Owner's Operator And Maintenance Manual
R
Invacare MX
DEALER: THIS MANUAL MUST BE GIVEN TO THE USER OF
THE WHEELCHAIR.
USER: BEFORE USING THIS WHEELCHAIR, READ THIS
MANUAL AND SAVE FOR FUTURE REFERENCE.
WARNING
WARNING
DO NOT OPERATE THIS EQUIPMENT WITHOUT
FIRST READING AND UNDERSTANDING THIS
MANUAL. IF YOU ARE UNABLE TO UNDERSTAND
THE WARNINGS, CAUTIONS, AND
INSTRUCTIONS, CONTACT A
HEALTHCARE PROFESSIONAL, DEALER OR A
WARNING
QUALIFIED TECHNICIAN BEFORE ATTEMPTING
TO USE THIS EQUIPMENT - OTHERWISE INJURY
OR DAMAGE MAY RESULT.
SAVE THESE INSTRUCTIONS
Invacare MX 2 Part No. 1119240
CONTENTS
TABLE OF CONTENTS
SPECIAL NOTES ............................................................................... 4
LABEL LOCATIONS .......................................................................... 5
SECTION 1 - GENERAL GUIDELINES ................................................. 6
STABILITY...................................................................................................................................................... 6
OPERATING INFORMATION............................................................................................................... 7
WEIGHT TRAINING ................................................................................................................................7
WEIGHT LIMITATION............................................................................................................................. 7
SAFETY/HANDLING OF WHEELCHAIRS .........................................................................................8
SECTION 2 - SAFETY INSPECTION ................................................. 13
SAFETY INSPECTION CHECKLIST ................................................................................................. 13
MAINTENANCE SAFETY PRECAUTIONS .................................................................................... 1 4
SECTION 3 - FRONT RIGGINGS ...................................................... 15
INSTALLING/REMOVING THE FOOTREST .................................................................................. 15
FOOTREST HEIGHT ADJUSTMENT ................................................................................................ 15
RAISING/LOWERING THE ELEVATING LEGREST ASSEMBLY ............................................. 16
CONTENTS
SECTION 4 - ARMS ........................................................................ 17
USING FLIP BACK ARMRESTS ........................................................................................................... 17
SECTION 5 - SEAT AND BACK ....................................................... 18
REPLACING BACK UPHOLSTERY ................................................................................................... 18
REPLACING SEAT UPHOLSTERY ..................................................................................................... 18
SECTION 6 - REAR WHEELS ........................................................... 19
REMOVING/INSTALLING THE REAR WHEELS .......................................................................... 19
SECTION 7 - FRONT CASTERS ....................................................... 20
ADJUSTING FORKS ............................................................................................................................... 20
REPLACING FRONT CASTERS ......................................................................................................... 21
SECTION 8 - WHEEL LOCKS ............................................................ 22
WHEEL LOCK ADJUSTMENT ........................................................................................................... 22
SECTION 9 - SEAT-TO-FLOOR HEIGHT ........................................... 23
CHANGING SEAT-TO-FLOOR HEIGHT ....................................................................................... 2 3
SECTION 10 - OPTIONS ................................................................. 24
INSTALLING THE SEAT POSITIONING STRAP ......................................................................... 2 4
NOTES ........................................................................................... 25
LIMITED WARRANTY .................................................................... 27
Part No. 1119240 3 INVACARE MX
SPECIAL NOTES
SPECIAL NOTES
SPECIAL NOTES
WARNING/CAUTION notices as used in this manual apply to hazards or
unsafe practices which could result in personal injury or property damage.
SPECIAL NOTES
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT
TO CHANGE WITHOUT NOTICE.
WHEELCHAIR USER
As a manufacturer of wheelchairs, Invacare endeavors to supply a wide
variety of wheelchairs to meet many needs of the end user. However, final
selection of the type of wheelchair to be used by an individual rests solely
with the user and his/her healthcare professional capable of making such a
selection.
This wheelchair has not been approved as a seat surface to be used within a
vehicle of any kind. Always transfer wheelchair user to an approved vehicle
seat with the appropriate restraints for this application.
Rear anti-tipper kit number 1058836 can be purchased for this wheelchair.
Invacare strongly recommends the use of rear anti-tippers as an additional
safeguard for the wheelchair user.
