WHILL F Series User manual

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Maintenance Manual
WHILL Model F
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: 32-14027-1
Version 1.0.1 [EN]
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WHILL Model F series
Maintenance Manual
REF 34-14027-1-2022-02
February 2022

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Maintenance Manual
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Table of Contents
1Introduction..................................................................................................4
2Conventions Used in This Manual ...............................................................5
2.1 Contents of This Manual ........................................................................................... 5
3Product Specifications .................................................................................6
4Maintenance Tools and Parts ......................................................................7
5Maintenance ................................................................................................8
5.1 Cleaning Procedure .................................................................................................. 8
5.2 How to Replace Components ................................................................................... 8
6Li-Ion Battery Handling and Maintenance ....................................................9
7Inspecting the Front and Rear Wheels.......................................................10
8Inspection, Maintenance, and Maintenance Items .....................................11
9Daily Maintenance .....................................................................................12
9.1 Replacing the Battery...............................................................................................12
9.2 Replacing the Seat Base Fabric...............................................................................13
9.3 Replacing the Back Support Assembly ....................................................................16
9.4 Replacing the Seat Cushion.....................................................................................18
9.5 Replacing the Color Plate ........................................................................................19
9.6 Replacing the Wheel Cover .....................................................................................22
10 Maintenance with Parts Replacement .....................................................24
10.1 Replacing the Front Wheel ...................................................................................24
10.2 Replacing the Front Fork ......................................................................................26
10.3 Replacing the Rear Wheel....................................................................................28
10.4 Replacing the Controller .......................................................................................30
10.5 Replacing the Controller Upper Case ...................................................................39
10.6 Replacing the Controller Mouse / Boot .................................................................45
10.7 Replacing the Arm Rest Frame.............................................................................47
10.8 Replacing the Main Body Upper Cover.................................................................48
10.9 Replacing the Arm Inner / Outer Cover.................................................................51
10.10 Replacing the Arm Frame Assembly .................................................................54
10.11 Replacing the Lock Release Button...................................................................62
10.12 Replacing the Seat Frame.................................................................................65
10.13 Replacing the Back Support Frame...................................................................68
10.14 Replacing the Motor Unit ...................................................................................70
10.15 Replacing the Brake Release Lever ..................................................................74

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10.16 Replacing the Stand Wheel .............................................................................. 77
10.17 Replacing the Footrest...................................................................................... 78
10.18 Replacing the Footrest Frame ............................................................................ 8
10.19 Replacing the Anti-tip Roller ............................................................................. 83
10.20 Calibration Adjustment...................................................................................... 85
11 Device Adjustments ................................................................................89
11.1 Adjusting the Arm Height ..................................................................................... 89
11.2 How to Change the Controller Width and Position............................................... 91
12 Model F series Parts List ........................................................................95
Periodic Inspection Sheet...............................................................................98

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1 Introduction
This is the Maintenance Manual for the WHILL Model F series.This Maintenance Manual provides
instructions and guidelines on how to maintain and service the device and is intended for use by sales
personnel and distributors. Please read the WHILL Model F series’ User Manual along with this document to
become familiar with the important functions of this device. This manual also describes how to replace and
adjust parts that are also given in the User Manual.
If the Model F series is maintained or serviced with methods or procedures not in accordance with those
described in this manual, there is the risk of injury or damage to this device. Servicing the Model F series
device in ways not consistent with the methods and procedures outlined in this Maintenance Manual violates
the Warranty of the device.
This manual contains information that is protected by patent rights and copyrights. It may not be reproduced
in part or in whole without explicit written permission from WHILL, Inc.

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2 Conventions Used in This Manual
This manual explains the various parts of this device by means of text, illustrations, photographs, and
standard terms.
Graphic symbols used in this manual
Symbol
Description
WARNING
Indicates critical instructions to prevent an imminently hazardous situation that may
result in death or serious injury.
CAUTION
Indicates instructions to prevent a potentially hazardous situation that may result in
minor injury, property damage or both.
Indicates a required act.
Indicates a prohibited act.
Indicates precautions or reference information that must be read to prevent device
malfunctions or failures, and to ensure comfortable device use.
2.1 Contents of This Manual
2.1.1 Figures (photographs)
This manual uses photographs to simplify explanations of how to perform maintenance and how to handle this
device. Photographs may differ from the actual product in use depending on when it was manufactured, its
specifications, software version, and the country of purchase. Be sure to read the User Manual to understand
important functions of this device and other details.
2.1.2 Device specifications
All specifications and explanations given in this manual have been checked to be free of mistakes when this
manual was made.
2.1.3 Errors and omissions
Every effort has been made to ensure the contents of this manual. Please contact your distributor or customer
support if you notice any inaccuracies or omissions in this manual.
URL: https://whill.inc/us

