Yamaha JWX-1 User manual

2

Table of Contents
1. Please read before use 1
1.1. Foreword 1
1.2. Symbols Used in This Manual 1
1.3. Operation Diagnosis Check 2
1.4. Assistive Operation Diagnosis Check 3
1.5. Warnings and Notes for the Operation 4
1.6. Warning Label Location Diagram 26
2. Names of Parts 27
2.1. JWX-1 24" 27
2.2. JWX-1 16" 28
2.3. Controller 29
2.4. Assistant Controller (Optional) 29
2.5. Nickel Metal Hydride Battery (JWB2) 30
2.6. Nickel Metal Hydride Battery Charger (JWC-2) 31
2.7. Lithium Ion Battery (ESB1) 32
2.8. Lithium Ion Battery Charger (ESC1) 33
3. Before Sitting in the Wheelchair 34
3.1. Inspecting the Wheelchair 34
3.2. Checking Your Clothing 37
3.3. Checking the Residual Capacity of the Battery and
Installing the Battery on the Wheelchair 37
4. Riding the Wheelchair 39
4.1. Sitting in the Wheelchair 39
4.2. Moving the Wheelchair 40
4.3. Adjusting and Confirming the Maximum Speed 41
4.4. Checking the Residual Capacity of the Battery
during Operation 42
4.5. Other Functions 42
4.6. Practicing Basic Operations 43

5. After You are Finished Riding the Wheelchair 45
5.1. Getting out of the Wheelchair 45
5.2. Removing the Battery 46
6. How to Use the Assistant Controller 47
6.1. Getting in the Wheelchair 47
6.2. Starting Assistant Travel Mode 47
6.3. After Assistant Operations are Finished 50
7. Handling the Batteries and Chargers 51
7.1. Types of Batteries 51
7.2. Maintenance 51
7.3. Warnings and Notes for Battery Handling 52
8. Nickel Metal Hydride Battery and Charger 55
8.1. Features of the Nickel Metal Hydride Battery (JWB2) 55
8.2. How to Use the Nickel Metal Hydride Battery (JWB2) 55
8.3. Characteristics and Handling of the Nickel Metal
Hydride Battery (JWB2) 56
8.4.
How to Charge the Nickel Metal Hydride Battery (JWB2) 58
8.5. Refresh Charging the Nickel Metal Hydride Battery
(JWB2) 60
8.6. The Temperature of the Nickel Metal Hydride Battery
(JWB2) during Charging 61
8.7. Charger (JWC-2) Indicator Lamps 62
9. Lithium Ion Battery and Charger 63
9.1. Features of the Lithium Ion Battery (ESB1) 63
9.2. How to Use the Lithium Ion Battery (ESB1) 63
9.3. Characteristics and Handling of the Lithium Ion
Battery (ESB1) 64
9.4. How to Charge the Lithium Ion Battery (ESB1) 67
9.5. The Temperature of the Lithium Ion Battery (ESB1)
during Charging 69
9.6. Charger Indicator Lamps 69

10. Wheelchair Transporting and Storing Instructions 70
10.1. Loading the Wheelchair in a Car 70
10.2.Unloading the Wheelchair from a Car 72
10.3.Storing the Wheelchair 73
10.4.Boarding an Airplane 74
11. Using the Wheelchair more Comfortably 75
11.1. Removing and Installing the Unit 75
11.2.Anti-tip Device 77
11.3.Controller 79
11.4.Assistant Controller (Optional) 82
11.5.Setting Parameters 82
12. Maintenance, Daily Check, Periodic Inspection 84
12.1. Maintenance 85
12.2.Daily Checks 87
12.3.Quit to use JWX-1 and Recycling 87
13. Dimensions and Specifications 88
14. Troubleshooting 90
14.1. Before Requesting Repairs 90
14.2.Requesting Repairs and Inspections 93
14.3.Serial Number Location 93
14.4.Warranty 93