AS REGARDS TO RESTRAINTS - SEAT POSITIONING STRAPS - IT IS
THE OBLIGATION OF THE DME DEALER, THERAPISTS AND OTHER
HEALTHCARE PROFESSIONALS TO DETERMINE IF A SEATING RESTRAINT IS REQUIRED TO ENSURE THE SAFE OPERATION OF THIS
EQUIPMENT BY THE USER. SERIOUS INJURY CAN OCCUR IN THE
EVENT OF A FALL FROM A WHEELCHAIR. SEAT POSITIONING
STRAP KIT NUMBER 1004310 CAN BE PURCHASED FOR THIS WHEELCHAIR. INVACARE STRONGLY RECOMMENDS THE USE OF SEAT
POSITIONING STRAPS AS AN ADDITIONAL SAFEGUARD FOR THE
WHEELCHAIR USER.
INVACARE MX 4 Part No. 1119240
LABEL LOCATIONS
LABEL LOCATIONS
LABEL LOCATIONS
LABEL LOCATIONS
IMPORTANT NOTICE
The wheel locks on this wheelchair have been
pre-set at the factory to comply with the
Veterans Administration functional Standard
8320.01 of the Federal Register, paragraph
3.2.4.5.3. If these wheel locks do not meet
your needs, follow instructions below.
!
CAUTION
Any wheel lock adjustments should embed
wheel lock shoe at least 1/8" into tire when
locked (3/16" on pneumatic tires).
INSTRUCTIONS FOR WHEEL
LOCK ADJUSTMENTS
1. Loosen wheel lock mounting fastener,
which runs through mounting bracket and
frame.
2. Slide clamp toward rear wheel until wheel
lock shoe is embedded into tire material at
least 1/8" when handle is engaged to the
lock position (3/16" for pneumatic tires).
3. Tighten mounting fastener to secure
mounting bracket in desired location and
recheck lock shoe embedding.
4. Inspect for correct locking action BEFORE
actual use.
00078X021-0394
Crossmember
Lower Frame
Tube
Part No. 1119240 5 INVACARE MX
SECTION 1 GENERAL GUIDELINES
Section 1 - General Guidelines includes the following:
Stability
Operating Information
Weight Training
Weight Limitation
Safety/Handling of Wheelchairs
STABILITY
The position of the front casters, position of the rear wheels, as well as the
user condition directly relate to the stability of the wheelchair. Any change
GENERAL GUIDELINES
to one (1) or any combination of the three (3) may cause the wheelchair to
decrease in stability. These adjustments MUST be performed by a qualified
technician.
WARNING
Caster Position
Wheel Position
User Condition
Caster Position üü
GENERAL GUIDELINES
Wheel Position ü ü
User Condition ü ü
NOTE: When changes to the left hand column occur, follow across the chart and refer to the procedure
that is checked (ü) to maintain the proper stability, safety and handling of the wheelchair.
INVACARE MX 6 Part No. 1119240
OPERATING INFORMATION
ALL Warnings and cautions in this manual must be followed unless otherwise noted.
DO NOT TRAVERSE, CLIMB or GO DOWN ramps or slopes greater
than 9°.
DO NOT operate on roads, streets or highways.
DO NOT attempt to move up or down an incline with a water, ice or oil
film.
DO NOT attempt to ride over curbs or obstacles. Doing so may cause
your wheelchair to tip over and cause bodily harm to you or damage to
GENERAL GUIDELINES
the wheelchair.
DO NOT stand on the frame of the wheelchair.
DO NOT use the footplate as a platform. When getting in or out of the
wheelchair, make sure that the footplates are in the upward position.
ALWAYS use the handrims for self-propulsion. DO NOT grip the rear
wheels themselves.
SECTION 1GENERAL GUIDELINES
WARNING
GENERAL GUIDELINES
DO NOT use parts, accessories, or adapters other than those authorized
by Invacare.
WEIGHT TRAINING
Invacare DOES NOT recommend the use of its wheelchairs as a weight
training apparatus. Invacare wheelchairs have NOT been designed or
tested as a seat for any kind of weight training. If occupant uses said wheelchair as a weight training apparatus, Invacare shall NOT be liable for bodily
injury and the warranty is void.
WEIGHT LIMITATION
The Invacare MX wheelchair has a weight limitation of 250 lbs. (114 kg.).
Part No. 1119240 7 INVACARE MX
SECTION 1 GENERAL GUIDELINES
SAFETY/HANDLING OF WHEELCHAIRS
Safety and Handling of the wheelchair requires the close attention of the wheelchair user
as well as the assistant. This manual points out the most common procedures and techniques involved in the safe operation and maintenance of the wheelchair. It is important to
practice and master these safe techniques until you are comfortable in maneuvering around
the frequently encountered architectural barriers.
Use this information only as a basic guide. The techniques that are discussed on the
following pages have been used successfully by many users.
