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.

3
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
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

4
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
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.

5
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
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

6
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
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

7
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
Service Manual
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

8
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
Service Manual
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

9
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
Service Manual
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

10
KÜSCHALL K-SERIES attract
© Küschall AG, Switzerland | 2014-12
Service Manual
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