Aosom 440-025 Installation guide

ASSEMBLY & INSTRUCTION MANUAL
IMPORTANT, RETAIN FOR FUTURE REFERENCE: READ CAREFULLY
US_CA
440-025
IN221002129V01_US
OR

1
Subject P
Use and installation 2-4
Technical drawing 5
Assembling the frame and seat 6
(dis)assembling of the cover 7
Position of the child(ren) in the trailer 7
(dis)assembling the wheels 9
Installation of the safety flag 9
(dis)assembling the fixation arm 10
Installation of the push bar 10
(dis)assembling the connector 11
Attaching and removing jogger/stroller 11
Using the stamp brakes 12
Disassembling and storage 13
Maintenance 13
Read this manual and check the contents of the packaging thoroughly before
using the product.
Important - Save these instructions for future reference.
USE AND INSTALLATION
Remark: Your new trailer has been developed and produced to offer you a
durable and confortable solution during your bicycle adventures.
Read this manual thoroughly and don't throw it away in case you might
need it later. Not following these guidelines may result in dangerous
situations for you and your child.
Failure to comply with the manufacturer's instructions can lead to serious injury
or death of the passenger/rider.
IMPORTANT
THE DRIVER AND PASSANGER ARE REQUIRED TO WEAR AN APPROVED
BICYCLE HELMET WHILE USING THE TRAILER!
General characteristics of your trailer
• Quick and simple (dis)assembly and storage.
• Fits two children side by side.
• 5-pont safety harness with quick release. 
• Adjustable hood with retractable window.
• Easily install the wheels.
A recommendation to the user that the bicycle to which the trailer will be attached
undergo a safety check by a qualified
bicycle mechanic before attaching the trailer to it！

2
WARNING :
• This trailer is not suitable for children younger than 18 months old
Never transport more than two children with the trailer.
• Children need to be able to sit up straight for a long time and able to
wear a helmet before using the trailer. 
Maximun weight for passengers: 2*18/36kg.
Maximun loading weight for the basket is 2.5kgs.
Maximum total weight: 60kg (including the trailer) .
Do not use with children who exceed the weight limitations !
Each child should be no taller than 110CM and weigh no more than 18KG.
T h a t t h e c a rr i ag e o r s t r ol l er w i ll b e c om e u n s ta b le i f t h e
manufacturer's recommended
load is exceeded;
That the carriage or stroller will become unstable if a parcel bag or
parcel rack is used
when there is no provision for one.
It is forbidden to jump, wobble or play in the trailer.
• Make sure the children are not exposed to high temperatures while
seated in the trailer.
• Do not use the trailer while high winds or heavy rain. 
• Thistrailer is not suitable for transporting animals.
• Use bicycles with 22” 26” wheels capable of pulling a 60 kg trailer. -
Contact your manual or bicycle retailer for more information.
• Never attach the trailer to motorised vehicles!
• To pr e ve n t in ju r i e s , k e e p ch il d r e n a t a s a f e di st a n c e wh i l e
(dis)assembling the trailer.
• This trailer is not a toy!
WARNING: That the child is never to be left in the carriage or stroller
unattended;
WARNING: That the child restraint system that is supplied with the carriage or
stroller is to beused;
WARNING: That if a parcel bag other than one recommended by the
manufacturer is used, thecarriage or stroller may become
unstable.
Do not install inside the trailer a car seat or any other seating device not approved
by the manufacturer.
Do not allow any of the child's body, clothing, shoe laces, or toys to come in contact
with moving parts.
Red reflector(s) shall be visible on the rear of the trailer.
Safety warnings before use
• Always wear adapted clothing when using the trailer in very hot/cold
periods.
• Make sure the fixation arms is properly attached.
• Make sure the safety harness is closed correctly.
• WARNING: Make sure all fixations are thoroughly checked before
using the trailer.
Guidelines
• Attach the belts and make sure the safety harness is sealed correctly.
• Check whether all bike and trailer parts are functioning properly before
each ride.

