their bike and any luggage they plan to lift or
carry, and balance this against their particular physical capabilities; the circumstances i.e. route,
under-foot conditions etc, must also be considered before each lift and/or carry of the bike and
luggage
• Owners should always remove luggage from their folded bike so they do not attempt to lift or carry
the combined weight of the bike and luggage
• Whenever you are no longer able to ride your Brompton, inside a train station for example, you should
first push it as far as possible, then fold it up and roll it on the rear rollers before carrying it for the
shortest distance
• It is recommended that the folded bike is carried one-handed, most comfortably with your arm
straight and the bike to your side. The bike should be held either by the saddle, or the main frame
below the saddle, whichever is most suitable for you
• If you have to carry the bike for any distance, then it may be appropriate to swap the bike between
each hand at suitable intervals, depending on your capabilities
• Carrying the folded bike two-handed is only advisable over a very short distance, as it can only be
done by holding the bike at chest/stomach level in order to avoid knocking your legs or knees against
the bike; this requires both arms to be bent with an approx 90degree bend, which will place extra
strain on your arms
The small rollers fitted as standard on a Brompton are useful for pushing the folded bike into tight spaces.
Using the raised handlebar as a handle, the folded bike may also be pulled around on these rollers, though
this only works over short distances on a smooth surface. Remember to raise the seatpost slightly from the
fully-down position so that it does not hinder the bike from rolling along, but not so high that the bike unfolds.
The folded bike is not designed to be used as a stool, do not sit on the bike when folded.
SAFETY
The Brompton is designed for use on roads and well-made paths, carrying a maximum load not exceeding
110kg (rider and luggage weight included). A Brompton is not intended for stunts, cross-country riding or
extreme sports. Your Brompton should be used for its intended purpose. Misuse may lead to failure of some
components and void your Brompton warranty. We do not recommend fitting a child seat or trailer to the
Brompton, doing so will invalidate the Brompton warranty.
Before riding your Brompton for the first time, and periodically thereafter, please pay close attention to the
following:
• We recommend the use of an approved cycling helmet, even in countries where
their use is not mandatory
• Read and follow the national legal requirements of the country where
you are riding, and comply with all applicable traffic laws
• Make sure the wheel rims are clean and undamaged along the braking
surface, and check for excess rim wear. If you doubt the safety of your
rims, have them inspected by an authorised Brompton dealer
• Check brakes, tyres and steering regularly
• Keep brakes and gears properly adjusted and operating cables in good condition
• In rain, the brakes may be less effective and roads more slippery so brake sooner
• Check that all wheel nuts are properly tightened (see torque table, page 13)
• In the UK, the left hand brake lever operates the rear brake and the right hand
lever operates the front brake, but this varies from country to country
• When riding in the dark, wear reflective clothing and use lights (front and rear);
check to ensure that your lights comply with local laws
Before or after each ride, pay close attention to the following:
• Ensure that the quick release seatpost clamp is secured and the saddle is at the
correct height
• The hinge clamps are in place, with levers firmly tightened
• During folding and unfolding, as well as during use and maintenance, avoid putting your hands or
fingers anywhere they may be caught or trapped
• Ensure the bike is correctly folded or unfolded to avoid possible injury
• On an S Type, do not use the T Bag, C Bag or Folding Basket (which may interfere
with steering)
• On a P Type, remember you have no brakes to hand when using the lower grips
• Never try to alter the height of the handlebar stem where it enters the front forks
WARNING
Many components on a bike are highly stressed, and with high mileage, heavy loads or hard riding, will even-
tually reach the end of their design life; in particular, aluminium alloy has a limited fatigue life. Failure in use
can cause injury. You should check all load-bearing parts for any signs of damage, corrosion, or cracking,
and replace if necessary. Please visit an authorised Brompton dealer for expert advice if you are uncertain.
The bike must not be subject to any modification, repair or replacement other than as authorised by Bromp-
ton Bicycle Ltd. The bike must be serviced by an authorised Brompton Dealer.
If the bike has been subject to a crash or impact you should stop using the bike immediately and have the
bike inspected by a Brompton dealer. Damaged components should be replaced before the bike is ridden
again. Any deep scratches or gouges in the aluminium parts can severely weaken the component and cause
premature failure of the part.
Note: We recommend that genuine Brompton parts are used for safety-critical components.
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6
• To release the handlebar, firmly push down on the end of the grip nearest you
with the flat of your left hand
UNFOLDING THE BIKE
Take some time to look at the bike folded; it helps when you come to fold it again.
Stand on the left (non-driveside) of the bike. Unfold the left-hand pedal by pulling the
toothed metal cage towards you. As you do this note how the black catch operates
as this will help you when folding.
• Swing the handlebar up until the hinge closes, align the clamp plate with
the hinge and tighten the black clamp lever tightly
7
• Undo the seat clamp lever, pull the seatpost up and re-clamp
• Place your right hand on the saddle & hold the handlebar stem with your left
hand, near the hinge
• Look down where the chain runs between the two wheels and you will see the
black hook holding the front wheel to the rest of the bike
• Lift the handlebar stem with your left hand, to lift the hook above the tube it is
resting on
• Swing your left hand away from you in an
arc to push the fork and front wheel away
from you, push until the hinge on the main
frame is closed
• When doing this do not twist your wrist;
make sure to keep the front wheel pointing
in the same direction, the hook must
remain on your side of the bike and the
front wheel pointing forward at a slight
angle, (not parallel with the rear wheel)
The bike is now in its “parked” position – it will stand by itself.
• The hinge on the main frame should now be closed
• Align the hinge clamp plate and tighten the
black clamp lever firmly
8
The bike is now unfolded and ready to ride 9
• To complete the unfold, hold the handlebar with your
left hand, with your right hand lift the bike up swiftly by the
saddle and swing the rear wheel will backwards and into
position • Push down on the saddle to ensure
the suspension block pushes against
the mainframe; there should be a loud
click as it locks into place
• Turn the handlebar slightly to the left so it is not parallel with the rear wheel &
spin the cranks so the right-hand pedal is pointing backwards
FOLDING THE BIKE
• There is a small black lever behind and below the seat clamp. Press it forward,
then lift the back of the bike swiftly so the rear wheel swings under the frame,
then lower the bike so it sits in the ‘parked’ position
• Undo the hinge clamp lever on
the mainframe by 4-6 turns
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