ProActiv LITTY 4you Troubleshooting guide

Operating instructions LITTY 4you
MOBILITY MADE SIMPLE!
Operating instructions
Service booklet
LITTY 4you
Operating instructions LITTY 4you
Operating instructions
Service booklet
LITTY 4you
0
Operating instructions
Service booklet

1
Contents
1 Preface ................................
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2 Legend ................................
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3
CE Declaration of Conformity / other information
3.1 Classification
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3.2
Declaration of Conformity
3.3 Manufacturer
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4 Scope of delivery
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5 Introduction
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6 Product description / purpose
7
Acceptable usage and operating conditions / places of use
8 Technical specifications
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8.1 Product weight
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8.2 Load weight
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8.3 Obstacle heigh
t and turning circle
8.4 Service life
................................
9 Commissioning
................................
10 Hand-over
................................
11 Safety instructions -
prior to driving / use
12 Safety instructions -
while driving / using
13
Safety instructions regarding obstacles
14
Safety instructions regarding dangerous locations and dangerous situations
15 Safety instructions -
after driving /
16
Individual setting options
16.1
Seat height front and back & angle of seat
16.2 Back shell position
................................
16.3 Adjusting seat width
................................
16.4 Adjusting the seat depth
16.5
Adjusting the lower leg length adjusting the footrest
16.6
Adjusting the tipping point
17 Drive wheels
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17.1
Removing and attaching the drive wheels
17.2
Checking and adjusting the wheel tracking of the drive wheel
17.3 Air pressure
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17.4 Other
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18 Caster wheels
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Operating instructions LITTY 4you
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CE Declaration of Conformity / other information
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Declaration of Conformity
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Acceptable usage and operating conditions / places of use
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t and turning circle
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prior to driving / use
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while driving / using
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Safety instructions regarding obstacles
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Safety instructions regarding dangerous locations and dangerous situations
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after driving /
use ................................
................................
Individual setting options
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Seat height front and back & angle of seat
................................
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................................
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................................................................
................................
Adjusting the lower leg length adjusting the footrest
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Adjusting the tipping point
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Removing and attaching the drive wheels
................................
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Checking and adjusting the wheel tracking of the drive wheel
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Operating instructions LITTY 4you
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Operating instructions LITTY 4you
18.1 Replacing
the caster wheels
18.2 Caster wheels flapping
................................
18.3
Replacing the caster wheel forks
19 Anti-tippers
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20 Brake
................................
21 Push handles
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21.1 Central single-
hand push handle
21.2
Push handles offset to the back
22 Storage ................................
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23 Transport
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24 Malfunctions
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25 Cleaning and care
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26 Maintenance
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26.1 General instructions
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26.2 Service schedules
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26.3 Proof of maintenance
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27 Disposal ................................
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28 Re-use ................................
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29 Warranty ................................
30 Liability ................................
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31
Appendix: Tightening torques and securing details
32
Appendix: Medical product passport / record of training
33 Appendix: Hand-
over certificate
33.1
Required compliance criteria to authorise use
33.2
Check list for training the user
34 Appendix: Inspection lists
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Operating instructions LITTY 4you
the caster wheels
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Replacing the caster wheel forks
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hand push handle
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Push handles offset to the back
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Appendix: Tightening torques and securing details
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Appendix: Medical product passport / record of training
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over certificate
................................................................
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Required compliance criteria to authorise use
................................
................................
Check list for training the user
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3
1 Preface
Dear Customer,
Congratulations on
purchasing your new PRO
ACTIV product. You have bought a quality
product which has been especially customised
to meet your requirements.
We have put together some instructions about
its proper and safe use in the following doc
ment. Please read these instr
uctions before
using the product.
These operating instructions refer to standard
components. If you have individual solutions or
non-
standard components on your wheelchair,
we at PRO ACTIV would be happy to deal with
any questions you may have about using
If you have any further questions about this or
any of our other products, we would be glad to
be at your disposal.
Enjoy your trips and the best possible mobility.
Your PRO ACTIV team
2 Legend
The symbols used in these operating instru
tions have the following meanings:
Manufacturer
Warnings, tips and safety instructions
Serial number
Additional information
Assembly instructions for the dealer (see
table of contents)
Additional information
Operating instructions LITTY 4you
purchasing your new PRO
ACTIV product. You have bought a quality
product which has been especially customised
We have put together some instructions about
its proper and safe use in the following doc
u-
uctions before
These operating instructions refer to standard
components. If you have individual solutions or
standard components on your wheelchair,
we at PRO ACTIV would be happy to deal with
any questions you may have about using
them.
If you have any further questions about this or
any of our other products, we would be glad to
Enjoy your trips and the best possible mobility.
The symbols used in these operating instru
c-
tions have the following meanings:
Warnings, tips and safety instructions
Assembly instructions for the dealer (see
3
CE Declaration of Conformity /
other information
3.1 Classification
The LITTY (referred to as a "product" below) is
classified as a class I product.
3.2
Declaration of Conformity
PRO ACTIV Reha-
Technik GmbH declares in
the context of an individual declaration of co
formity that the respective product has been
de
veloped and manufactured according to the
relevant provisions.
If the product is adapted in a manner which
has not been agreed by PRO ACTIV Reha
Technik GmbH, this declaration becomes void.
3.3 Manufacturer
PRO ACTIV Reha-
Technik GmbH
Im Hofstätt 11
D-
72359 Dotternhausen
Tel. [phone]-
0
Fax [phone]-
7025
E-
Mail: info@proactiv
Web: http://www.proactiv
4
Scope of delivery
The PRO ACTIV product is supplied as sta
dard with seat and back system, drive wheels,
caster wheels and footrests as well as
ing instructions, training record / handover
record and inspection lists
As per your order, the product is equipped with
additional recommended accessories, such as
push handles, anti-
tippers and waist belt.
Please check that the delivery is complete after
you have received your product.
The product is tested to ensure it is completely
functional prior to shipping. If your product has
been damaged during transit, ple
your dealer or PRO ACTIV immediately.
Operating instructions LITTY 4you
CE Declaration of Conformity /
other information
The LITTY (referred to as a "product" below) is
classified as a class I product.
Declaration of Conformity
Technik GmbH declares in
the context of an individual declaration of co
n-
formity that the respective product has been
veloped and manufactured according to the
If the product is adapted in a manner which
has not been agreed by PRO ACTIV Reha
-
Technik GmbH, this declaration becomes void.
Technik GmbH
72359 Dotternhausen
0
7025
Mail: info@proactiv
-gmbh.de
Web: http://www.proactiv
-gmbh.com
Scope of delivery
The PRO ACTIV product is supplied as sta
n-
dard with seat and back system, drive wheels,
caster wheels and footrests as well as
operat-
ing instructions, training record / handover
record and inspection lists
.
As per your order, the product is equipped with
additional recommended accessories, such as
tippers and waist belt.
Please check that the delivery is complete after
you have received your product.
The product is tested to ensure it is completely
functional prior to shipping. If your product has
been damaged during transit, ple
ase contact
your dealer or PRO ACTIV immediately.