3
• Passengers and drivers should always wear a helmet.
• Check your tire pressure before each ride.
• Adapt your speed when the trailer is attached.
• With the trailer attached your stopping distance is bigger and braking
will take longer. To avoid accidents start braking sooner and slow down
before turns.
• Don't use accessories not approved by the manufacturer.
• Do not use accessories not approved by the manufacturer.
• Only spare parts supplied or recommended by the manufacturer /
distributor must be used.
ATTENTION
Any additional load placed on the steering and / or push and / or seat back
and / or sides of the product whether stroller mode or trailer affects the
stability of the product.
APPLICABLE STANDARTS ASTM:F833 & ASTM F1975-15：Meets:
SAFETY INFORMATION
Do not modify any parts of the trailer and do not use it if any parts are missing,
modified or damaged. Contact your retailer for replacement parts.
SAFETYWARNINGS DURING USE
• Check the trailer before and after each ride.
• Take good care of the trailer.
• Make sure the wheels are properly installed as mentioned in the
chapter below. Make sure the tire pressure is correct (see side of the
tires) before each use. Incorrect tire pressure might result in accidents.
• Attach the arms to the frame of the bike. The connector should be
under pressure, the safety belt underneath the rear base and the hook
connected to ring “D”  The driver should be at least 16 years old and in
good shape.
• Make sure your bike is in good condition and your brakes are working
properly. We advise you to assemble a rear view mirror to your bike.
Always turn on your head and taillights.
• Maximum load is 60 kg (Trailer+ passengers+ loading).
• IMPORTANT: Make sure the children don't move around in the
trailer. Any movements may cause the trailer to flip over.Bar of the
trailer shall carry no extra weight.
• Do not place any other children's seats in the trailer. Using other seats
cause the trailers warranty to expire and may cause injuries or damage
to the passengers and the trailer.
• Attaching the trailer alters the feel of the bike. Especially balance and
brake power are influenced.
• In case of an emergency, flat tire or other problems it is advised to push
the trailer to the side of the road before repairing it.
SAFETYWARNINGS FOR THE RIDER
• Avoid dangerous and busy intersections and streets. If available,
always ride in the bicycle lane.
• Avoid riding after sunset; otherwise make sure to use appropriate
clothing and lighting. Do not transport children at night.
• Avoid sharp turns since these may cause the trailer to flip over.
• Avoid high speeds and dangerous descends.

4
• Avoid going faster than 16 km/h, this may affect the stability of the bike
and trailer.
• Avoid potholes, mud and puddles.
• Do not use the trailer while high winds or heavy rain.
SAFETYWARNINGS FOR THE PASSENGERS
Make sure the children remain seated and the safety harness is properly
closed. When the child is seated its head should not be higher than the
horizontal beam. Make sure you securely tighten the belts and straps. Check
the manual for more information.
Make sure the children cannot touch the wheels and the road, that they remain
seated. If they do not remain seated it is possible that the trailer flips over with
severe injuries as a consequence.
Technical drawing

5
NO DESCRIPTION QT’Y NO DESCRIPTION QT’Y
1 Base Frame 1 8.2 Front White Reflector 2
1.1 Frame Joint 4 9 Front Wheel Kit 1
2 Side Frame 2 9.1 Fork Ass’y 1
3 Cross Bar 1 9.11 Wheel Bracket Knob 1
3.1 Cross Bar Plug 1 9.12 Front w heel axle 1
3.2 Crossbar Safety Pin 1 *10. Handle/Brake Kit 1
4 Hitch Arm Kit 1 *10.1 Push Bar Ass’y 1
4.1 Hitch Connector Ass’y 1 *10.11 Push Bar 1
4.11 Hitch Connector 1 *10.12 Push Bar Bracket 2
4.12 Hitch Connector Pin 1 *10.13 Push Bar Plug 2
4.13 Safety Strap 1 *10.14 Push BarSpring Button 2
5 Rear Wheel Kit 1 *10.15 Wrist Tether Strap 1
5.1 Wheel Axle 1 *10.2 Stamp Brake Ass’y 2
5.2 Rear Wheel Ass’y 2 *10.21 Brake Bar 1
5.21 Tire 20” 2 *10.22 Brake Clip 1
5.22 Tube 20” 2 *10.23 Cable Tension Nut 2
5.23 Wheel Shaft 2 *10.24 Brake Cable 2
5.24 Wheel Lock Button 2 *10.25 Brake Stopper 2
5.25 Spoke Reflector 4 JOGGER KITS
6 Deck/Seat Fabric 1 11.1 Wheel Bracket Knob 1
6.1 Shoulder strap 4 11.2 12” Fork 1
6.2 Crotch strap 3 11.3 Plastic slot 2
7 Side Panel Fabric 2 11.4 12” w heel 1
7.1 Flag 1 11.5 Quick release 1
List of components

6
ASSEMBLY AND DISASSEMBLY OF THE FRAME & SEAT
Remove trailer and all components from carton and sort all contents. Unfold
side panels of trailer tothe upright position.
Swing the crossbar upward into position across the top between the side panels and
route it through the loops at the top of seat. Insert the crossbar into the upper sleeve
and lock with the safety pin.
To use the pin and spring clip fasteners, insert the pin at attachment point until it
pushes through the opposite hole. Rotate the spring clip up and over until it snaps
into place over the pin head. To unlock, reverse order.
To disassemble follow the instructions in the reverse order.