Individual wheelchair users often develop skills to deal with daily living activities that may
differ from those described in this manual. Invacare recognizes and encourages each individual to try what works best for him/her in overcoming architectural obstacles that they
GENERAL GUIDELINES
may encounter, however ALL WARNINGS and CAUTIONS given in this manual MUST be
followed. Techniques in this manual are a starting point for the new wheelchair user and
assistant with safety as the most important consideration for all.
STABILITY AND BALANCE
To assure stability and proper operation of your wheelchair, you must at all times maintain
proper balance. Your wheelchair has been designed to remain upright and stable during
normal daily activities as long as you do not move beyond the center of gravity.
GENERAL GUIDELINES
Virtually all activities which involve movement in the wheelchair have an effect on the center
of gravity. Invacare recommends using seat/chest positioning straps for additional safety while
involved in activities that shift your weight.
DO NOT lean forward out of the wheelchair any further than the length of the armrests.
Make sure the casters are pointing in the forward position whenever you lean forward. This
can be achieved by advancing the wheelchair and then reversing it in a straight line.
COPING WITH EVERYDAY OBSTACLES
Coping with the irritation of everyday obstacles can be alleviated somewhat by learning how to
manage your wheelchair. Keep in mind your center of gravity to maintain stability and balance.
A NOTE TO WHEELCHAIR ASSISTANTS
When assistance to the wheelchair user is required, remember to use good body mechanics.
Keep your back straight and bend your knees whenever tipping the wheelchair or traversing
curbs, or other impediments.
When learning a new assistance technique, have an experienced assistant help you before
attempting it alone.
INVACARE MX 8 Part No. 1119240
SECTION 1GENERAL GUIDELINES
WARNING
DO NOT attempt to lift the wheelchair by any removable (detachable)
parts. Lifting by means of any removable (detachable) parts of a wheelchair
may result in injury to the user or damage to the wheelchair.
Always verify that hand grips on the rear cane are secure PRIOR to use when an
assistant is used to propel or lift the chair. Check for any signs of looseness or
deterioration and if found, contact a qualified technician. DO NOT attempt to
move the wheelchair by pulling on the hand grips if they are found to be unsecure
or have deteriorated.
PERCENTAGE OF WEIGHT DISTRIBUTION
GENERAL GUIDELINES
GENERAL GUIDELINES
To determine and establish your particular safety limits, practice bending,
reaching and transferring activities in several combinations in the presence
of a qualified healthcare professional BEFORE attempting active use of the
wheelchair.
Many activities require the wheelchair owner to reach, bend and transfer in and out of the
wheelchair. These movements will cause a change to the normal balance, the center of
gravity, and the weight distribution of the wheelchair.
Proper positioning is essential for your safety. When reaching, leaning, or bending forward, it
is important to use the front casters as a tool to maintain stability and balance.
Reaching, Leaning and Bending - Forward.
DO NOT attempt to reach objects if
you have to move forward in the seat
or pick them up from the floor by
reaching down between your knees.
Position the front casters so that they are
extended as far forward as possible and
engage wheel locks.
WARNING
WARNING
Reaching, Leaning - Backwards.
WARNING
DO NOT lean over the top of the
back upholstery. This will change
your center of gravity and may cause
you to tip over.
Position wheelchair as close as possible to the
desired object. Point front casters forward to
create the longest possible wheelbase. Reach
back only as far as your arm will extend
without changing your sitting position.
Part No. 1119240 9 INVACARE MX
SECTION 1 GENERAL GUIDELINES
TIPPING
When tipping the wheelchair, an assistant should grasp the back of the wheelchair on a nonremovable (non-detachable) part. Inform the wheelchair occupant before tipping the wheelchair and remind him/her to lean back. Be sure the occupants feet and hands are clear of all
wheels and/or pinch points.
After mastering the techniques of tipping the wheelchair, use the following method to
tackle curbs, short stairs, etc.
TIPPING - CURBS:
GENERAL GUIDELINES
Place foot on the step tube and begin to
tilt the wheelchair toward you. Apply a
continuous downward motion until the
balance point is achieved and the front
casters clear the curb. At this point, the
assistant will feel a difference in the
weight distribution.
When lowering the front casters of
the wheelchair, DO NOT let the
wheelchair drop the last few inches
to the ground. This could result in
injury to the occupant and/or damage to the wheelchair.
WARNING
DO NOT tip the wheelchair without assistance.
WARNING
Step Tube
METHOD 1 - WHEELCHAIR WITH
STEP TUBES
GENERAL GUIDELINES
Roll the wheelchair forward and slowly lower the front of the wheelchair in one continuous
movement onto the sidewalk. Do not let the wheelchair drop the last few inches to the
ground. This could result in injury to the occupant. Push the wheelchair forward until the
rear wheels roll up and over the curb.