Operating instructions LITTY 4you
4
5 Introduction
Before starting your journey, familiarise
yourself with these operating instructions pay-
ing particular attention to the safety information
and hazard warnings contained within them.
Why not let therapists and doctors advise
you, your carers and assistants on how to use
the product and what you are safe to do with
the product based on your current ability. Clar-
ify with them as well which wheelchair tech-
niques you can learn on the basis of your abil-
ity. Under no circumstances should you do
anything with or in the product which you have
not learnt to and have not mastered.
You, your carers and assistants should
also seek advice from your therapists and doc-
tors as well as your specialist retailer on the
use and settings on your product as well as
available safety accessories (e.g. anti-tippers
and waist belt). It is then important that you
also follow this advice.
Overestimating your own ability or under-
estimating a dangerous situation or action with
the product can have serious consequences
for you and other people.
If you are not sure how to handle the
product or if technical faults occur, please con-
tact your dealer or PRO ACTIV before using it.
Make sure that when combining your
product with equipment made by other manu-
facturers (e.g. seat cushion, drive devices,
etc.) that the serviceability of the individual
components and the unit made up of them is
ensured. You can get information on the suit-
ability of a combination from the manufacturer
of the external components or from your spe-
cialist retailer.
6 Product description / purpose
Using the product as intended is essentially
based on replacing the walking ability of a
person who has difficulty walking or cannot
walk on a paved path by driving with the
wheelchair as far as is technically feasible. In a
figurative sense, "walking" means walking
speed when using a wheelchair. Particular
attention needs to be paid to this when using
an auxiliary drive.
7 Acceptable usage and operating
conditions / places of use
Only use the product on paved surfaces. Avoid
driving on unpaved or loose surfaces (e.g. on
loose gravel, in sand, mud, snow, ice or
through deep puddles of water), as this may
result in incalculable risks.
The maximum permitted load of the product in
its standard design is a 50kg payload. Individ-
ual customisation can be made to accommo-
date a higher load; this will be indicated on the
ratings plate. Please ensure that the load limit
indicated on the ratings plate is not exceeded,
even when transporting objects and carrying
out strength exercises in the wheelchair.

Operating instructions LITTY 4you
5
8 Technical specifications
8.1 Product weight
The total weight depends on the dimensions
and accessories and starts from 6.7 kg.
8.2 Load weight
Maximum load weight:
Up to 50kg payload
8.3 Obstacle height and turning circle
Maximum drive-over / negotiable obstacle
height: 10cm
Turning circle: approx. 1m
8.4 Service life
The service life of the product is 6 years in
accordance with the medical products law.
9 Commissioning
The product is handed over to you ready to
use by a PRO ACTIV dealer.
You will be fully instructed in the use of the
product based on the operating instructions
included in delivery. If you wish (recommended
by PRO ACTIV), you will be presented with a
record of training and a hand-over certificate
as written evidence and in addition the operat-
ing instructions and any other accessories for
your own use. The form for the record of train-
ing and the hand-over certificate can be found
in chapters 32 and 33.
It is recommended that you take along an as-
sistant to the training so that, if required, they
can assist you later when handling the product.
During the initial commissioning of the product,
drive at minimum speed and become accus-
tomed to the driving characteristics of the
product. Always adapt the speed and driving
manoeuvres to match your own abilities and
external circumstances. You will get a feel for
how to use the product safely after a short
time.
10 Hand-over
The hand-over must be done by your dealer or
a field representative from PRO ACTIV. During
the hand-over, the record of training (chapter
32) and the hand-over certificate including the
associated check list (chapter 33) must be
filled in. The dealer should send a copy of the
completed documents to PRO ACTIV for filing
either as a scanned file via e-mail, by fax or in
the post. These documents are available as
pdf files which can be completed in the
download area at www.proactiv-gmbh.com.
11 Safety instructions - prior to
driving / use
When getting into the wheelchair, do not
tread on the footrests as this may tip the chair
over.
Before every trip, check the condition of
the wheels (e.g. visual inspection of the spokes
and rims, check the tyres for damage, foreign
bodies and crack formation). If you have any
doubts about the serviceability of the product,
stop using it.
Before starting out, check that the prod-
uct's brake works. If all existing brakes are not
fully functional, no trips may be taken.
Always ensure that your feet cannot slip
off the foot plate when using the product, if
necessary by using a special securing device.
Check tyre pressures at regular intervals.
Ensure that you comply with the manufac-
turer's specifications which can be found on
the tyres. Tyre pressure which is too low af-
fects on the driving behaviour of the product
and has a negative effect on the braking effi-
ciency.

Operating instructions LITTY 4you
6
Before using the product, ensure that the
anti-tippers are in good working order. In this
case, it must not be possible to swivel the anti-
tippers to the side when in operating position
without having to unlock them first.
The lower edge of the anti-tipper wheels
may not be any more than 5 cm from the
ground. If a larger gap is required or neces-
sary, then you need to work with your thera-
pists and doctors to practice and learn to han-
dle the increased risk of tipping.
Due to environmental effects, it is possible
that the properties and therefore secure at-
tachment of the push handle covers may
change detrimentally. For this reason, it is
important to check the handles are tightly fitted
and fixed in position prior to use. If this should
no longer be the case, then the push handles
may not be used until they have been fixed.
Every time before you use the product,
make sure that the anti-tippers and push han-
dles are firmly attached and the quick-release
axles on the caster and drive wheels are also
securely locked in place.
Depending on its optional extras, the
wheelchair may have folding /closing mecha-
nisms which pose a risk of crushing injuries
(e.g. trapping your fingers). For this reason,
please allow your specialist retailer to explain
how to work these mechanisms and then have
a go yourself under instruction.
If required, you can have a suitable waist
belt fitted to your product. Please make sure
that the waist belt is set up so that it does not
have any negative impact on breathing, does
not strangle you should you fall or tip out of the
product and which you can easily remove
yourself.
12 Safety instructions - while driv-
ing / using
Please note that some parts of your prod-
uct can become extremely hot in at hot ambi-
ent temperatures (e.g. a sauna). This means
that above 50°C, the product may be damaged
and above 40°C there is already the risk of
burns for the user, which should not be under-
estimated, particularly for people with impaired
sensitivity. For this reason, the product should
not be exposed to such extreme temperatures.
PRO ACTIV cannot accept any liability or pro-
vide any warranty for personal injury and mate-
rial damage caused by such stresses. There
are also certain risks that exist at extremely
low temperatures, which can be minimised by
wearing appropriately insulating clothes for
example.
Before driving up or down slopes or hills
with the product, you should be proficient in the
safe handling of the product on the flat.
Use particular caution when approaching
stairs, edges, drops or other hazard areas.
When driving round a bend, reduce your
speed to a minimum.
Please note that the knee lever wheel lock
which your product is fitted with is a parking
brake which may only be applied when the
product is at a standstill. This is not a service
brake which is suitable for reducing speed.
Do not attach objects (carrier bags, etc.)
to the product.
When driving on areas which are used for
pedestrians, observe the maximum permitted
speed (walking speed 6 km/h) and keep a
sufficient distance (if possible the width of a
wheelchair) from the kerbs or other obstacles
and other road users.
Avoid driving on unpaved or loose sur-
faces (e.g. on loose gravel, in sand, mud,
snow, ice or through deep puddles of water).

