Küschall K-SERIES attract User manual

Service Manual
KÜSCHALL K-SERIES attract
DEALER: Keep this manual.
The procedures in this manual MUST be performed by a
qualified technician.

©2014 Küschall AG
All rights reserved. Republication, duplication or modification in whole or in part is prohibited without prior written
permission from Küschall AG. Trademarks are identified by ™and ®.
All trademarks are owned by or licensed to Küschall AG or its subsidiaries unless otherwise noted.

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Service Manual
TABLE OF CONTENTS
GENERAL...................................................................................................................... 4
Introduction 4
Spare parts and adaptations 4
Tightening Allen screws 4
Torque 5
Checks 5
Identifying and alleviating malfunctions 5
OVERVIEW ....................................................................................................................6
Components 6
Dimensions 6
FRAME............................................................................................................................7
SEAT .............................................................................................................................. 8
Seat width (SB) 8
Seat depth (ST) 8
Front seat height (SHv) 8
Rear seat height (SHh) 10
Seat angle (SW) 10
Tipping point adjustment 11
BACKREST...................................................................................................................12
Backrest height (RH) 13
Adjusting the backrest height 13
Securing/adjusting the release cord 13
Replacing the backrest tube 14
Replacing the handle 15
Replacing foldable push handles 15
Backrest angle (RW) 16
FOOTRESTS ...............................................................................................................17
Lower leg length (UL) 17
Replacing footrests 17
Adjusting the footrest height 17
Angle-adjustable footplate, adjusting the angle 17
SIDE PARTS .................................................................................................................18
Clothes-guard/mudguard 19
FRONT WHEELS.........................................................................................................21
Replacing a front wheel 21
Replacing a front wheel fork 21
REAR WHEELS ........................................................................................................... 22
Ensuring the rear wheels are parallel 22
Adjusting the removable axle 22
Changing the wheel chamber 22
BRAKES ....................................................................................................................... 23
Fitting / adjusting the parking brake 23
OPTIONS & ACCESSORIES...................................................................................... 24
Antitipper 24
Fitting the pelvic belt 25
Attaching the snap hook symbols 25

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KÜSCHALL K-SERIES attract
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Service Manual
GENERAL
Introduction
This service manual is part of the instructions and contains the tech-
nical information for servicing, configuring and repairing a küschall®
wheelchair.
WARNING!
Danger of accident and severe injuries.
If the wheelchair is improperly set it can cause
accidents and severe injuries.
▸Changes to the wheelchair may only be carried out
by the provider.
To guarantee the required safety and reliability, all wheelchairs must
be comprehensively checked once a year.
In part, assembly and adjustment require extensive experience.
For this reason, the following assembly instructions have been split
into three categories:
Requirement Symbol
Easy – technical understanding required 
Intermediate – specialist knowledge required 
Dicult – specialist wheelchair assembly knowledge
and experience required

The required tools and their respective sizes are listed above each
instruction. The instructions include information on the torques with
which the respective screw connections must be tightened. Adhering
to the given torques requires the use of a torque spanner.
Tools Symbol
Allen key Ã3, 4, 5
Phillips screwdriver Ò2
Straddle spanner 10, 11, 19
Socket spanner/ring spanner 8, 10
Spare parts and adaptations
All spare parts can be purchased from küschall®'s Customer Services.
An electronic spare parts catalog is available by logging onto www.
kuschall.com. Only original spare parts may be used. Installing additi-
onal adaptations to a küschall®wheelchair requires the prior written
approval of Küschall AG.
Tightening Allen screws
Allen keys are not designed for greater forces. When tightening or
loosening an Allen screw, it is therefore advisable to apply force to
the nut to prevent the hexagon socket from being damaged.
Tightening and loosening
Turn the nut with a socket spanner (only use a straddle spanner
if there is insucient space) and merely hold the screw tight with
the Allen key.