ESCALATORS? SORRY!
DO NOT use an escalator to move a wheelchair between floors. Serious
bodily injury may occur.
STAIRWAYS? SORRY!
DO NOT carry an occupied wheelchair up a stairway. Serious bodily injury
may occur.
INVACARE MX 10 Part No. 1119240
SECTION 1 GENERAL GUIDELINES
TRANSFERRING TO AND FROM OTHER SEATS
WARNING
BEFORE attempting to transfer in or
out of the wheelchair, every precaution should be taken to reduce the
gap distance. Turn both casters parallel to the object you are transferring
onto. Also be certain the wheel locks
are engaged to help prevent the
wheels from moving.
GENERAL GUIDELINES
When transferring, position yourself
as far back as possible in the seat. This
will help prevent broken screws,
damaged upholstery and the possibility of the wheelchair tipping forward.
NOTE: This activity may be performed independently provided you have adequate mobility and upper
body strength.
Position the wheelchair as close as possible along side the seat to which you are transferring,
with the front casters pointing parallel to it. Remove or flip up the armrest. Engage wheel
locks. Shift body weight into seat with transfer.
GENERAL GUIDELINES
CAUTION
During independent transfer, little or no seat platform will be beneath you. Use a transfer
board if at all possible.
UNFOLDING AND FOLDING THE WHEELCHAIR
WARNING
Keep hands and fingers clear of moving parts to avoid injury.
DO NOT sit or transfer into the wheelchair unless it is fully open and the seat
frame rails are fully seated into the side frame H-blocks.
Unfolding.
1. Open the wheelchair by grasping the back cane of the wheelchair closest to you.
2. Tilt the wheelchair towards you (raising the opposite wheel and caster off the ground/
floor).
3. Push downward on the TOP of the seat rail closest to you where the seat upholstery is
attached until the wheelchair is fully open.
4. Engage both wheel locks, open the footrest/legrest for clearance and transfer into the
wheelchair. Refer to TRANSFERRING TO AND FROM OTHER SEATS in this section
of the manual.
Part No. 1119240 11 INVACARE MX
SECTION 1 GENERAL GUIDELINES
Folding.
1. Swing footrest/legrest and calfpads (if equipped) in locked position to the front of
the wheelchair.
2. Pivot footplates upward to vertical position.
3. With both hands, grasp the middle of the seat upholstery at the front and back edge
and lift up.
4. Continue to close the wheelchair by grasping the back cane furthest from you and
pulling the armrest towards you.
GENERAL GUIDELINES
GENERAL GUIDELINES
UNFOLDING
Press DOWN
On Seat Rail
FOLDING
INVACARE MX 12 Part No. 1119240
Section 2 - Safety Inspection includes the following:
Safety Inspection Checklist
SECTION 2SAFETY INSPECTION
Maintenance Safety Precautions
NOTE: Every six (6) months or as necessary, take your wheelchair to a qualified technician for a thorough
inspection and servicing. Regular cleaning will reveal loose or worn parts and enhance the smooth operation of your wheelchair. To operate properly and safely, your wheelchair must be cared for just like any
other vehicle. Routine maintenance will extend the life and efficiency of your wheelchair.
SAFETY INSPECTION CHECKLIST
Initial adjustments should be made to suit your personal body structure needs and preference.
Thereafter follow these maintenance procedures:
ITEM Initially Weekly Monthly Periodically
SAFETY INSPECTION
GENERAL
Wheelchair rolls straight (no excessive drag or pull to one side). X X
Inspect for loose/missing/broken hardware in all locations. X X
FRAME AND CROSSBRACES
Inspect for bent frame or crossbraces. X X
WHEEL LOCKS
Do not interfere with tires when rolling. X X
Pivot points free of wear and looseness. X X
Wheel locks easy to engage. X X
Wheel locks prevent wheelchair from moving when engaged. X X
SEAT AND BACK
Inspect upholstery for rips or sagging. X X
Inspect for loose or broken hardware. X X
Inspect cane hand grips for wear/looseness/deterioration. X X
TIRES
Inspect for flat spots, cracks and wear. X X
CAUTION: As with any vehicle, the wheels and
tires should be checked periodically for cracks and
wear, and should be replaced if damaged.