Operating instructions LITTY 4you
7
If you encounter new driving situations
which are unknown to you, approach them with
great care. If you consider that the risk is too
high, you must immediately abort the driving
manoeuvre and, if required, call for help to
assist you in extracting yourself from this situa-
tion.
The product can affect other devices, for
example theft protection barriers in department
stores.
The product is only designed to be used
to transport persons with limited mobility and
must not be used for any other purpose, e.g. to
transport goods.
You may only drive on slopes where the
product can be safely controlled with the hand
rims.
When travelling on poorly maintained
paths with potholes and loose stones, drive
carefully to try to prevent the caster wheels
from becoming locked.
When reversing, the anti-tippers should
always be used as there is an increased risk of
tipping over. If this is not possible, then ask
other people to help ensure that there is no risk
of tipping over.
Due to the high risk of tipping up and be-
ing injured, you should never try to ride an
escalator in the wheelchair.
The product may only be propelled using
the hand rims. If you drive propelling the chair
with the tyres (thumbs or fingers on the tread
of the tyre), there is the risk of crushing or oth-
erwise injuring fingers and thumbs.
Do not reach into the area of the spokes
or other tight spaces in the vicinity of the
wheels. There is an increased risk of being
injured here, particularly while in motion. If you
have limited coordination of your limbs, then
you should protect the spokes with a spoke
shield for example to minimise the risks.
Make sure that the passive illumination
(reflectors) are always on your product, are in
perfect condition and are clearly visible.
13 Safety instructions regarding
obstacles
Obstacles like curbs, for example, should
always be negotiated driving forwards and
always using the minimum speed required.
The maximum obstacle height which can
be negotiated is 10 cm.
When driving over or passing obstacles, it
is important that you avoid any product or body
parts catching on the obstacle. This could re-
sult in falls, serious injuries to the user or third-
parties as well as damage to the product.
Always drive over curbs or other obstacles
so that you cross them to the front or at right
angles. If you approach them at an angle, or
only have one rear wheel on the obstacle,
there is an increased risk of tipping over to the
side which can result in serious injuries to the
user and third-parties as well as damage to the
product.
If the wheelchair user needs to be trans-
ported over an obstacle, such as a step, and if
there are suitable facilities such as a ramp or a
lift available, then these should be used. If
such facilities are not available, then the ob-
stacle is to be overcome by being carried by
two helpers. When carrying the wheelchair, it
may not be lifted by the side sections, the drive
wheels or the footrests. We recommend hold-
ing the product by the lower frame tubes of the
main frame and holding the back cross bar.
Before overcoming an obstacle (steps,
threshold, etc.) the anti-tippers need to be
swivelled from operating to passive position or
need to be detached so that they do not make
contact with the step you are trying to get over.
Otherwise this could lead to a serious fall. After
overcoming the obstacle, the anti-tippers need
to be put back in operating position (Chapter
19).

Operating instructions LITTY 4you
8
To overcome obstacles such as curbs or
steps, the wheelchair needs to be actively
tipped as otherwise the caster wheel could jam
at right angles to the obstacle and could block.
This could damage the caster wheel or the
caster fork and cause injury. If actively tipping
it is not possible, then the obstacle should not
be approached or you need to request assis-
tance from an accompanying person. Particu-
lar attention needs to be paid to this when
using an auxiliary drive.
14 Safety instructions regarding
dangerous locations and dan-
gerous situations
The operator of the product determines the
route to be driven taking the operating instruc-
tions, their driving knowledge and physical
abilities into consideration.
The personal driving skills are particularly im-
portant in the following dangerous locations
which are provided as examples; the product's
user must use their judgement before driving in
such locations:
 quay walls, landing and berthing locations,
paths and locations close to water, unse-
cured bridges and dykes.
 narrow paths, slopes (e.g. ramps and
driveways), narrow paths on a slope,
mountainous routes.
 narrow and / or steeply sloping paths along
main roads or near cliffs.
 routes which are covered in leaves, snow
or ice.
 ramps and lifting equipment on vehicles.
When driving in a circle or turning on hills
or downward slopes, there may be an in-
creased tendency to tip over to the side due to
the changes in the centre of gravity. Always
perform these driving manoeuvres with in-
creased caution and only at slow speed. If
required, the driving manoeuvre must not be
performed or only with the help of an assistant.
When crossing main roads, intersections
and level crossings, extreme caution is
needed. Crossing rails in the road or at level
crossings must never be undertaken when
travelling parallel to them, as otherwise the
wheels could become caught which would
result in the product being unable to manoeu-
vre.
When driving on ramps and lifting equip-
ment on vehicles, extreme caution is needed.
When lifting or lowering the ramp or the lifting
equipment, the parking brake should be ap-
plied.
The grip of the tyres on the ground is re-
duced in the wet. There is an increased risk of
slipping. Adjust your driving, braking and steer-
ing behaviour accordingly.
15 Safety instructions - after driv-
ing / use
Apply the parking brake on your wheel-
chair before getting out.
When getting out of the wheelchair, do not
tread on the footrest due to the risk of tipping
up.
16 Individual setting options
16.1 Seat height front and back & an-
gle of seat
The angle of the seat plate can be adjusted
using the four rotation points on the sides.
To do this, two M6 fixing screws (AF 4 mm)
need to be undone on each side. Using an
Allen key (AF 6 mm) the four rotation points
can now be rotated to the required position to
adjust the required seat heights.
After adjusting the seat height at the front and
back, make sure that the opposite rotation
points are positioned symmetrically flush or
respectively, that the opposite rotation points
are in the same position. Afterwards, tighten
the M6 fixing screws on the rotation points (AF
4 mm) again using 7 Nm torque.