7
CAUTION!
The vehicle is not suitable for children 12 months or younger.
Ensure that the safety pin is secured with the spring clip.
Ensure that all the locking devices are engaged before use.
WARNINGS!
Immediately discard all plastic bags and plastic wrapping materials.To
prevent injury, please use extreme care when folding and unfolding the
trailer/jogger/stroller.
ATTACHING AND REMOVING THE TOP COVER
Position the top cover over top of the trailer so that the roll-up window with bug
mesh screen is to the front of trailer. Feed the cover over the push-bar post holes
so they protrude through. Fasten the rear of cover with Zipper/Velcro strap and the
bottom corners of the cover with Velcro and stretch it until it is fully covering the
trailer.
Reverse the instructions to remove the top cover.
The top cover is designed to keep passengers and cargo dry and warm in inclement
weather and protects from flying debris. The rain PVC cover can be rolled up to
allow for added ventilation in hot weather or rolled down to allow for added warm
protection in the cold weather. Velcro closures keep the rain cover out of the way
when rolled up.
WARNINGS!
Passengers can become hot inside fully closed trailer during very hot
weather or when parked. Please make sure to open roll up top cover vents to
prevent overheating.
Position of the child(ren) in the trailer
When you place the children in the seat or remove the children from the seat,
always check that the trailer is securely connected with the bike and the bike is
properly parked. Always put on all brakes when loading or unloading.
Open the front of top cover and place the children in the proper position and close
the top cover. Make sure to use the seat belts and shoulder straps and wear
helmets.

8
The harness system is designed to keep your passengers immobilized and secure
during transport. The harness is designed to accommodate one or two children.
nDisconnect shoulder strap clips from crotch strap D-ring.
nPlace child in seat. If carrying a single passenger, place child in the middle of
the trailer seat.
nPut one strap over each shoulder and connect to the D-ring of the crotch strap.
nAdjust shoulder crotch straps to be snug and secure.
nFasten lap belt and tighten securely.
Never ride without securing passengers in the Five Point Harness. Unrestrained
passengers can affect bike handling; and they may be more likely to be injured in
the event of an accident.
When one child is riding, seat him/her in the center. Do not carry extra
children or belongings on the trailer.
Open the rear of top cover and fix the parcels in the storage
compartment and close the top cover.
This section applies to two-occupant trailers that provide a center seating
position—When used with only one occupant, the
occupant should be seated in a center seating position.
CAUTION!
There should be a minimum distance of 2” (50mm) between the top of the
child's head (without a helmet on) and the roof of cabin. If the child's head
protrudes above the upper crossbeam when seated, they are too tall to ride
safely in the trailer. Each child must wear an ANSI or CPSC approved bicycle
helmet when riding in this product.
WARNINGS!
Avoid serious injury from falling or sliding out. Children should always wear
the harness and shoulder straps. Always adjust the harness to a snug and
secure position for the child to prevent slipping into the leg openings and
risking strangulation. Always check the child's position and safety strap
security. Never operate without securing passengers in the 5-point harness.
Unrestrained passengers can affect bike handling; and they may be more
likely to be injured in the event of an accident.

9
WARNINGS!
For easy towing and safe handling, check tires often for proper inflation and
wear. Check tire pressure regularly.Always maintain the tires within
pressure range indicated on tire sidewall.
WARNINGS!
Never use the vehicle at night without adequate lighting and reflectors, obey
all lo cal l aws f or li ght ing a nd re flec tors in ac cor da nce wi th CP SC
requirements. In order to meet CPSC Safety Standards, a reflector must be in
place on the tear of the trailer.
INSERTING AND REMOVING THE FLAG
Assemble the two sections of the flag pole together. Insert the flagpole into the
sewn sleeveon the left rear corner of the trailer.