REAR WHEELS
No excessive side movement or binding when lifted and spun. X X
Inspect wheels for cracks and wear (hub and rim). X X
Inspect for cracked, bent or broken spokes. X X
HANDRIMS
Inspect for signs of rough edges or peeling. X X
FRONT CASTERS/FORKS
Inspect wheel/fork assembly for proper tension by
spinning caster; caster should come to a gradual stop. X X
Adjust bearing system if wheel wobbles noticeably or
binds to a stop. Ensure wheel bearings are clean and
free of moisture. X X
Check headtube locknuts for tightness. X X
Inspect casters for cracks and wear (hub and rim). X X
Inspect for cracked or broken spokes. X X
CAUTION: As with any vehicle, the wheels and
tires should be checked periodically for cracks and
wear, and should be replaced if damaged.
CLEANING
Clean upholstery and armrests. X X
SAFETY INSPECTION
Part No. 1119240 13 INVACARE MX
SECTION 2 SAFETY INSPECTION
MAINTENANCE SAFETY PRECAUTIONSMAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONSMAINTENANCE SAFETY PRECAUTIONS
Unless otherwise noted, all service adjustments should be performed while
the wheelchair is unoccupied.
After ANY adjustments, repair or service and BEFORE use, make sure all
attachment hardware is tightened securely - otherwise, injury or damage
may result.
When cleaning rear cane or hand grip areas use only a clean towel lightly
dampened with cool water. Verify that grips are dry prior to use. DO NOT
SAFETY INSPECTION
use soap or ammonia based cleaning solutions otherwise the hand grips will
slide off the cane assembly. Failure to observe this warning may result in
injury to the user or bystanders.
DO NOT overtighten hardware attaching to the frame. This could cause
damage to the frame tubing.
WARNING
SAFETY INSPECTION
CAUTION
INVACARE MX 14 Part No. 1119240
FRONT RIGGINGS
Section 3 - Front Riggings includes the following:
Installing/Removing the Footrest
Footrest Height Adjustment
SECTION 3
Raising/Lowering the Elevated Legrest Assembly
INSTALLING/REMOVING THE FRONT RIGGINGS
(FIGURE 1)
NOTE: This procedure applies to the swingaway front riggings and the elevating front riggings.
INSTALLING
FRONT RIGGINGS
1. Turn the front rigging to the side (open footplate is perpendicular to wheelchair).
2. Install the front rigging hinge plates onto the hinge pins on the wheelchair frame.
3. Push the front rigging towards the inside
NOTE: The footplate will be on the inside of the
wheelchair when locked in place.
4. Repeat STEPS 1 - 3 for the opposite side
5. To release the front rigging, push the
REMOVING
1. Push the rigging release lever inward and
2. Lift up on front rigging and remove from
of the wheelchair until it locks into place.
of wheelchair.
footrest release lever inward, rotate
footrest outward.
rotate the front rigging outward.
wheelchair.
Front Rigging
Release
Lever
Hinge Pins
Front Rigging
Hinge Plates
Swingaway
Footrest
Assembly
Footplate
FIGURE 1 - INSTALLING/
REMOVING THE FRONT
RIGGINGS
FRONT RIGGINGS
3. Repeat STEPS 1-2 for the opposite side of the wheelchair.
FOOTREST HEIGHT ADJUSTMENT (FIGURE 2)
NOTE: This procedure applies to the swingaway footrest and
elevating legrest.
1. Loosen, but do not remove the bolt and locknut
that secure the lower footrest assembly to the
upper footrest support.
2. Reposition the lower footrest assembly to the
desired height.
Footrest
Support
3. Securely tighten lug bolt and locknut that secure
the lower footrest to the footrest support.
4. Repeat STEP 1-3 for the opposite side of
wheelchair, if necessary
Part No. 1119240 15 INVACARE MX
FIGURE 2 - FOOTREST HEIGHT
ADJUSTMENT
Bolt and Locknut
Lower
Footrest
SECTION 3 FRONT RIGGINGS
.
RAISING/LOWERING THE ELEVATING LEGREST
ASSEMBLY (FIGURE 3)
1. To raise the elevating legrest, the assistant or user should grab hold of the support
2. To lower the elevating legrest, perform the following:
FRONT RIGGINGS
FRONT RIGGINGS
tube and raise elevating legrests until the desired height is obtained.
A. Support user leg with one (1) hand.
B. Push release lever downward with other hand.
C. Gently, lower user leg down and rest against the legrest.
Legrest Release Lever
Support Tube
FIGURE 3 - RAISING/LOWERING THE ELEVATING LEGREST ASSEMBLY
INVACARE MX 16 Part No. 1119240
Section 4 - Arms includes the following:
Using Flip Back Armrest
USING FLIP-BACK ARMREST (FIGURE 1)
WARNING
SECTION 4ARMS
ARMS
DO NOT operate flip-back armrest when wheelchair is folded - otherwise
injury or damage may result.