9
Figure 1: Adjusting the
seat heights using the rota
ing points
If you need a greater adjustment range for the
seat heights, the
seat plate can be turned
over
(seat height adjustment approx. 3 cm). To
do this, undo the M6 fixing screws at the rot
tion points (AF 4 mm) completely,
seat plate and replace it turned upside down.
Please make sure that the straight edge r
mains at the front. You can see the seat plate
in the high and low position in the following
figures. Afterwards, tighten the M6 fixing
screws on the rotati
on points (AF 4 mm) again
using 7 Nm torque.
Figure 2
: Seat plate in high position, slots down
Figure 3
: Seat plate in low position, slots up
Rotating the rotation points
positions (AF 6 mm)
M6 fixing screws
Rotation
points
Operating instructions LITTY 4you
seat heights using the rota
t-
If you need a greater adjustment range for the
seat plate can be turned
(seat height adjustment approx. 3 cm). To
do this, undo the M6 fixing screws at the rot
a-
tion points (AF 4 mm) completely,
remove the
seat plate and replace it turned upside down.
Please make sure that the straight edge r
e-
mains at the front. You can see the seat plate
in the high and low position in the following
figures. Afterwards, tighten the M6 fixing
on points (AF 4 mm) again
: Seat plate in high position, slots down
: Seat plate in low position, slots up
Every time the seat heights and angles
are adjust
ed, the position of the footrest needs
adjusting as well. Make sure the clearance
under the footrest is sufficient. Experience
shows that this should not be less than 4 cm.
You will find more details in
16.2
Back shell position
The angle of the back shell and its spacing
position from the seat plate can be adjusted by
undoing the four M5 fixing screws (AF 3 mm)
in the mounting slots
. The associated nuts
(AF 5mm) must be tightened for this. For good
seating posture, we recommend p
the back shell vertically if possible.
Figure 4
: Mounting slots on the back shell
You can get an even greater adjustment range
by completely undoing the M5 fixing screws
(AF 3 mm)
and moving them in the
ignated boreholes
in the clothing guard. Make
sure that the position of the M5 fixing screws
on the right-hand and left-
hand clothing guard
are identical.
Figure 5
: Adjustment range for back shell on clot
ing guard
Boreholes for
back shell a
justment
Rotating the rotation points
positions (AF 6 mm)
M6 fixing screws
Rotation
points
Operating instructions LITTY 4you
Every time the seat heights and angles
ed, the position of the footrest needs
adjusting as well. Make sure the clearance
under the footrest is sufficient. Experience
shows that this should not be less than 4 cm.
You will find more details in
Chapter 16.5.
Back shell position
The angle of the back shell and its spacing
position from the seat plate can be adjusted by
undoing the four M5 fixing screws (AF 3 mm)
. The associated nuts
(AF 5mm) must be tightened for this. For good
seating posture, we recommend p
ositioning
the back shell vertically if possible.
: Mounting slots on the back shell
You can get an even greater adjustment range
by completely undoing the M5 fixing screws
and moving them in the
three des-
in the clothing guard. Make
sure that the position of the M5 fixing screws
hand clothing guard
: Adjustment range for back shell on clot
h-
Boreholes for
back shell a
d-
justment
M5 fixing screws
(rear) with nuts

Operating instructions LITTY 4you
Once the position of the back shell has been
set, tighten the M5 fixing screws (AF 3 mm)
using 4 Nm torque again. The associated nuts
(AF 5mm) must be tightened for this.
Pl
ease note that if you move the back shell
further back, this will move the centre of gravity
further back which makes it easier to tip the
product up (Chapter 16.6).
16.3 Adjusting seat width
To widen the product, widening sets can be
ordered which are may up
of an axle tube, seat
plate, back shell and back cross bar as well as
footrest support tubes or foot plate in a corr
sponding size.
Figure 6
: Back cross bar and axle bar, view of pro
uct from rear
Contact your specialist retailer if you want to
change the width of the seat.
16.4
Adjusting the seat depth
To adjust the seat depth to suit body dime
sions, the distance between the seat plate and
back shell can be infinitely adjusted. The a
justment is made by undoing the
screws (AF 4 mm) on each side
in the
points.
Axle tube
Back cross bar
Operating instructions LITTY 4you
Once the position of the back shell has been
set, tighten the M5 fixing screws (AF 3 mm)
using 4 Nm torque again. The associated nuts
(AF 5mm) must be tightened for this.
ease note that if you move the back shell
further back, this will move the centre of gravity
further back which makes it easier to tip the
To widen the product, widening sets can be
of an axle tube, seat
plate, back shell and back cross bar as well as
footrest support tubes or foot plate in a corr
e-
: Back cross bar and axle bar, view of pro
d-
Contact your specialist retailer if you want to
Adjusting the seat depth
To adjust the seat depth to suit body dime
n-
sions, the distance between the seat plate and
back shell can be infinitely adjusted. The a
d-
justment is made by undoing the
two M6 fixing
in the
rotation
Figure 7:
Fixing screws on the seat plate in the
rotation points
Afterwards, the seat plate is
slots on the fixing screws.
Figure 8
: Possible directions of movement of the
seat plate with slots
Afterwards, tighten the M6 fixing screws (AF 4
mm) on the rotation points again using 7 Nm
torque.
After
adjusting the seat plate, it may be nece
sary to adjust the position of the back shell.
Please pay attention to the advice in Chapter
16.2.
16.5
Adjusting the lower leg length
adjusting the footrest
The footrest support tubes are clamped on the
left and right
onto the lower frame tubes into
the foot bracket clamps. The foot bracket
clamps are secured against twisting through
interlocking serration.
Back cross bar
M6 fixing screws
10
Fixing screws on the seat plate in the
Afterwards, the seat plate is
shifted along the
: Possible directions of movement of the
Afterwards, tighten the M6 fixing screws (AF 4
mm) on the rotation points again using 7 Nm
adjusting the seat plate, it may be nece
s-
sary to adjust the position of the back shell.
Please pay attention to the advice in Chapter
Adjusting the lower leg length
adjusting the footrest
The footrest support tubes are clamped on the
onto the lower frame tubes into
the foot bracket clamps. The foot bracket
clamps are secured against twisting through
M6 fixing screws

11
Figure 9: Illustration of terms
Figure 10
: Serration on the foot bracket clamp, with
positive locking
To
adjust the length of the support tubes
the M6 fixing screws (AF 5mm) on the foot
bracket clamps have to be undone. The length
of the support tubes can then be adjusted.
Figure 11
: Fixing screws on the foot bracket clamps
(Footrest)
support
tubes
Foot bracket
clamps
M6 fixing screw
Interlocking serration
with positive locking
Operating instructions LITTY 4you
: Serration on the foot bracket clamp, with
adjust the length of the support tubes
,
the M6 fixing screws (AF 5mm) on the foot
bracket clamps have to be undone. The length
of the support tubes can then be adjusted.
: Fixing screws on the foot bracket clamps
If the angle of the
support tubes
changed, then the M6 fixing screws (AF 5 mm)
need to be loosened further so that the positive
locking on the interlocking serration is r
leased. Now the angle of the support tubes can
be adjusted.
Once you have finished adjusting th
and the length, tighten the M6 fixing screws
(AF 5 mm) again using 7 Nm tightening torque.
Figure 12
: Serration on foot bracket clamps, positive
locking undone
The angle of the
foot plate
justed by loosening the M6 clamp screws (AF
5 mm) on the bottom of the foot rest. Once the
adjustment of the angle has been completed,
tighten the M6 clamp screws (AF 5 mm) with 7
Nm tightening torque. This tighten
should not be exceeded as higher tightening
torques can damage the clamp.
Figure 13
: Foot rest from below
M6 fixing screw
M6 clamp screws
Foot rest
Interlocking serration with
positive lock released
Operating instructions LITTY 4you
support tubes
is to be
changed, then the M6 fixing screws (AF 5 mm)
need to be loosened further so that the positive
locking on the interlocking serration is r
e-
leased. Now the angle of the support tubes can
Once you have finished adjusting th
e angle
and the length, tighten the M6 fixing screws
(AF 5 mm) again using 7 Nm tightening torque.
: Serration on foot bracket clamps, positive
foot plate
can also be ad-
justed by loosening the M6 clamp screws (AF
5 mm) on the bottom of the foot rest. Once the
adjustment of the angle has been completed,
tighten the M6 clamp screws (AF 5 mm) with 7
Nm tightening torque. This tighten
ing torque
should not be exceeded as higher tightening
torques can damage the clamp.
: Foot rest from below
Foot rest
Interlocking serration with
positive lock released
Foot rest
support plate

