Huka Duet Junior User manual

user manual
Duet junior
version 2012.1

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Warranty
Pg. 5
General Characteristics
Pg. 6 –7
User Assembly
Pg. 8 –13
Use of the product
Pg. 14 –21
Maintenance
Pg. 22 - 24
Malfunctions
Pg. 25
Technical specifications
Pg. 26

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INDEX
1. WARRANTY........................................................................................................ 7
2. GENERAL CHARACTERISTICS............................................................................ 8
2.1. User manual ........................................................................................................... 8
2.2. Huka BV ................................................................................................................. 8
2.3. Duet Junior............................................................................................................. 8
2.4. Intended user ......................................................................................................... 9
2.5. Intended environment ............................................................................................. 9
2.6. Tyre pressure ......................................................................................................... 9
3. USER ASSEMBLY.............................................................................................. 10
3.1. Introduction.......................................................................................................... 10
3.2. Saddle adjustment ................................................................................................ 10
3.3. Passenger seat adjustment .................................................................................... 10
Headrest adjustment ................................................................................................ 11
3.4. Steering height ..................................................................................................... 12
Seat belt adjustment ................................................................................................ 12
3.5. Wheels ................................................................................................................. 13
Tyre pressure and valves .......................................................................................... 13
Spokes .................................................................................................................... 13
Hub gears................................................................................................................ 14
Chain and pedals...................................................................................................... 14
Required tools and equipment................................................................................... 14
3.6. Inspection for missing or damaged parts ................................................................ 14
3.7. Assembling, installing and removing instructions..................................................... 14
3.8. Storage, shipment and travel ................................................................................. 15
4. USE OF THE PRODUCT ..................................................................................... 16
4.1. Safety and driving precautions ............................................................................... 16
4.2. Theft prevention ................................................................................................... 16
4.3. General advises and warnings................................................................................ 17
4.4. Use in combination with other products.................................................................. 17
4.5. Hot and cold surfaces............................................................................................ 17
4.6. Danger of pinching................................................................................................ 18
4.7. Use on slopes ....................................................................................................... 18
4.8. How to use the Duet ............................................................................................. 18
4.9. Where to use the Duet .......................................................................................... 19
4.10. How to connect or disconnect the wheelchair to the cycle ..................................... 19
4.11. Adjustment of the wheelchairs seat ...................................................................... 19
4.12. Closing the wheelchair positioning belt ................................................................. 19
4.13. Brakes ................................................................................................................ 19
Driving Brakes.......................................................................................................... 19
Parking brake........................................................................................................... 20
4.14. Lights ................................................................................................................. 20
4.15. Luggage carrier................................................................................................... 21

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4.16. Bike stand .......................................................................................................... 21
4.17. Use of the gears (optional) .................................................................................. 21
4.18. Known misuse..................................................................................................... 21
4.19. Transfer to and from the wheelchair..................................................................... 21
4.20. Driving ............................................................................................................... 21
4.21. Accelerating, braking and steering........................................................................ 22
4.22. Pushing .............................................................................................................. 22
4.23. Transportation .................................................................................................... 23
Lifting...................................................................................................................... 23
Transport by car....................................................................................................... 23
Partial disassembly ................................................................................................... 23
5. MAINTENANCE ................................................................................................ 24
5.1. Maintenance, service and fault finding to be carried out by the user ........................ 24
Tyres....................................................................................................................... 24
Puncture repair ........................................................................................................ 24
Protection against corrosion ...................................................................................... 25
Brakes and gears ..................................................................................................... 25
5.2. Required tooling and equipment ............................................................................ 25
5.3. Ordering for parts to be readily replaced ................................................................ 25
5.4. Cleaning ............................................................................................................... 25
5.5. Frequency of maintenance..................................................................................... 25
5.6. Performance checks .............................................................................................. 26
5.7. Other repairs and maintenance .............................................................................. 26
Authorized dealers for repairs ................................................................................... 26
Spare parts .............................................................................................................. 26
Unauthorized repairs ................................................................................................ 26
5.8. Disposal of the product ......................................................................................... 26
6. MALFUNCTIONS .............................................................................................. 27
6.1. Mechanical malfunctions........................................................................................ 27
7. TECHNICAL SPECIFICATIONS ......................................................................... 28
7.1. Certification .......................................................................................................... 28
7.2. Expected life time of the Duet................................................................................ 28
7.3. Specification sheet ................................................................................................ 28