Introduction
This is a manual for the “JWX-1” electric power unit for wheelchairs. Before you read this manual,
check which product you are using.
This product consists of the left and right drive units, the joystick-equipped controller, the battery
and charger, and the optional assistant controller. These components, except for the battery
and charger, are already installed to the wheelchair frame. For the initial use, the customer does
not have to use tools, and so on, to assemble the wheelchair. Refer to “2. Names of Parts” to
ensure that these components are installed to the wheelchair that you purchased and that the
battery and charger are included. If you visually notice that any of these components are not
installed, are not included, or are damaged before using the wheelchair, immediately contact
the dealer without using the wheelchair.
JWX-1 24"
JWX-1 16"
For information for operating the wheelchair frame and warranty for the frame with which you
are using the JWX-1, see the frame manual.

1
1
TIP
1. Please read before use
1.1. Foreword
Thank you for purchasing the JWX-1.
Generally speaking, riding in a wheelchair incurs the possible risk of personal injury or damage to
the wheelchair from improper use. Depending on the type or extent of the disabilities of the user,
it might be dangerous to travel unaccompanied.
Before using the wheelchair, be sure that not only the user, but also the assistant and controller,
has read this manual to assure full understanding.
(1) The wheelchairs on which the JWX-1 has been installed are wheelchairs for physically
handicapped people, and their legal status is that of a pedestrian. Make sure to adhere to
the traffic rules and manners of a pedestrian.
(2) The JWX-1 24" withstands a load of 125 kg. Use with a total maximum load including the
chairframe weight of 125 kg. The JWX-1 16" withstands a load of 100 kg. Use with a maxi-
mum load of 100 kg. If the frame on which the JWX-1 is installed has an even lighter load
capacity, ensure that you do not exceed that value.
(3) To ensure safe use, warning labels are affixed to this product. Make sure to adhere to the
warning labels. Refer to “1.6. Warning Label Location Diagram” for the locations of the warning
labels.
(4) Do not use this product for any purpose other than as an electric wheelchair.
(5) Some of the illustrations in this manual are images of general electric wheelchairs. The
actual product may be different than that shown.
1.2. Symbols Used in This Manual
NOTICE
Indicates that misuse may lead to material damage.
WARNING
Indicates that misuse may lead to fatal or severe injury, or
disability.
Indicates things you must not do.
Indicates correct methods and key points when operating
the product.
Indicates safety-related cautionary information.

2
1
1.3. Operation Diagnosis Check
You can travel unaccompanied. For your safety, remember to travel carefully.
In situations such as those mentioned in the warnings in 1.5. Warnings and Notes for the Op-
eration, be sure to have an assistant accompany you, and pay sufficient attention to safety
while traveling.
(1) Are you able to
move the joystick
and switches on the
controller at your
own will?
(2) Are you able to cor-
rectly perceive visu-
ally the conditions of
the road surface and
your surroundings,
and avoid dangerous
areas?
Diagnosis Check 1
Depending on the extent of your disabilities, it may be dangerous to travel unaccompanied. Use
this diagnosis check as a guide to determine whether or not you can travel unaccompanied.
Can operate
both.
Have trouble op-
erating one or
both.
Use this product by hav-
ing an assistant provide
assistive operation.
Diagnosis Check 2
(1) Are you able to op-
erate the parking
brakes and clutch
levers?
(2) Are you able to get
in and out of the
wheelchair, and to
replace the bat-
tery?
Have an assistant ac-
company you.
Can operate
both.
Have trouble op-
erating one or
both.

3
1
WARNING
LBefore using the wheelchair, be sure to assess
your competence and determine whether or not
you need an assistant.
Moreover, in determining the necessity of an as-
sistant, consult expert opinions as a point of refer-
ence.
If your judgment is based solely on your own
opinion, you or other people around you may get
injured.
Expert
(1) Are you able to correctly perceive the conditions of
the road surface and your surroundings, and avoid
dangerous areas?
(2) Are you able to assist the user to get on and off the
wheelchair, and to replace the battery?
(3) Are you able to provide assistive operation on a manual
wheelchair?
Diagnosis Check
1.4. Assistive Operation Diagnosis Check
Use the diagnosis check below as a guide to determine whether or not you can provide assistive
operation.
If you feel uncomfortable with any of the 3 tasks below, do
not provide assistive operation.