Operating instructions LITTY 4you
As an option it is also possible to choose a
foot plate which can be folded up towards the
back. If this angle is to be adjusted, then the
procedure is the same as above, however after
competing the adjustment work, the M6 clamp
screws (AF 5 mm) need to b
e secured with
thread lock fluid.
Measures need to be taken to ensure
there is sufficient ground clearance under the
foot rest. Experience shows that this should
not be less than 4 cm.
16.6
Adjusting the tipping point
The tipping point can be adjusted by adj
the seat plate and back shell. You will find
descriptions on this in
Chapters 16.1 and 16.2.
An optimal tipping behaviour of the pro
uct is attained if the hollow axle of the drive
wheels is close to the body's centre of gravity
(as a general rule
, slightly in front of the hips)
A product adjusted like this can be driven with
little effort and it also makes it possible to
manage a slightly uneven surface or edges by
tipping slightly. Driving on the two rear wheels
(doing a wheelie) is relatively e
asy to learn.
Inexperienced wheelchair users are prevented
from tipping over backwards by anti
Although shifting the seat system forwards
will counteract the tipping danger, it also
makes it more difficult to turn, steer and tilt the
product. In
any case, the setting should be
made to suit your individual requirements and
ability to ensure you can drive your chair
safely.
Operating instructions LITTY 4you
As an option it is also possible to choose a
foot plate which can be folded up towards the
back. If this angle is to be adjusted, then the
procedure is the same as above, however after
competing the adjustment work, the M6 clamp
e secured with
Measures need to be taken to ensure
there is sufficient ground clearance under the
foot rest. Experience shows that this should
Adjusting the tipping point
The tipping point can be adjusted by adj
usting
the seat plate and back shell. You will find
Chapters 16.1 and 16.2.
An optimal tipping behaviour of the pro
d-
uct is attained if the hollow axle of the drive
wheels is close to the body's centre of gravity
, slightly in front of the hips)
.
A product adjusted like this can be driven with
little effort and it also makes it possible to
manage a slightly uneven surface or edges by
tipping slightly. Driving on the two rear wheels
asy to learn.
Inexperienced wheelchair users are prevented
from tipping over backwards by anti
-tippers.
Although shifting the seat system forwards
will counteract the tipping danger, it also
makes it more difficult to turn, steer and tilt the
any case, the setting should be
made to suit your individual requirements and
ability to ensure you can drive your chair
17 Drive wheels
17.1
Removing and attaching the drive
wheels
Figure 14: Locking knob
in the middle of the wheel
axle
To
remove the drive wheels
spokes around the wheel hub with your fingers.
By pressing the locking knob in the middle of
the wheel axle with your thumb, the wheels
can then easily be removed.
When attaching
the drive wheels
knob also has to be pressed. Special attention
should be paid here to ensure that the knob
springs out again after attaching the wheel as
otherwise it is not secured. You will know that if
you can see the index groove.
Figure 15
: Quick release axle with index groove
Before using the product, ensure that the
wheel is secure.
Locking knob
Index groove
12
Removing and attaching the drive
in the middle of the wheel
remove the drive wheels
grip through the
spokes around the wheel hub with your fingers.
By pressing the locking knob in the middle of
the wheel axle with your thumb, the wheels
can then easily be removed.
the drive wheels
the locking
knob also has to be pressed. Special attention
should be paid here to ensure that the knob
springs out again after attaching the wheel as
otherwise it is not secured. You will know that if
you can see the index groove.
: Quick release axle with index groove
Before using the product, ensure that the
Locking knob
Index groove

13
17.2
Checking and adjusting the wheel
tracking of the drive wheel
Well adjusted wheel tracking
significantly i
proves the easy running characteristics of the
product. To check
the tracking, proceed as
follows:
Position the wheel chair on a flat surface and
apply the parking brake on both sides.
Measure the axle heights (from the ground to
the drive
wheel axle) and write this dimension
onto both tyres at front and back.
Figure 16
: Drawing the axle height on the front and
back of both tyres
Afterwards meas
ure the distance between the
drive wheels front and back
at the height of
the axles along the markers. Ideally, the di
tance between the two drive wheels should be
the same size at the front and back. In general
it can be said that the distance between the
drive wheels at the front may not be larger than
at the back. Apart from that, the distance at the
back may not be more than 5 mm larger that at
the front. If this is not the case, the wheel
tracking needs to be corrected.
Figure 17
: Distance between the markers on the
tyres (at axle height), back
•
Axle height
Drawing the axle height onto tyres
Markings
Distance
Operating instructions LITTY 4you
Checking and adjusting the wheel
tracking of the drive wheel
significantly i
m-
proves the easy running characteristics of the
the tracking, proceed as
Position the wheel chair on a flat surface and
apply the parking brake on both sides.
Measure the axle heights (from the ground to
wheel axle) and write this dimension
onto both tyres at front and back.
: Drawing the axle height on the front and
ure the distance between the
at the height of
the axles along the markers. Ideally, the di
s-
tance between the two drive wheels should be
the same size at the front and back. In general
it can be said that the distance between the
drive wheels at the front may not be larger than
at the back. Apart from that, the distance at the
back may not be more than 5 mm larger that at
the front. If this is not the case, the wheel
: Distance between the markers on the
To adjust the track
proceed as follows:
1.
Loosen the aluminium locking nuts on both
sides (AF 41 mm).
Figure 18
: Drive wheel bushing and aluminium,
locking nut, product view from below
2.
Set the tracking correctly again by turning
the drive wheel bushing (AF 22 mm). Here
it can be said that: If you turn the drive
wheel bushing
in the direction of travel, the
track at the front will become more narrow.
If you turn it against the direction of travel,
it moves in the opposite direction.
3.
Make sure that the distance at the front to
the frame on the right and left is the same.
Figure 19
: Distance at the front to the frame
4.
Measure the distance between the drive
wheels at the front and back again
axle height (along the markers) so that the
distance between the rive wheels is not
any larger at the front than at the back.
Apart from that, the distance at the back
Axle height
Drawing the axle height onto tyres
Distance at
front to frame
the same size
on both sides
Drive wheel bushing
Aluminium locking nuts
Operating instructions LITTY 4you
proceed as follows:
Loosen the aluminium locking nuts on both
: Drive wheel bushing and aluminium,
locking nut, product view from below
Set the tracking correctly again by turning
the drive wheel bushing (AF 22 mm). Here
it can be said that: If you turn the drive
in the direction of travel, the
track at the front will become more narrow.
If you turn it against the direction of travel,
it moves in the opposite direction.
Make sure that the distance at the front to
the frame on the right and left is the same.
: Distance at the front to the frame
Measure the distance between the drive
wheels at the front and back again
at the
axle height (along the markers) so that the
distance between the rive wheels is not
any larger at the front than at the back.
Apart from that, the distance at the back
Distance at
front to frame
the same size
on both sides
Drive wheel bushing
Aluminium locking nuts