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1. WARRANTY
Huka BV gives two years of guarantee on the Duet Junior. Your supplier will carry out this
guarantee.
The guarantee does not apply to damage or faults of the product caused by wrong or
improper use, or neglected maintenance. The evaluation of it is the privilege of Huka BV or a
representative to be appointed by Huka BV.
This guarantee does not apply to components susceptible to wear such as tyres, seat covers,
arm rests, brake cables etc..
Huka BV reserves the right to alter the specifications at any time. No responsibility can be
accepted for any change in the specifications. Change of specifications can be caused by e.g.
availability of parts, product improvement based on market experience, changed legislations
etc..

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2. GENERAL CHARACTERISTICS
2.1. User manual
The user manual is written for the user of the Duet Junior. These are not only the children
who will use it as a passenger, but also the driver of the Duet Junior and any other persons
who are involved with it on a regular basis like parents and therapists.
The manual contains all the relevant information needed to adjust and adapt Duet Junior to
the users requirements and how to make the best use of the various functions.
NOTE:
2.2. Huka BV
Huka is a Dutch brand that is specialised in the development and production of aids for the
handicapped, mainly children.
Huka BV, producer of the Duet Junior, works closely with various companies and
rehabilitation centres in order to improve the products constantly.
The address of Huka BV is:
Huka BV
Munsterstraat 13
7575 ED Oldenzaal
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
2.3. Duet Junior
The Duet is a combination of an individually adaptable wheelchair and a bike with multiple
gears. The front part of the cycle consists of a manual wheelchair that can be connected and
disconnected to the cycle mainframe. When connected, the wheelchair is the front part and
steering part of the cycle. When disconnected, the wheelchair can be used as a genuine
manual wheelchair.
With the aid of this manual, with its clear drawings and practical instructions, you will be
able to get even more enjoyment from your Duet II Junior. It is important that you take
the time to read it carefully and then tot keep it within arm’s reach for use in the future.
In the first instance, please approach your dealer if you have any questions and/or
complaints.
When you pick up your Duet II Junior, all the components described in this manual will
have been properly adjusted in accordance with your requirements. Any components to
be delivered separately will also have been fitted by your dealer.
Some components must be adjusted again after a time. It is best to have this carried out
by your dealer. We also advise when you want to make adjustments yourself, you
always consult your dealer before doing so. He is not only the supplier of your bicycle,
but also a specialist who can advise you on such matters.
Check whether there are any tips and/or recommendations before you start work on
your bicycle. These manufacturer’s tips and recommendations must always be followed.
These tips and recommendations will increase your safety and improve the cycling
comfort of your Duet II Junior.