4
1
1.5. Warnings and Notes for the Operation
Please read this manual before using the product.
Please read this manual carefully to ensure safe and comfortable operation. After reading it,
store it where it can be accessed easily for future reference.
Unless specifically noted, the following information applies to when the user is operating the
wheelchair themselves and when an assistant is operating the wheelchair using the assistant
operations.
1.5.1. Before Using the Wheelchair after Purchasing the Unit
WARNING
LIf an assistant is to accompany you and operate
the wheelchair, be sure to assess his or her com-
petence.
Moreover, when assessing the assistant’s compe-
tence, consult expert opinions as a point of refer-
ence.
If your judgment is based solely on your own
opinion, you or other people around you may get
injured.
Expert
LIf you lack the competence to provide assistive
operation, do not attempt to provide it.
WARNING
LBefore using the wheelchair, be sure to as-
sess your competence and determine whether
or not you need an assistant.
Moreover, in determining the necessity of an
assistant, consult expert opinions as a point
of reference.
If your judgment is based solely on your own
opinion, you or other people around you may
get injured.
LPractice traveling on a level and safe area
with an assistant accompanying you, until you
are comfortable with the operation. If you go
on public roads while still unfamiliar with the
operation, you or other people around you
may get injured.
Expert

5
1
1.5.2. Before Use Every Day
WARNING
LPerform the daily checks before use every
day. Make a habit out of inspecting the wheel-
chair. Continued use of the wheelchair with a
problem in the wheelchair body or the wheels
may cause damage to the wheelchair while
traveling, and may result in a rollover or fall.
LBefore using the wheelchair every day, ensure
that there is air in the tires. Always keep the
air pressure in the rear tires at a normal level.
If the air pressure in the rear tires decreases,
the parking brakes may become ineffective.
LBefore using the wheelchair every day, ensure
that the anti-tip device is in the correct posi-
tion. If the anti-tip device is not in the correct
position, the wheelchair could fall backward.
LBefore using the wheelchair every day, check
the residual capacity of the battery. If the
residual capacity of the battery is low, the bat-
tery may run out during operation and it may
become impossible to travel in power drive
mode.

6
1
1.5.3. Handling the Wheelchair
WARNING
LModifying the unit or its mounting may ad-
versely affect its performance and safety.
Never make any modifications.
LIf the wheelchair has parts that are foldable or detachable, do not operate the wheel-
chair with those parts folded or removed.
LWhen lifting the wheelchair, do not hold mov-
able parts.
LDo not operate with any heavy baggage
hanging over the backrest, or with any heavy
objects in the compartment. The wheelchair
could easily fall backward on an inclined
slope, and may cause you or other people
around you to get injured.
LThe wheelchair may tip over if it is operated
with the anti-tip device removed, folded, or
with the safety wheels facing upwards. Be
sure to set the anti-tip device correctly and
operate the wheelchair with the safety wheels
in the correct position.

7
1
WARNING
LDo not hang anything on the joystick on the
controller. It may get in the way of your opera-
tion, or the weight of the object may prevent
the joystick from returning to its original posi-
tion, even after your hand has released it.
In addition, if you put a rubber band around
the joystick, it may get jammed inside the con-
troller, causing the joystick to not return to its
original position.
In either case, there is a risk of the wheelchair
not stopping.
LIn areas with an incline, do not switch the
clutch levers to the manual position. The
wheelchair may start moving unexpectedly,
and may collide or tip over.
LDo not operate the clutch levers while the
wheelchair is in motion. There is a risk of col-
lision or tipping over.
If you switch the clutch levers to the man-
ual position while traveling in power drive,
the motor brake loses its effect and the
wheelchair may go out of control.
If you switch the clutch levers to the power
drive position while traveling in the manual
drive, brakes are applied to the rear tires.
This abrupt braking can cause your body
to plunge forward or damage the wheel-
chair.
Clutch
levers in
manual
position
Clutch
levers in
manual
position