Operating instructions LITTY 4you
may not be more than 5 mm larger that at
the front.
Figure 20
: Distance between the markers on the
tyres (at axle height), back
5.
If all the distances are correct, then use an
open-
ended spanner (AF 22 mm) to hold
the drive wheel bushing in position and
tighten the aluminium
locking nut (AF 41
mm) with a tightening torque of 70 Nm.
17.3 Air pressure
Check the tyre pressure at regular intervals
and after being subjected to extreme temper
tures. The maximum and if applicable, min
mum tyre pressure is printed on the side of the
tyre.
If the tyre pressure is too low, then optimal
functionality of the knee lever brake is not e
sured. Apart from that, there is an increased
risk of a flat tyre.
The tyre pressure increase with the te
perature. If the pressure is too high, the tyre
may
burst. For this reason, wheelchair tyres
may not be exposed to unusually high te
peratures such as in a sauna or under glass in
the summer.
17.4 Other
If tyres, inner tubes or hand rims need to be
replaced, please contact your specialist r
tailer.
Markings
Distance
Operating instructions LITTY 4you
may not be more than 5 mm larger that at
: Distance between the markers on the
If all the distances are correct, then use an
ended spanner (AF 22 mm) to hold
the drive wheel bushing in position and
locking nut (AF 41
mm) with a tightening torque of 70 Nm.
Check the tyre pressure at regular intervals
and after being subjected to extreme temper
a-
tures. The maximum and if applicable, min
i-
mum tyre pressure is printed on the side of the
If the tyre pressure is too low, then optimal
functionality of the knee lever brake is not e
n-
sured. Apart from that, there is an increased
The tyre pressure increase with the te
m-
perature. If the pressure is too high, the tyre
burst. For this reason, wheelchair tyres
may not be exposed to unusually high te
m-
peratures such as in a sauna or under glass in
If tyres, inner tubes or hand rims need to be
replaced, please contact your specialist r
e-
18 Caster wheels
18.1
Replacing the caster wheels
To remove
a caster wheel, unscrew the M6
axle fixing screw (AF 4 mm) out on one side.
Figure 21
: Axle fixing screw on caster wheel axle
Figure 22
: Caster wheel with aluminium axle
Now you can see the aluminium axle with a
hexagon socket (AF 4 mm). This hexagon
socket is used to fix the axle in place, while the
second axle fitting screw (AF 4 mm) (
unscrewed. To do this, insert the Allen key (AF
4 mm) into the hexagon socket on the alumi
ium axle and hold it still. At the same time,
unscrew the remaining M6 axle fixing screw
(AF 4 mm) on the other side.
When attaching
the caster wheel, procee
described above in reverse order. The tighte
ing torque for the axle fitting screw (AF 4 mm)
is 7 Nm. The axle fitting screws need to be
secured with thread lock fluid.
M6 axle fixing screw
Aluminium axle with
hexagon socket
14
Replacing the caster wheels
a caster wheel, unscrew the M6
axle fixing screw (AF 4 mm) out on one side.
: Axle fixing screw on caster wheel axle
: Caster wheel with aluminium axle
Now you can see the aluminium axle with a
hexagon socket (AF 4 mm). This hexagon
socket is used to fix the axle in place, while the
second axle fitting screw (AF 4 mm) (
Fig. 21) is
unscrewed. To do this, insert the Allen key (AF
4 mm) into the hexagon socket on the alumi
n-
ium axle and hold it still. At the same time,
unscrew the remaining M6 axle fixing screw
(AF 4 mm) on the other side.
the caster wheel, procee
d as
described above in reverse order. The tighte
n-
ing torque for the axle fitting screw (AF 4 mm)
is 7 Nm. The axle fitting screws need to be
secured with thread lock fluid.
M6 axle fixing screw

15
18.2
Caster wheels flapping
Uncontrolled swivelling backwards and fo
wards of the caste
r wheels around their axes
on the caster fork (while moving) is called "flu
tering".
If the caster wheels start fluttering, then
immediately reduce the speed you are trave
ling at to avoid the caster wheels jamming
sideways so as to avoid the risk of fal
The speed limit at which a caster wheel can
start fluttering, reduces with:

increasing size of the caster wheels

increasing weight of caster wheels

falling load on the caster wheels

decreasing caster length of caster wheels
The following option
s are available to counte
act caster fluttering:

Fluttering can be reduced by reducing the
caster wheel diameter. This means instal
ing a small caster wheel in a different
wheel position in the caster wheel fork
(seat height thus remains the same) would
be
one way of reducing fluttering. Ho
ever, please note that using a smaller
caster wheel makes it more difficult to
overcome obstacles and makes tilting ne
essary more often. The smaller the caster
wheel is, the more driving skill is required.
 Another way t
o reduce fluttering would for
example be to use a light caster wheel with
the same diameter or, as described above,
with a smaller diameter.