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2.4. Intended user
The Duet is meant to provide cycling mobility to children that are not able to walk or use a
bicycle themselves, but are very well able to sit in a wheelchair. The driver of the Duet can be
any person that is capable of driving a bicycle and that is able to take full responsibility for
the wheelchair passenger.
The wheelchair is specially meant for children with a maximum weight of 50 kg’s.
The Duet is meant for drivers with a maximum weight of 120 kg's. A maximum of 25 kg’s
may be carried on the luggage carrier. The total allowed driving weight
(cycle+driver+passenger+luggage) is therefore 255 kg’s.
2.5. Intended environment
The Duet is meant for use outside. There are not many environmental restrictions. After
being exposed to moist conditions it is advised to dry the Duet, and especially the seat shells
and cushions with a soft dry cloth.
WARNING:
NOTE:
2.6. Tire pressure
In order to prevent tyre damage and to preserve the performance of the wheelchair, the tyre
pressure must be checked at least on a monthly basis. The recommended tyre pressure is
written on the tyres. Tyres at the right pressure means: lighter cycling, less wear and faster
and better braking. In case this can not be read clearly because of tyre wear, please use
following pressures.
Min. Max.
front tires: 3 Bar/45 PSI 5 Bar/70 PSI
rear tire: 3 Bar/45 PSI 5 Bar/70 PSI
WARNING:
It is allowed to use the wheelchair in rain or direct sun. It however must be noticed, that
metal or plastic surfaces of the wheelchair can become very hot when exposed to direct
sun for longer time.
It is allowed to use the wheelchair in rain or direct sun. It however must be noticed,
that metal or plastic surfaces of the wheelchair can become very hot when exposed
to direct sun for longer time.
Because of the harmful combination of salt water and sand it is advised not to use
the wheelchair on beaches. We advise to clean the wheelchair after having been in
contact with sand and/or salt water as described in the paragraph “cleaning”.
When the Duet is parked outside, the wheelchair seat must be protected from
weather influences such as rain by using a cover.
Never drive the Duet with too low tire pressure as this will damage the tire (dangerous
situations), will cause high rolling resistance and will cause higher wear.

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3. USER ASSEMBLY
3.1. Introduction
The Duet Junior is ready to use when delivered to the customer. Based upon detailed
specification and eventual try out with the user, we build the product specific to the users
requirements as much as possible.
However it is always possible that the supplier e.g. the dealer has to adjust certain issues of
the cycle at the moment of delivery. These possible adjustments are described in this
chapter.
3.2. Saddle adjustment
1. The saddle height is adjusted by placing the saddle pin higher or lower. The height of the
seat must be adjusted to the driver’s length. Loosen the strap slightly and adjust the
saddle height so that the drivers legs are very slightly bend when the pedal is in the
lowest position and the heel of the foot is placed on the pedal. Re-tighten the strap when
the right height is obtained.
WARNING:
2. The angle of the saddle can be adjusted by loosening the saddle bolt under the saddle.
Adjust the angle so that a comfortable and stable body position is obtained without
unwanted pressure on specific body parts such as genitals.
3. By loosening this saddle bolt, you can also tilt the saddle as well as adjusting it forwards
as backwards. Moving the saddle forwards gives you a ‘sporty position’, while moving the
saddle backwards ensures a more ‘relaxed position’.
4. After having adjusted everything, tighten all the nuts and bolts again.
5. Check whether the nuts and bolts are tight regularly between trips.
NOTE:
3.3. Passenger seat adjustment
The seat of the passenger should be adjusted very carefully. The right seat adjustment is
very much depending on the abilities and size of the user. The adjustment of footplate
height, lower-leg angle, back-rest angle and arm-rest angle are very much correlated and it is
advised to be set by a therefore trained person.
The footplate height is adjusted by loosening the straps.
The lower-leg angle can be set by loosening the knob on the knee joint of the foot support.
The back-rest angle can be set by loosening the two red coloured knobs between the seat
and back-rest.
The arm rest angle can be set by pulling out the knobs on the side of the arm-rest.
The maximum height marks with warning text may never be visible after the
adjustment. This means that the saddle pin is inserted far enough into the seat tube
(minimum of 6 cm).
The stem of the saddle may be inserted in the frame tube to the point where the stem
becomes smaller in diameter. This is the minimal saddle height. Placing the saddle in a
lower position will result in a saddle stem that cannot be tightened properly.
Adjust the saddle so that it is horizontal.
When you park your bicycle make sure that the saddle is not up against a rough wall
or it will become damaged.
If it rains the saddle surface may run slightly. A separate saddle cover is easy to
carry with you and provides good protection from the rain when the bicycle is
parked.
Be careful when dismounting from your bicycle! The back of your coat can get
caught behind the saddle and cause an accident.