Ensure armrest is securely locked into arm socket and armrest release button
locks into place BEFORE using.
1. Push down on front of armrest to
ensure it is fully seated in front socket.
NOTE: This step is needed to prevent the
Armrest Release
Button
release button from hanging up on the
socket.
2. Press in armrest release button
located on armrest front tube.
3. Rotate front of armrest UP and
OUT of arm socket.
Armrest Rear
Tube
Armrest Front
Tube
Arm Socket
NOTE: Armrest can rotate back approximately 90°.
FIGURE 1 - USING FLIP-BACK ARMREST
4. To prepare armrest for use, rotate
armrest downward, making sure
front tube of armrest inserts into
arm socket.
ARMS
5. Push armrest down until release button snaps into arm socket.
6. Ensure armrest is securely locked into arm socket and armrest release button locks into
place BEFORE using.
Part No. 1119240 17 INVACARE MX
Section 5 - Seat and Back includes the following:
Replacing Back Upholstery
SEAT AND BACKSECTION 5
SEAT AND BACK
Replacing Seat Upholstery
REPLACING BACK UPHOLSTERY (FIGURE 1)
1. Remove the eight (8) phillips screws and eight (8) washers that secure the existing
back upholstery to the back canes.
2. Remove existing back upholstery from the back canes.
3. Securely tighten the new back upholstery to the back canes with the phillips screws
and washers.
Back Canes
Back Upholstery
Washers
Phillips
Screws
FIGURE 1 - REPLACING BACK UPHOLSTERY
Washers
SEAT AND BACK
REPLACING SEAT UPHOLSTERY (FIGURE 2)
1. Remove the eight (8) phillips screws and eight (8) washers that secure the existing
seat upholstery to the crossbraces.
2. Remove the EXISTING seat upholstery from the crossbraces.
3. If used, ensure position of seat positioning strap. Refer to INSTALLING THE SEAT
POSITIONING STRAP in SECTION 10 of this manual.
4. Install NEW seat upholstery by reversing STEPS 1-2.
Phillips Screws
Seat Upholstery
FIGURE 2 - REPLACING SEAT UPHOLSTERY
INVACARE MX 18 Part No. 1119240
SEAT AND BACK
REAR WHEELS SECTION 6
Section 6 - Rear Wheels includes the following:
Removing/Installing the Rear Wheels
REMOVING/INSTALLING THE REAR WHEELS (FIGURE 1)
REAR WHEELS
WARNING
If a change in the SEAT-TO-FLOOR HEIGHT is desired, this procedure
MUST be performed by a qualified technician.
Make sure both rear wheels are the same size and are installed into the
same respective mounting hole BEFORE using the wheelchair, otherwise
injury may occur.
1. Remove the dust cap, hex screw, washer, spacer and locknut that secure the rear
wheel to the wheelchair frame.
2. Repeat STEP 1 for the opposite rear wheel.
3. To reinstall the rear wheel(s) onto the wheelchair, reverse STEPS 1-2. Torque down
locknut to 40 FT-LBS.
4. Adjust wheel locks. Refer to WHEEL LOCK ADJUSTMENT in SECTION 8 of this
manual.
Locknut
Wheelchair Frame
Spacer
Rear Wheel
Dust Cap
Axle Mounting Hole
Hex Screw
FIGURE 1 - REMOVING/INSTALLING THE REAR WHEELS
Part No. 1119240 19 INVACARE MX
FRONT CASTERSSECTION 7
Section 7 - Front Casters includes the following:
Adjusting Forks
Replacing Front Casters
ADJUSTING FORKS (FIGURE 1)
1. To properly tighten caster journal system and guard against flutter, perform the following check:
A. Tip back of wheelchair to floor.
B. Pivot both forks and casters to top of their arc simultaneously.
FRONT CASTERS
FRONT CASTERS
C. Let casters drop to bottom of arc (wheels should swing once to one-side, then
immediately rest in a straight downward position).
D. Adjust locknuts according to freedom of caster swing.
E. Repeat STEPS C-D until wheels swing once to one-side.
F. Return wheelchair to an upright position.
2. Test wheelchair for maneuverability.
3. Readjust locknuts if necessary, and repeat STEPS 1-2 until correct.
4. Snap dust cover over the locknut and stem.
Dust Cover
Locknut
Nylon Washer
Caster Headtube
Fork Assembly
FIGURE 1 - ADJUSTING FORKS
INVACARE MX 20 Part No. 1119240
FRONT CASTERS
SECTION 7FRONT CASTERS
REPLACING FRONT CASTERS (FIGURE 2)
WARNING
Make sure both front casters are the same size and are installed into the
same respective mounting hole BEFORE using the wheelchair, otherwise
injury may occur.