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Service Manual
Tightening and loosening if there is no nut
If an Allen screw is directly screwed into a screw thread, the screw must be tightened
using an Allen key.
iEnsure that the Allen key is of good quality and not worn.
Torque
All screw connections must be tightened with the torques specified in the following
instructions.
Checks
Visual check
Check all components for cracks, especially the areas around joints and welded seams.
Checking the screw connections
Check all bolts with the torques specified in the instructions regularly, and adjust if
required.
CAUTION!
Several screw connections have been secured with thread locking adhesive. If these are
opened, they must be secured again using new thread locking adhesive.
High-strength and low-strength adhesives are available. For torque entries notice shall be
made whether an adhesive and which adhesive needs to be used.
Identifying and alleviating malfunctions
Malfunction Possible cause Measure
The wheelchair will not
move in a straight line
Incorrect tire pressure in a rear wheel Correct tire pressure
One or more spokes broken Replace defective spoke(s)
Spoke unevenly tensioned Tighten excessively loose spokes
Dirty or damaged wheel bearings Clean or replace bearings
The wheelchair tips
backwards too easily
Rear wheels have been fitted too far forward Fit rear wheels further back
Backrest angle too great Reduce backrest angle
Seat angle too great Use longer vertical struts
The brakes engage poorly
or asymmetrically
Incorrect tire pressure in one or both rear wheels Correct tire pressure
Brake setting incorrect Correct brake setting
Roll resistance is too great Insucient tire pressure in the rear wheels Correct tire pressure
Rear wheels are not parallel Ensure that the rear wheels are parallel
The front wheels wobble
when moving fast
Insucient tension in the front wheel bearings block Lightly tighten the nut in the bearings
block axle
Front wheel is worn flat Replace front wheel
The front wheel is sti or
stuck Dirty or damaged bearings Clean or replace the bearings
Increased forward tip
tendency Frame deformed Replace frame

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Service Manual
OVERVIEW
OVERVIEW
Components
Dimensions
ASeat depth 375 – 475 mm, in increments of 25 mm)
BBackrest angle 74°/78°/82°/86°/90°
CKnee-to-heel length 400 – 480 mm, in increments of 10 mm
DSeat height front 480 – 510 mm, in increments of 10 mm
ESeat height rear 400 – 480 mm, in increments of 10 mm
FBackrest height 315 – 480 mm, in increments of 15 mm
GTotal length 75°: approx. 830 mm
90°: approx. 760 mm
HSeat width Seat width + 170 mm
ABackrest
BRear wheel with handrim
CQuick release axle
DFolding mechanism
EFront wheel fork with front wheel
FFootrest
GFrame
HSeat
IMudguard

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FRAME
The küschall K-Seriesattract frame is available in aluminium. Aluminium frames come
with frame angles of 75° and 90°.
Frame
Front seat
height (SHv) in
mm
(with a 24”rear
wheel)
Lower leg length
(UL) with standard-
mounted bar*
Seat depth
(ST)
Alu
75° standard 480 to 510 SHv -110 to SHv -30 375 to 475
90° standard 480 to 510 SHv -130 to SHv -40 375 to 475
*For lower leg lengths, the high-mounted footrest must be used.
Chapter: Footrests, "Assembling and adjusting high-mounted footrests"
FRAME

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SEAT
Seat width (SB)
Available seat widths: SB 360 to 480 in 20 mm steps.
Changing the seat width is very complicated and requires the replacement of numerous parts.
Seat depth (ST)
Available seat depths: ST 375 to 475 in 25 mm steps.
Changing the seat depth requires the replacement of the seat rails, the seat cover and potenti-
ally also the seat cushion.
Front seat height (SHv)
The front seat height is dependent on several factors that interact with each other. The size of
the rear wheels determines the height of the sub-structure. In addition to the positioning of
the brackets on the seat module, the frame, seat depth and rear seat height influence the seat
height.
Possible front and rear wheel combinations
Rear wheel Frame 4'' 5''
24" 75° A A
90° B -
iOnly select combinations listed in the Table to ensure that the frame is straight and the front wheel supports are perpendicular to the ground.
75°90°
4“5“
AB
SEAT

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SEAT
If the rear wheel, front wheel and front wheel fork are defined, the
front seat height can be adjusted by changing the position of the seat
module within the frame. There is 1 bracket available with 8 fixing
options.
Positioning or replacing the brackets at the front for
setting the front seat height (SHv)
Diculty:  Tools: Ã4, 5
Remove the rear wheels, fold the backrest forward and place the
wheelchair on its back.
Remove all screws on one side that hold the seat cover to remove
tension.
Loosen the screws Aand Bthat connect the seat brace Cto the
seat module or the frame on both sides.
Remove the screw Eand place it in the bracket’s Dother hole.
Refit the rear wheels, stand the wheelchair back
up and check the position of the seat braces C.
They must be as perpendicular to the ground as
possible.
Reattach the seat cover and tighten the screws.
Tighten the screw connections Aand Bof the
seat braces and Eand Fof the front brackets
again.
Carry out the same setting on both sides.
iNote: ensure that adjusting the front seat height results in a change to the seat angle. It may be
necessary to correspondingly adjust the rear seat
height (SHh) or the backrest angle.
1
2
3
4
5
6
7
8
Aà7 Nm
Bà13 Nm
Eà7 Nm
Fà7 Nm