8
1
WARNING
LRemoving the battery while traveling causes the
brakes to be applied to the rear tires, and may
cause you or other people around you to get
injured.
LTurning off the power switch while traveling
causes the brakes to be applied to the rear tires,
and you or other people around you may get
injured.
LWhile the wheelchair is being operated or after
operation, do not touch the back of the drive
units. During or after operation, the back of the
drive units may be hot. In addition, if the wheel-
chair is near a source of heat, the drive units
may become hot.
LWhile operating the wheelchair, be careful not
to get your hands tangled in the wheel spokes,
wheel holes, etc.
LThe wheels of the JWX-1 16" are not equipped
with hand rims. When operating the JWX-1 16", do
not manually drive the wheelchair by holding its
rear tires or wheels. You may injure yourself.
Back of the unit
(Both side)

9
1
WARNING
LWhen getting in the wheelchair by yourself or
when the assistant has the user of the wheel-
chair get in the wheelchair, ensure that the
wheelchair is on a level ground. If the user at-
tempts to get in the wheelchair on an incline,
he or she may lose balance and fall off the
wheelchair.
LTo switch the clutch levers to the manual position, such as when starting assistant op-
erations, apply the parking brakes on a level and stable ground, and then with the power
turned off, switch the clutch levers.
LIf you are using a wheelchair with no parking
brakes, have the assistant hold the wheelchair
to ensure that it does not move. Failure to ob-
serve the above may cause the wheelchair to
start moving unexpectedly, and may result in
you or other people around you to get injured.
LDo not lean out of the wheelchair to retrieve
an item. Otherwise, you could fall off the
wheelchair or the wheelchair could tip over.
1.5.4. Getting In/Out of the Wheelchair, Seating
WARNING
LNever ride the wheelchair with two people.
The wheelchair may malfunction or the people
riding it may get injured.
1.5.5. General Operation

10
1
WARNING
LNever operate the wheelchair after consuming
alcohol or taking medicine that causes drowsi-
ness.
LNever operate the wheelchair while holding an
umbrella or other items.
LNever tow the wheelchair. Do not use the wheelchair to tow or pull anything.
LIf you want to use a portable phone, etc., stop
the wheelchair at a safe place and turn off the
wheelchair. Moreover, while traveling in power
drive, keep portable telephones and other
electronic devices turned off. Otherwise, there
is a risk of an accident.
LDo not operate the wheelchair near a de-
vice that produces strong radio waves. If the
wheelchair is near a source of radio waves
and starts to operate abnormally, immediately
turn off the power, and quickly move away
from that location using the assistant opera-
tions or manual operation.
The weak electromagnetic waves emitted by
the JWX-1 may affect other electronic devices,
such as automatic doors and the anti-theft
systems of stores. In this case, turn off the
power and operate the wheelchair using the
assistant operations or manual operation.

11
1
WARNING
LDo not use the wheelchair for transport-
ing luggage or for any other purpose than
to provide assistance to a disabled per-
son.
LDo not ride with clothing that is unsafe for wheelchairs, such as shown below. If you
drive with such clothing, you or other people around you may get injured. Long scarves
Clothing with loose sleeves Pants/skirts with wide hems Bare feet, sandals, slippers, ill-
fitting footwear, etc.
Long scarvesLong scarves Clothing with loose sleevesClothing with loose sleeves
Pants/skirts with wide hemsPants/skirts with wide hems Bare feet, sandals, slippers,
ill-fitting footwear, etc.
Bare feet, sandals, slippers,
ill-fitting footwear, etc.