It would also be possible to increase the
caster length. The caster length is the di
tance between the rotary axle
wheel fork projected onto the floor and the
wheel contact point. The wheel contact
point of the caster wheel trails behind the
rotary axle as it were. The caster length
has a stabilizing effect on moving in a
straight line. Increasing the cas
can be attained by mounting the caster
wheel in a different wheel position on the
caster wheel fork (the caster wheel fork r
Operating instructions LITTY 4you
Caster wheels flapping
Uncontrolled swivelling backwards and fo
r-
r wheels around their axes
on the caster fork (while moving) is called "flu
t-
If the caster wheels start fluttering, then
immediately reduce the speed you are trave
l-
ling at to avoid the caster wheels jamming
sideways so as to avoid the risk of fal
ling over.
The speed limit at which a caster wheel can
increasing size of the caster wheels
increasing weight of caster wheels
falling load on the caster wheels
decreasing caster length of caster wheels
s are available to counte
r-
Fluttering can be reduced by reducing the
caster wheel diameter. This means instal
l-
ing a small caster wheel in a different
wheel position in the caster wheel fork
(seat height thus remains the same) would
one way of reducing fluttering. Ho
w-
ever, please note that using a smaller
caster wheel makes it more difficult to
overcome obstacles and makes tilting ne
c-
essary more often. The smaller the caster
wheel is, the more driving skill is required.
o reduce fluttering would for
example be to use a light caster wheel with
the same diameter or, as described above,
It would also be possible to increase the
caster length. The caster length is the di
s-
tance between the rotary axle
of the caster
wheel fork projected onto the floor and the
wheel contact point. The wheel contact
point of the caster wheel trails behind the
rotary axle as it were. The caster length
has a stabilizing effect on moving in a
straight line. Increasing the cas
ter length
can be attained by mounting the caster
wheel in a different wheel position on the
caster wheel fork (the caster wheel fork r
o-
tary axle is then no longer completely at
right angles to the ground).
Figure 23: Caster length
18.3
Replacing the caster wheel forks
A distinction needs to be made between the
caster wheel forks with a bolt
those with a quick-
release axle.
18.3.1
Caster wheel fork with bolt
The
caster wheel fork with a bolt
removed
using a wrench which is included in
the scope of delivery. This wrench is inserted
into the two holes on the protective cap on the
caster wheel bearing block and turne
clockwise. The caster wheel fork needs to be
held still. Once the cap has been completely
removed, the caster wheel fork can be pulled
out.
Rotary axle for
c
aster wheel
Caster length
Wheel extension
point
Operating instructions LITTY 4you
tary axle is then no longer completely at
right angles to the ground).
Replacing the caster wheel forks
A distinction needs to be made between the
caster wheel forks with a bolt
-on axle and
release axle.
Caster wheel fork with bolt
-on axle
caster wheel fork with a bolt
-on axle is
using a wrench which is included in
the scope of delivery. This wrench is inserted
into the two holes on the protective cap on the
caster wheel bearing block and turne
d anti-
clockwise. The caster wheel fork needs to be
held still. Once the cap has been completely
removed, the caster wheel fork can be pulled
Wheel extension
point

Operating instructions LITTY 4you
Figure 24: Loosening the protective
cap on the
caster wheel bearing block with a wrench
Figure 25
: Protective cap of the caster wheel bea
ing block completely removed
When
attaching the caster wheel fork with a
bolt-on axle, insert the
caster wheel fork r
tary axle back into the caster wheel bearing
block and tighten the protective cap of the
caster wheel bearing block again using the
wrench and secure it with thread lock fluid.
18.3.2
Caster wheel fork with quick
axle
The cast
er wheel fork with a quick release
axle is removed
by pressing the locking knob
between the caster wheel and the inside of the
caster wheel fork. Reach into the caster wheel
fork and press the locking knob. The caster
wheel fork can now be pulled out.
Wrench
Caster wheel
bearing block
Protective cap
Operating instructions LITTY 4you
cap on the
caster wheel bearing block with a wrench
: Protective cap of the caster wheel bea
r-
attaching the caster wheel fork with a
caster wheel fork r
o-
tary axle back into the caster wheel bearing
block and tighten the protective cap of the
caster wheel bearing block again using the
wrench and secure it with thread lock fluid.
Caster wheel fork with quick
-release
er wheel fork with a quick release
by pressing the locking knob
between the caster wheel and the inside of the
caster wheel fork. Reach into the caster wheel
fork and press the locking knob. The caster
wheel fork can now be pulled out.
Figure 26
: Caster wheel fork with quick release axle
and locking knob
When
attaching the caster wheel fork with
the quick release axle
, press the locking knob
again and insert the caster wheel
axle back into the caster wheel bearing block.
When doing this, special attention should be
paid to ensure that the locking knob springs
out again after attaching the wheel as othe
wise the wheels are not secure.
19 Anti-tippers
To reduce the ri
sk of tipping backwards uni
tentionally to a minimum, anti
able as accessories. The anti
serted into anti-
tipper sleeves in the bottom
frame tubes which secures them against twis
ing.
Figure 27
: Illustration of terms
Quick Pins
Anti-
tipping wheels
Anti-
tippers
Locking knob in
inside of fork
Wrench
Caster wheel
bearing block
Protective cap
16
: Caster wheel fork with quick release axle
attaching the caster wheel fork with
, press the locking knob
again and insert the caster wheel
fork rotary
axle back into the caster wheel bearing block.
When doing this, special attention should be
paid to ensure that the locking knob springs
out again after attaching the wheel as othe
r-
wise the wheels are not secure.
sk of tipping backwards uni
n-
tentionally to a minimum, anti
-tippers are avail-
able as accessories. The anti
-tippers are in-
tipper sleeves in the bottom
frame tubes which secures them against twis
t-
: Illustration of terms
Quick Pins
tipping wheels
tippers
Locking knob in
inside of fork

17
Figure 28: Cylindrical pin in groove
A spring system on the anti-
tippers can be
used for example to overcome obstacles to
swivel them
from the operating to passive
position
so that they can't get caught on the
obstacle. To swivel the anti-
tippers away, pull
them each backwards out of the anti
barrels until the cylindrical pin protrudes from
the grooves and then turn these by 180° u
wards so that the anti-
tipping wheel points
upwards (Fig. 30).
After releasing the anti
tippers, the cylindrical pin slots into the groove
again.
After pass
ing the obstacle, use the same pro
ess to return the anti-tippers
from the passive
to the operating position again
that these have clicked back into place again
properly (Fig. 31).
When changing between passive and
operating position, always t
urn the anti
outwards in the direction of the respective drive
wheel as otherwise this could damage the
springs.
Figure 29
: Operating and passive position of the
anti-tippers
Operating
position
Cylindrical
pin in
groove
Anti
sleeve
Operating instructions LITTY 4you
tippers can be
used for example to overcome obstacles to
from the operating to passive
so that they can't get caught on the
tippers away, pull
them each backwards out of the anti
-tipper
barrels until the cylindrical pin protrudes from
the grooves and then turn these by 180° u
p-
tipping wheel points
After releasing the anti
-
tippers, the cylindrical pin slots into the groove
ing the obstacle, use the same pro
c-
from the passive
again
. Make sure
that these have clicked back into place again
When changing between passive and
urn the anti
-tippers
outwards in the direction of the respective drive
wheel as otherwise this could damage the
: Operating and passive position of the
Figure 30: Move anti-
tippers from operating to pa
sive position
Figure 31: Moving anti-
tippers from passive to ope
ating position
The anti-
tippers have exclusively been
designed to minimize the risk of tipping over
backwards. They are not suitable for reducing
the risk of tipping forwards or to the side. There
are no safety accessories available to minimise
these risks. For this rea
son, handling these
risks need to be learnt in cooperation with your
therapists and doctors.
Passive
position
Operating
position
Pull out anti-
tippers and turn
them upwards to
left or right
Pull out anti
tippers and turn
them downwards
to left or right
Anti
-tipper
sleeve
rotate
rotate
pull
Operating instructions LITTY 4you
tippers from operating to pa
s-
tippers from passive to ope
r-
tippers have exclusively been
designed to minimize the risk of tipping over
backwards. They are not suitable for reducing
the risk of tipping forwards or to the side. There
are no safety accessories available to minimise
son, handling these
risks need to be learnt in cooperation with your
Pull out anti
-
tippers and turn
them downwards
to left or right
pull
rotate
pull