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SEAT
Rear seat height (SHh)
The seat braces can be repositioned to adjust the rear seat height.
Generally, we recommend fixing the seat braces to the hole A on the
frame.
Following table serves as an example, the positions can vary.
Adjusting the rear seat height (SHh)
Diculty:  Tools: Ã5
Remove the rear wheels, fold the backrest
forward and place the wheelchair on its
back.
Remove all screws on one side that hold
the seat cover to remove tension.
Loosen the screw Afor the front bracket on
both sides.
Loosen the screw Cand remove the screws
Dand the connecting bar E.
Carry out the same setting on both sides.
Slide the seat brace against the rear bracket
so that the required holes overlap.
Insert the connecting bar Eand fix it with
screw D.
Refit the rear wheels, stand the wheelchair
back up and check the position of the seat
brace C. It must be as perpendicular to the
ground as possible.
Reattach the seat cover and tighten the screws.
Tighten the screws A, Cand D.
iNote: ensure that adjusting the rear seat height results in a change to the seat angle. It may be necessary to correspondingly adjust
the front seat height (SHv) or the backrest angle.
Seat angle (SW)
The seat angle is determined by the dierence between the rear seat
height (SHh) and the front seat height (SHv).
Rear seat height based on
wheel position
SHh
Hole
combination
400 A 1
410 A 2
420 A 3
430 A 4
440 A 5
450 A 6
460 A 7
470 B 7
480 C 7
Aà7 Nm
Cà13 Nm
Dà7 Nm
1
2
3
4
5
6
7
A
B
C

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Service Manual
SEAT
Tipping point adjustment
The tipping point of the wheelchair can be adjusted by changing the
horizontal position of the seat module.
Diculty:  Tools: Ã4, 5
Remove the rear wheels, fold the backrest forward
and place the wheelchair on its back.
Remove all screws on one side that hold the seat
cover to remove tension.
Loosen the screws A, Band E on both sides.
Remove the screws Cand Dand slide the seat
module forwards or backwards.
Reposition all screws (A, B, C, Dand E) but do
not tighten them.
Reattach the seat cover and tighten the screws.
Tighten all screws (A, B, C, Dand E) alternately
and uniformly on both sides.
There are 4 possible positions for the rear bracket and
4 possible positions for the front bracket.
Make sure to choose the corresponding position front to back.
iNote: ensure that the seat brace Fis as vertical as possible following an adjustment. Aà7 Nm
Bà7 Nm
Cà7 Nm
Dà7 Nm
Eà13 Nm

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BACKREST
BACKREST
The adjustable back is fitted with velcro bands and a cover. Apart
from the adjustable back there is the light cover, which is produced
individually for each backrest height (RH) and seat width (SB).
A 1-band strap Gis placed beneath the stabilizing bar if there is a
clothes-guard, and a 2-bands strap Hif there is a mudguard.
Backrest height (RH) to pushhandles, telescopic tubes and bands
RH
without pushhandles Cheight adjustable pushhandles,
rearset D
bands above
stabilizing bar
top
band
telescopic
tube bended
C
bands above
stabilizing bar
top
band
315 1-band GS1-band G
330 1-band G
endband, 10 cm F
S1-band G
345 1-band GS1-band G
10
cm
F
360 1-band GS1-band G
375 1-band GM2 x 1-band G
5 cm F
390 2 x 1-band GM2 x 1-band G
405 2 x 1-band GM2 x 1-band G
endband, 10 cm F
420 2 x 1-band GM2 x 1-band G
435 2-bands+1-band L 2 x 1-band G
450 2-bands+1-band L 2-bands+1-band
465 2-bands+1-band L 2-bands+1-band
480 2-bands+1-band L 2-bands+1-band
Backrest height (RH) to cover, backrest tube, pushhandles and bands
RH cover backrest
tube I
standard pushhandles A
foldable pushhandles B
pushhandle A
telescopic tube
straight B
bands above
stabilizing bar
top
band
315 S L S 1-band G
backrestband, 10 cm E
330 S L S 1-band G
345 M L S 1-band G
360 M L S 1-band G
375 M L S 2 x 1-band G
390 M L L 2 x 1-band G
405 M L L 2 x 1-band G
420 L L L 2-bands+1-band
435 L L L 2-bands+1-band
450 L L L 2-bands+1-band
465 L L L 2-bands+1-band
480 L L L 2 x 2-bands H
* RH 270 only for standard pushhandles