1. Remove the hex screw, washers and locknut that secure the front caster to the fork.
NOTE: Washers are only used with casters with precision bearings.
2. To reinstall the new front caster onto the fork, reverse STEP 1.
FRONT CASTERS
Fork
Hex Screw
Washer (if applicable)
Locknut
Front Caster
FIGURE 2 - REPLACING FRONT CASTERS
Washer (if applicable)
Part No. 1119240 21 INVACARE MX
Section 8 -Wheel Locks includes the following:
Wheel Lock Adjustment
WHEEL LOCK ADJUSTMENT (FIGURE 1)
WHEEL LOCKSSECTION 8
DO NOT attempt to stop a moving wheelchair with the wheel locks.
WHEEL LOCKS ARE NOT BRAKES.
1. Disengage the wheel locks.
WHEEL LOCKS
2. Loosen the bolt and locknut that secure the wheel lock to the wheelchair frame.
3. Reposition the wheel lock so that when engaged, the wheel lock shoe embeds the
tire 1/8-inch and HOLDS the occupied wheelchair in place when pushed.
4. Securely tighten the bolt and locknut securing the wheel lock to the wheelchair
frame.
5. Engage the wheel lock.
6. Measure the distance the wheel lock is embedded into the tire as shown in DETAIL
"A" of FIGURE 1.
NOTE: Any wheel lock adjustment should embed the wheel lock shoe at least 1/8-inch into the tire
when engaged.
7. Repeat STEPS 1-6 until the wheel lock shoe embeds the tire 1/8-inch (and HOLDS
the occupied wheelchair in place when pushed.
WARNING
ANTI-TIPPERS/
WHEELOCKS
8. Repeat STEPS 1-7 for the opposite wheel lock.
9. If the measurement of 1/8-inch can not be achieved, remove the bolt and locknut
that secure the wheel lock to the wheelchair frame and mount the wheel lock in one
(1) of two (2) mounting positions.
10. Repeat STEPS 1-9 until the wheel lock HOLDS the occupied wheelchair in place
when pushed. If the correct measurement still cannot be achieved, contact a qualified technician.
DETAIL "A" - WHEEL LOCK
SHOE ENGAGEMENT
1/8-inch
Wheel Lock
Shoe
Tire
Mounting Positions
Wheel
Lock
Rear
Wheel
Tire
Bolt and Locknut
Wheel Lock
Handle
Wheel
Lock Shoe
FIGURE 1 - WHEEL LOCK ADJUSTMENT
INVACARE MX 22 Part No. 1119240
SEAT-TO-FLOOR HEIGHT SECTION 9
Section 9 - Seat-to-Floor Height includes the following:
Changing Seat-To-Floor Height
CHANGING SEAT-TO-FLOOR HEIGHT (FIGURE 1)
Seat-to-floor heights have specific positions depending on rear wheel size,
rear wheel position, and front caster position. These adjustments MUST
be performed by a qualified technician.
1. Refer to the following chart in FIGURE 1 to determine mounting positions for front
casters/forks and rear wheels for the desired obtainable seat-to-floor height.
SEAT TO FLOOR HEIGHT
2. Remove the rear wheels from the wheelchair. Refer to REMOVING/INSTALLING
THE REAR WHEELS in SECTION 6 of this manual.
3. Remove the front casters from the wheelchair. Refer to REPLACING FRONT
CASTERS in SECTION 7 of this manual.
4. Reinstall the rear wheels onto the wheelchair in the mounting position indicated in
the chart. Refer to REMOVING/INSTALLING THE REAR WHEELS in SECTION 6
of this manual.
5. Re-install the front casters onto the wheelchair in the mounting position indicated in
the chart. Refer to REPLACING FRONT CASTERS in SECTION 7 of this manual.
SEAT-TO-FLOOR HEIGHT
WARNING
8-INCH FRONT CASTERS
SEAT-TO-FLOOR FRONT CASTER REAR REAR WHEEL
HEIGHT MOUNTING WHEEL MOUNTING
(in inches) POSITION SIZE POSITION
17-1/2 TOP 24-inch TOP
19-1/2 BOTTOM 24-inch BOTTOM
REAR WHEEL MOUNTING
POSITIONS
TOP
BOTTOM
MOUNTING POSITIONS
FORK
TOP
MIDDLE
BOTTOM
FIGURE 1 - CHANGING SEAT-TO-FLOOR HEIGHT
Part No. 1119240 23 INVACARE MX
SECTION 10 OPTIONS
SECTION 10 - Options includes the following:
Installing Seat Positioning Strap
INSTALLING SEAT POSITIONING STRAP (FIGURE 1)
1. Remove the bottom back upholstery screw from the wheelchair.
2. Position the seat positioning strap half between the back cane and back upholstery.
3. Secure the back upholstery and seat positioning strap to the wheelchair with the
OPTIONS
4. Repeat STEP 1 - 3 for the opposite side of the wheelchair.
existing back upholstery screw.