Operating instructions LITTY 4you
Before using the wheelchair, after every
load on the anti-
tippers and after every adjus
ment to the product, make sure that the anti
tippers are fully
functional. In this case the anti
tipper in operating position must not allow itself
to be pushed away to the side without undoing
it from its locked position (cylindrical pin in
groove). In addition to that, the lower edge of
the anti-tippers may be no mo
re than 5 cm
away from the ground. If a larger gap is r
quired or necessary, then you need to work
with your therapists and doctors to practice
and learn to handle the increased risk of ti
ping.
If the functionality of the anti
should no longer b
e given or if you are in any
doubt about the serviceability, then have it
checked by your specialist retailer and have it
repaired before any further use. Otherwise
there is an increased risk or falling of getting
injured.
For example, the anti-
tippers can
pletely removed
using a quick pin to transport
the product. To do this, press on the locking
knob on the quick pin and pull it out. Afte
wards, the anti-
tippers can be pulled out of the
anti-tipper barrels.
Figure 32
: Quick Pin with locking knob
The Quick Pins can then be inserted in the
boreholes in the frame tubes to prevent losing
them.
Locking knob
Operating instructions LITTY 4you
Before using the wheelchair, after every
tippers and after every adjus
t-
ment to the product, make sure that the anti
-
functional. In this case the anti
-
tipper in operating position must not allow itself
to be pushed away to the side without undoing
it from its locked position (cylindrical pin in
groove). In addition to that, the lower edge of
re than 5 cm
away from the ground. If a larger gap is r
e-
quired or necessary, then you need to work
with your therapists and doctors to practice
and learn to handle the increased risk of ti
p-
If the functionality of the anti
-tippers
e given or if you are in any
doubt about the serviceability, then have it
checked by your specialist retailer and have it
repaired before any further use. Otherwise
there is an increased risk or falling of getting
tippers can
be com-
using a quick pin to transport
the product. To do this, press on the locking
knob on the quick pin and pull it out. Afte
r-
tippers can be pulled out of the
: Quick Pin with locking knob
The Quick Pins can then be inserted in the
boreholes in the frame tubes to prevent losing
Figure 33: Anti-
tippers removed and quick pins in
boreholes in anti-
tipper barrels
To attach the anti-
tippers
anti-tippers into the anti-
tipper barrels. Make
sure that you place the cylindrical pins in the
grooves. Then take a quick pin for every anti
tipper in your hand, press the locking knob on
the quick pin and inse
rt it back into the bor
hole on the frame tube.
20 Brake
Figure 34
: Knee lever brake with brake operation
integrated in the clothing guard
18
tippers removed and quick pins in
tipper barrels
tippers
again, plug the
tipper barrels. Make
sure that you place the cylindrical pins in the
grooves. Then take a quick pin for every anti
-
tipper in your hand, press the locking knob on
rt it back into the bor
e-
: Knee lever brake with brake operation
integrated in the clothing guard

19
It can become necessary to adjust the brake
for various reasons:
 You have changed the
tyre or the tyre
pressure.

You have changed the wheel tracking of
the drive wheels.

The brake is pulling unevenly or insuff
ciently after extended use.
To adjust the knee lever brake, proceed as
follows:
1.
Loosen the M5 fixing screws (AF 4 mm)
which are use
d to attach the brake to the
brake mounting bar on the brake mount.
Figure 35: Bottom brake mount
Figure 36: Brake mount
and brake mounting bar
2.
Position the open brake so that there is 2
mm clearance between the brake bolt and
tyre up to a maximum of 4 mm. You can
use the adjustment range provided by the
slots on the brake mounting bar.
M5 fixing screws
Brake mounting
bar with slots
Brake
mount
Operating instructions LITTY 4you
It can become necessary to adjust the brake
tyre or the tyre
You have changed the wheel tracking of
The brake is pulling unevenly or insuff
i-
To adjust the knee lever brake, proceed as
Loosen the M5 fixing screws (AF 4 mm)
d to attach the brake to the
brake mounting bar on the brake mount.
and brake mounting bar
Position the open brake so that there is 2
mm clearance between the brake bolt and
tyre up to a maximum of 4 mm. You can
use the adjustment range provided by the
slots on the brake mounting bar.
Figure 37
: Distance between brake bolt and tyre
from 2 mm to maximum 4 mm, with opened brake
3.
Tighten the M5 fixing screws (AF 4 mm)
again using a tightening torque of 4 Nm.
4.
Check that the brakes are adjusted co
rectly: On a slope (7° gradient), the whee
chair
should stand firm with the brake a
plied. This will happen if with the brake a
plied, the tyre is depressed or deformed by
approx. 4 mm.
When the brake is not a
plied, the brake bolt may not drag along
the tyre.
5.
Retrospective fine adjustments can be
made
at any time using the infinitely a
justable adjustment screw on the lower
mount of the wire rope. To do this, open
the lock nuts (AF 8 mm) and unscrew the
adjustment screw. This will tension the
wire rope until the required distance b
tween the brake bolt
and the drive wheel is
reached. Then tighten the lock nuts again
with a tightening torque of 4 Nm.
Figure 38
: Fine adjustments to the brake using the
adjustment screw on the lower mount for th
rope
Brake mounting
bar with slots
Lock nut
Operating instructions LITTY 4you
: Distance between brake bolt and tyre
from 2 mm to maximum 4 mm, with opened brake
Tighten the M5 fixing screws (AF 4 mm)
again using a tightening torque of 4 Nm.
Check that the brakes are adjusted co
r-
rectly: On a slope (7° gradient), the whee
l-
should stand firm with the brake a
p-
plied. This will happen if with the brake a
p-
plied, the tyre is depressed or deformed by
When the brake is not a
p-
plied, the brake bolt may not drag along
Retrospective fine adjustments can be
at any time using the infinitely a
d-
justable adjustment screw on the lower
mount of the wire rope. To do this, open
the lock nuts (AF 8 mm) and unscrew the
adjustment screw. This will tension the
wire rope until the required distance b
e-
and the drive wheel is
reached. Then tighten the lock nuts again
with a tightening torque of 4 Nm.
: Fine adjustments to the brake using the
adjustment screw on the lower mount for th
e wire
Adjustment
screw