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BACKREST
Backrest height (RH)
The height of the backrest can be adjusted by moving the backrest
tube.
Adjusting the backrest height
Readjusting the push handle/telescopic tube
Diculty:  Tools: Ã3, 8
Remove the backrest padding.
Remove the screw connection Aand adjust the desired height of
the push handle or the telescopic tube. Insert the screw
connection Aagain and tighten the nut.
Carry out the same setting on both sides.
Refit the backrest padding.
iIf the desired height cannot be achieved, you must use a dierent telescopic tube or push handle.
Securing/adjusting the release cord
Diculty: 
WARNING!
Risk of injury to the user during use as a result of the backrest
folding over unintentionally.
If the release cord is too taut, the locking mechanism Bcan
open unintentionally.
Make sure that the release cord is not too taut.
Knot the release cord A, left and right, to the wire rings C
such that it is free from tension, but still ensuring that there is
only minimal slack (< 5 mm).
Aà7 Nm

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BACKREST
Replacing the backrest tube
Diculty:  Tools: Ã3, 4 8, 10
Remove the backrest padding.
Slide the backrest bands upwards or downwards to gain access to
the screws A. Remove the screws and nuts on both sides.
Remove the push handles or the telescopic tubes and remove the
upper Velcro®bands.
Remove the screws Bon the backrest joint.
Remove the lower Velcro®bands and the sleeve Dwith the
adjustment screw Efrom the backrest tube Cand fit both to the
new backrest tube.
Fit the backrest tube to the backrest joint with the screws B. Here,
first fit the lower screw followed by the upper screw.
Fit the upper Velcro®bands and the push handles or the
telescopic tubes again and fix them with screws Aand nuts.
Carry out the same setting on both sides.
Refit the backrest padding.
The excentre plates must be adjusted identically on both sides of
the wheelchair, Adjusting the backrest angle.
Check:
Check the settings of the adjustment screws Eon both sides. The
screw head must only lightly touch the seat module when the
backrest is in the upright position. If necessary, readjust the length by
releasing the counter nut and tightening or loosening the adjustment
screw. Then retighten the counter nut F.
Incorrectly adjusted adjustment screws result in damage to the
backrest joint’s mechanism, Adjusting the backrest joint.
Aà7 Nm
Bà7 Nm
Fà7 Nm

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Service Manual
BACKREST
Replacing the handle
An adhesive (e.g. hair spray) is used in these instructions. When
applied to the handle, this substance works as a lubricant and as an
adhesive once dry.
After drying, the adhesive used must be able to resist a pull-o
force of 750 N. If in doubt, contact Küschall®AG.
Diculty: 
Remove the old handle.
Remove any residue (residual adhesive, grease, dust) from the
push handle tube.
Apply a thin layer of hair spray all over the surface of the push
handle tube onto which the handle is to be slid.
Apply a thin layer of hair spray to the inside of the handle.
Slide the new handle onto the push handle tube.
Move the handle into the correct position (grooves facing
upwards).
i
If a long handle has been fitted and this is to be replaced with a
short one, the push handle tube must be shortened by 35 mm.
The push handle tube must be replaced when switching from a
short to a long handle.
Replacing foldable push handles
Diculty:  Tools: Hole punch pliers 6mm, Ã3, 4
Remove the old foldable push handle.
Pull down the backrest cover G on the telescopic tube, until its
hole B is uncovered.
IMPORTANT!
Make sure that the threaded insert F(part no. 1580450) supplied
with the new push handle is used for assembly.
Place the threaded insert Fin the telescopic tube.
Punch a hole through the backrest cover with a distance of
10 mm from the upper egde, using hole punch pliers (see graphic
below).
Slide the new foldable push handle Aonto the telescopic tube.
Fix the foldable push handle with screw C(M5x12).
Pull up the backrest cover, until it covers completely the rear hole
in the pushhandle.
Fix the foldable push handle with screw D(M5x14) and washer H.
Check screws Eon both sides of the push handle and re-tighten
if necessary.
Carry out the same steps for the other push handle.
IMPORTANT!
Make sure that the folding force is approximately 5 N (0.5 kg).
i
The retrofit of foldable push handles requires new tubing.
Cà3 Nm (low-strength)
Dà7 Nm (low-strength)
10 mm