10
CAUTION!
Always use the safety flag to maximize your visibility to other vehicles
sharing the road or path.
(dis)assembling the fixation arm
Tip the trailer back on its frame so the underside is fully visible. Remove the safety
pin, rotate the hitch arm upward until fully extended. Reinsert the safety pin and
lock the spring clip.
For folding and storage, reverse the process and be sure to fasten the hitch arm
fully.
To disassemble follow the instructions in the reverse order.
CAUTION!
Do not use the trailer without proper installation of the safety pin.
Installation of the pusher bar
Take the pusher bar and engage in the slots provided for this purpose：
Check that the two snaps are fully engaged!

11
(dis)assembling the connector
Install steel connector onto bike axle. Insert safety pin and pass safety strap
though chain stay pipe of bike.
CAUTION!
The height of the hitch clamp shall not exceed 15.5” (400 mm) above a road
surface and the standard drawbar load shall be between 30N and 80N. The
hitch arm must not bear any extra load.
WARNINGS!
Ensure the safety pin is secured with the spring clip. Please ensure
your bike is completely compatible with the trailer. The safety strap
must be in place before use.
If the hitch arm interferes with your bike or other bike attachments, or
if it does not tighten securely, do not use. Contact your bike dealer for
help with proper installation.
ATTACHING AND REMOVING THE JOGGER/STROLLER KIT
The jogger/stroller conversion kit consists of a push bar and front wheel
assembly that attach on the trailer to convert it for walking use.
Install the push bar by inserting ends into frame and pushing down until
locking devices snap into place. Insert the front wheel assembly into the
bracket and firmly tighten the knob.
To convert back to use as a trailer, loosen wheel bracket knob and remove the
wheel.

12
AS STROLLER:
AS JOGGER:
To disassemble follow the instructions in the reverse order.
WARNINGS!
The trailer/jogger/stroller is not suitable for running or skating. Any load
attached to push bar affects the stability of the vehicle. Before using as a
trailer, the wheel assembly should be removed.
USING THE STAMP BRAKES
The jogger/stroller is equipped with a hand brake to slow down the speed and
to park the vehicle.
The push bar is equipped with a locking clip for enhanced parking
performance. Pull back and engage the stamp brakes and clip the hook onto
brake bar to lock the stamp brakes in place.
Gently push on the vehicle to ensure the parking devices are engaged before
loading or unloading passenger or cargo.
The brake cables may have weak tension and the brake can not properly work. It
should need a fine-tuning on the tension nuts. The cable tension can be tuned via
the red tension nuts. Adjust the opposite tension nuts by turning down to proper
position and then turning up the upper nut to fix the red nut. When completed, test
the stamp brakes to ensure it work properly before using.
Brake clip
Brake adjusting
screw

13
WARNINGS!
The parking performance will be affected by low tire pressure and weak cable
tension. Always check the tire pressure regularly and inflate to the range
indicated on the tire sidewall for proper parking performance. Always check
and adjust the tension of brake cables for proper braking performance.
All parking devices shall be engaged during loading and unloading of
passengers or belongings. Be sure that all parking devices work properly.
Always use the wrist strap when pushing the vehicle to prevent it from rolling
away from you. Be sure that the parking devices are released before walking
or pulling.
It may be dangerous to leave the children unattended in or around the vehicle.
DISASSEMBLY , FOLDING AND STORAGE
For partial or complete disassembly, folding and storage, reverse the above-
mentioned process and be sure to insert the safety pins fully and lock it with the
spring clips. Inspect the trailer and its parts before and after each use and storage.
Check the working conditions of both trailer and bike before each use.
Store trailer in a dry area under ambient conditions and always make sure trailer is
dry before storing.
CAUTION!
To prevent color fading and eventual weakening of the fabricsor components,
store the trailer out of direct sunlight.
MAINTENANCE
From time to time, check your trailer for loose hardware, worn parts, torn
material or stitching. Repair or replace parts as needed. Over or under
inflation of tires may cause handling issues for the trailer. Replace tires only
with street tread and not with BMX or knobby tread.
We suggest to periodically clean all parts wipe dry and then let air dry,
especially if you are exposed to salt water, salt spray, beach sand etc.
CAUTION!
Do not make any modifications to the trailer/jogger/stroller. Be sure that the
trailer and bike are in good working conditions. A bike dealer can help you
with inspection and maintenance.
WARNINGS!
Do not use cleaning solvents. Clean only with mild soap and water.
SERVICE AND REPAIR
Service and repair can be performed by any bike ship.
Imported by : Aosom LLC
ADD: 27150 SW Kinsman Rd Wilsonville, OR 97070 USA