12
1
WARNING
LWhen the wheelchair is operated outdoors, its legal status is that of a pedestrian. Make
sure to adhere to the rules and manners of a pedestrian.
LOn general roads, be careful of automobiles, bicycles, and pedestrians. In particular, pay
the utmost attention to pedestrians.
LAlthough the wheelchair can be operated on
pedestrian-only roads, it cannot be operated
where pedestrians are not allowed (car roads, in
the middle of a road, etc.).
LIf the road has a sidewalk, operate the wheel-
chair on the sidewalk.
LIf the road does not have a sidewalk, operate
the wheelchair on the side strip of the road
where pedestrians walk.
LIf the road does not have a side strip, operate
the wheelchair on the side of the road where
pedestrians walk.
LIf two or more wheelchairs are traveling to-
gether outdoors, the wheelchairs should be
operated in a single line with sufficient space
between the wheelchairs. The wheelchairs
should not be operated side by side.
LWhen starting off or moving backward, be careful of other people and obstacles around
you.
LIt is extremely dangerous to travel on a narrow street without a sidewalk. Choose a safer
path whenever possible.
1.5.6. Operation on Public Roads
In the following environments and situations, you may need an assistant to accompany you
and to operate the wheelchair for you.
In such cases, have an assistant accompany you. Traveling alone in these situations may
lead to injury.
Moreover, check to see if any dangers such as those shown below exist in the roads you use
on a daily basis. If so, select a route that does not pass through such areas.
Always check the surrounding conditions to ensure safety.

13
1
WARNING
LBe careful not to travel too close to the edge
when traveling on an embankment, etc., of a
road. Depending on the condition of the shoul-
der of the road, you could accidentally move off
the road.
LWhen traveling on a sidewalk that does not
have a guardrail, there is a risk of falling into
the street side. Have an assistant accompany
you instead of traveling alone.
LWhen traveling near a ditch, the tire may fall
into it if there is a gap even if it is covered.
Have an assistant accompany you instead of
traveling alone.
LIf there are any obstacles, stop the wheelchair and check in front of you and behind you
for safety before proceeding.
LIf an oncoming vehicle is near, stop the wheel-
chair, wait for the vehicle to pass, and then
check in front of you and behind you for safety
before proceeding.
LDo not operate the wheelchair outdoors at
night. Not being able to see the road condi-
tions, you may lose balance and fall, or peo-
ple or cars may collide into you if they cannot
recognize you.

14
1
WARNING
The wheelchairs equipped with the JWX-1 are built to be lighter compared to other heavier
electric wheelchairs that use a general lead battery. For this reason, when a person sits in it,
the overall center of gravity shifts higher. Therefore, caution is necessary when traveling on a
slope.
LDo not use the wheelchair on a slope steeper
than 6 degree (10% grade). It may tip over or
the brake may become ineffective.
LWhen going up/down a particular slope for the
first time, have an assistant accompany you to
ensure safety.
LIn areas with an incline, do not switch the
clutch levers to the manual position. The
wheelchair may start moving unexpectedly,
and may collide or tip over.
over 6°
1.5.7. Operation on Slopes
Clutch
levers in
manual
position
WARNING
LIf it is raining or snowing, do not operate the
wheelchair outdoors. Automobiles and other ve-
hicles may collide into you if they cannot recog-
nize you. If it starts to rain or snow while you are
outdoors, move indoors as soon as possible.

15
1
WARNING
LDo not abruptly turn on a downhill slope. In
addition, do not traverse horizontally or diago-
nally across a steep slope. You could easily
lose balance and tip over.
LIn the areas where the wheelchair leans
sharply to the left or right, the wheelchair may
tip over sideway. Have an assistant accom-
pany you.
LWhen descending down a slope with the as-
sistant operations, descend in reverse. If the
assistant moves the wheelchair forward when
descending, the passenger may plunge for-
ward and fall off the wheelchair.
WARNING
The wheelchairs equipped with the JWX-1 are built to be lighter compared to other electric
wheelchairs that use a general lead battery. For this reason, when a person sits in it, the overall
center of gravity shifts higher. Therefore, caution is necessary when traveling on a curb.
LWhen traveling in power drive mode, the
wheelchair can clear level differences of up to
25 mm (1 inch). Any greater level differences
should be cleared by an assistant by manual
push operation.
1.5.8. Going Up/Down Curbs