Back
Upholstery
Screw
Back Cane
SEAT POSITIONING
STRAP
Back Upholstery
Seat Positioning Strap
FIGURE 1- INSTALLING THE SEAT POSITIONING STRAP
INVACARE MX 24 Part No. 1119240
NOTES
NOTES
NOTES
Part No. 1119240 25 INVACARE MX
NOTES
NOTES
NOTES
INVACARE MX 26 Part No. 1119240
WARRANTY
LIMITED WARRANTY
PLEASE NOTE: THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH
FEDERAL LAW APPLICABLE TO PRODUCTS MANUFACTURED AFTER JULY 4, 1975.
This warranty is extended only to the original purchaser/user of our products.
This warranty gives you specific legal rights and you may also have other legal rights which
vary from state to state.
Invacare warrants its product to be free from defects in materials and workmanship for a
period of one (1) year from date of purchase. The side frames and crossmembers are
warranted to be free from defects in materials and workmanship of the original purchaser/
users for a period of three (3) years. If within such warranty period any such product shall
be proven to be defective, such product shall be repaired or replaced, at Invacares option.
This warranty does not include any labor or shipping charges incurred in replacement part
installation or repair of any such product. Invacares sole obligation and your exclusive
remedy under this warranty shall be limited to such repair and/or replacement.
For warranty service, please contact the dealer from whom you purchased your Invacare
product. In the event you do not receive satisfactory warranty service, please write directly
to Invacare at the address at the bottom of this page. Provide dealers name, address, the
product model number, date of purchase, indicate nature of the defect and, if the product
is serialized, indicate the serial number. Do not return products to our factory without our
prior consent.
LIMITATIONS AND EXCLUSIONS: THE FOREGOING WARRANTY SHALL NOT
APPLY TO SERIAL NUMBERED PRODUCTS IF THE SERIAL NUMBER HAS BEEN
REMOVED OR DEFACED, PRODUCTS SUBJECTED TO NEGLIGENCE, ACCIDENT,
IMPROPER OPERATION, MAINTENANCE OR STORAGE, PRODUCTS MODIFIED
WITHOUT INVACARES EXPRESS WRITTEN CONSENT INCLUDING, BUT NOT
LIMITED TO, MODIFICATION THROUGH THE USE OF UNAUTHORIZED PARTS OR
ATTACHMENTS; PRODUCTS DAMAGED BY REASON OF REPAIRS MADE TO ANY
COMPONENT WITHOUT THE SPECIFIC CONSENT OF INVACARE, OR TO A PRODUCT DAMAGED BY CIRCUMSTANCES BEYOND INVACARES CONTROL, AND
SUCH EVALUATION WILL BE SOLELY DETERMINED BY INVACARE. THE WARRANTY SHALL NOT APPLY TO PROBLEMS ARISING FROM NORMAL WEAR OR
FAILURE TO ADHERE TO THESE INSTRUCTIONS.
THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IN LIEU OF ANY
OTHER WARRANTIES WHATSOEVER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, AND THE SOLE REMEDY FOR VIOLATIONS OF ANY
WARRANTY WHATSOEVER, SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF
THE DEFECTIVE PRODUCT PURSUANT TO THE TERMS CONTAINED HEREIN. THE
APPLICATION OF ANY IMPLIED WARRANTY WHATSOEVER SHALL NOT EXTEND
BEYOND THE DURATION OF THE EXPRESS WARRANTY PROVIDED HEREIN.
INVACARE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL
DAMAGES WHATSOEVER.
THIS WARRANTY SHALL BE EXTENDED TO COMPLY WITH STATE/PROVINCIAL
LAWS AND REQUIREMENTS.
WARRANTY
Part No. 1119240 27 INVACARE MX
Invacare Corporation www.invacare.com
USA Canada
One Invacare Way 570 Matheson Blvd E Unit 8 Invacare is a registered
Elyria, Ohio USA Mississauga Ontario trademark of Invacare Corporation.
44036-2125 L4Z 4G4 Canada Yes, you can. is a trademark of Invacare
800-333-6900 800-668-5324 Corporation.
MADE IN MEXICO
© 2003 Invacare Corporation
Part No. 1119240 Rev A 03/03
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