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BACKREST
Backrest angle (RW)
The angle of the backrest can be changed by repositioning the
excentre plate in the backrest joint plate.
The following angles (measured from the seat) can be set:
Adjusting the backrest angle
Diculty:  Tools: Ã3, 10
Fold down the backrest and release the counter nut of the
adjustment screw Aand screw it in completely.
Remove the screw Bon the excentre plate C. Remove the
excentre plate and reinsert it in the desired position.
The excentre plates must be set identically on both sides of the
wheelchair.
Reinsert the screw Band tighten it.
Fold the backrest up until the stop bolts Dengage and unscrew
the adjustment screw Auntil it touches the frame and the
backrest joint no longer moves.
Tighten the counter nut E.
Adjusting the backrest joint
Diculty:  Tools: 10
Put the backrest up and let the pin Aengage.
Press the backrest forwards to ensure the joint cannot move.
Unscrew the screw Cuntil it touches the spigot Dof the seat
frame.
Screw the screw back in by between a ¼ and a ½ turn and
counter with the counter nut E.
Correctly adjust the backrest joint on both sides.
Function check:
Sit in the wheelchair and lean back so that the backrest is strained.
Upon pulling the release cord B, the pin Amust be easily removed
on both sides and must fully glide back in upon letting go of the
release cord.
86°
90°
78°
82°
82°
74°
74° 78° 82° 86° 90°
86°
90°
78°
82°
82°
74°
86°
90°
78°
82°
82°
74°
86°
90°
78°
82°
82°
74°
86°
90°
78°
82°
82°
74°
Bà4 Nm
Eà7 Nm
Eà7 Nm

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FOOTRESTS
FOOTRESTS
The footrest must be selected in accordance with the seat width.
A standard footrest and an angle-adjustable footrest are available.
Lower leg length (UL)
To change the lower leg length, the footrest can be fixed at a high-
er or lower position. Table, Chap. Frame. The shortest lower leg
lengths can be achieved using the high-mounted footrest. ‹Fitting
and adjusting high-mounted footrest›
Replacing footrests
Diculty:  Tools: Ã4, 8
Remove the screw connections Aon both sides.
Remove the footrest and replace it with a new one.
Tighten the screw connections Aon both sides.
Carry out the same setting on both sides.
Adjusting the footrest height
Diculty:  Tools: Ã4, 8
The height of the footrest can be adjusted in 10 mm steps.
Remove the screw connections Aon both sides.
Slide the footplate to the desired height.
Tighten the screw connections Aon both sides.
Carry out the same setting on both sides.
Angle-adjustable footplate, adjusting the
angle
Diculty:  Tools: Ã4, 10
To adjust the angle, release the four screw connections Auntil
the footplate can be moved.
Check and/or adjust the distance between the left and the right
sides by pushing in or pulling out the tubes below the footplate
in such a way that the bearings blocks are perpendicular to the
ground.
Tilt the footplate into the desired position and tighten the screw
connections A.
The angle of the footplate must be set so that the user’s feet
cannot slide o the plate.
Make sure that the footplate has a minimum distance of 20 mm to
the floor at its lowest point.
Aà4 Nm
Aà4 Nm
Aà13 Nm

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FOOTRESTS
Fitting and adjusting high-mounted footrest
Diculty:  Tools: Ã4, 5 8, 10
Fit the frame bar Dfor the high-mounted footrest to the front
frame on both sides using the screw connections A.
Fix the clamp set Cto both sides of the frame using the screw
connection B. Only tighten lightly.
Slide the high-mounted footplate Einto the clamp set and to the
desired height.
Tighten the screw connections Bon both sides.
Aà7 Nm
Bà7 Nm

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SIDE PARTS
SIDE PARTS
Fitting and adjusting a height-adjustable armrest
Diculty:  Tools: Ã4, 5, Ò2
Fit the holder Aand the bracket Bto the seat module on both
sides. Tighten the screws Conly lightly.
Fit the bar Dbetween the brackets Busing screws E.
Tighten the screws C.
To adjust the armrest height, insert the armrest Finto the
holder A.
Loosen the screws Gfor the height adjustment and slide it into
the desired position.
Then retighten the screws Gfor the height adjustment.
By tightening or loosening the screws H, you can adjust how
easily the armrest can be pulled out or pushed in.
Cà7 Nm
Eà7 Nm
Gà4 Nm

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SIDE PARTS
Clothes-guard/mudguard
The clothes-guard fitted as standard can be replaced by a mudguard. Clothes-
guard and mudguard are available in plastic or in carbon. For the carbon mudguard
there is an additional size (XL) for the two smallest rear seat hights (SHh).
Mudguard size plastic
Wheel size
SHh 24‘‘
400 L
410 M
420 M
430 M
440 M
450 M
460 M
470 M
480 M
L
Clothes-guard size
Wheel size
SHh 24‘‘
400 L
410 L
420 L
430 L
440 M
450 M
460 M
470 M
480 M
L
M
Mudguard size carbon
Wheel size
SHh 24‘‘
400 L
410 L
420 L
430 L
440 M
450 M
460 M
470 M
480 M
L