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3 Product Specifications
Item Use/Dimensions
Device name
WHILL Model F/Fi
Name and address of the
manufacturer
WHILL, Inc.
Zip code 140-0002
2-1-11 Higashishinagawa, Shinagawa-ku, Tokyo, Japan 140-0002
Maximum weight limitation
115 kg (253.5 lbs.) including occupant and luggage
Drive type
2-wheel drive
Speed changes
4 stages
Brake type
Electromagnetic brakes
Type of front tires
Outside diameter 194 mm
Type of rear tires
Standard: Air tire: Outside diameter 10 1/8 inches (207 mm)
Maximum allowable inclination
10°
Cruising distance
20 km
Maximum load capacity
115 kg
Charging time
5 hours
Operating temperature
-15 to 40°C (5 to 104 °F)
Pivot width
1,080 mm
Force needed operate controller
1N
Noise produced by device and level
thereof
65 dB or lower except audible warning device
Name and address of the battery
manufacturer
WHILL, Inc.
Zip code 140-0002
2-1-11 Higashishinagawa, Shinagawa-ku, Tokyo, Japan 140-0002
Battery type
Lithium-ion battery
Nominal voltage
25.3 V
Rated capacity (5-hour rate)
10.6 Ah

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4 Maintenance Tools and Parts
Use the following tools and parts when performing adjustment and replacement.
Hex Wrench Set Hex Bit Socket Set Ratchet Drive Ratchet
Hex wrenches and hex bit sockets are used for tightening and loosening the attached screws of each
component. The required sockets sizes are as follows: 3 mm, 5 mm, 6 mm, 7 mm, and 8 mm tools.
Socket set Extension bar Bit (for cross recesses) Phillips Screwdrivers (#1, #2)
If sockets are difficult to reach, use a 200 mm length extension bar.
The required sockets sizes are as follows: 8 mm, 10 mm, 12 mm, and 18 mm tools.
Torque wrench Torque driver E-ring pliers Depth gauge
All nuts and bolts must be tightened at the specified optimum torque - an analog or digital torque wrench
capable of accurately measuring torque is required.
To ensure that work is performed properly, be sure to perform all adjustment or replacement of parts
in a location where sufficient lighting is available.
CAUTION
Some cables that are located inside the device require bundling bands to prevent the cable from coming
loose. Before cutting the bundling bands during replacement of parts, be sure to check the locations where
the bundling bands are attached and secure the cables with the bundling bands at the same locations after
adjustments. When using tools, be careful not to scratch the device or components.

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5 Maintenance
5.1 Cleaning Procedure
If there is a significant amount of dirt on the exterior or wheels, wipe it away with a wet towel. Pay attention
when washing the wheels off with water to prevent water from splashing the motor, connectors, and other
electrical parts.
If the dirt is tough to remove, use a neutral detergent. Avoid the use of petroleum-based solvents. Prevent
solvent from splashing parts not specified for cleaning.
CAUTION
Be sure to observe the following as they might cause discoloring, stains, deformation and deterioration or
might cause scratches.
Do not use strong acidic or alkaline solvents.
When cleaning tires, use solvent when the tires have cooled down. (As a rule, to below body
temperature)
Thoroughly wash off solvent immediately after use.
Do not use hard brushes or solvents containing abrasive compounds.
Do not use inflammable petroleum-based solvents (e.g., gasoline, benzene, or paint thinner), organic
solvents (e.g., Acetone), acidic or alkaline solvents, and dyeing agent.
Do not use a high-pressure washer.
Wash only the wheels of the device with water and not the device or its other parts.
5.2 How to Replace Components
When a part must be replaced, be sure to read this manual before starting work.
WARNING

Do not perform any adjustment, repair, or modification that is not listed in this manual. There is a risk of
injury and product safety risk due to damage to the device or its parts. Performing repair or modification
which is not listed in this manual will invalidate the warranty.
Replace the anti-tip roller if it is damaged.
After installation, make sure that bolts and screws have not fallen off.
Be sure to use only genuine parts sold by WHILL, Inc. Use of non-genuine parts might cause the device
to malfunction or lead to an accident.
Remove the battery before performing work.
CAUTION
If a component becomes worn, damaged, or broken and requires replacement, contact your distributor. If
a faulty part is still used in a faulty state, there is a risk of damage to the device that renders it inoperable.

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6 Li-Ion Battery Handling and Maintenance
It is important to fully charge the battery before using WHILL Model F series for the first time. Ensure the
battery is charged before use if the device has not been used for a long period of time. The maximum driving
range of this device (11 miles (20 km)) was measured under ideal conditions; however, the actual range may
vary depending on the driving conditions such as hills, curves, steps, terrain, driving habits, load, and
temperature. If the device is going to be driven for an extended period or for longer distances, please follow
the suggested recommendation below:
Ensure the battery is fully charged before use.
Keep the weight of storage items to a minimum.
Plan your route to avoid hills and obstacles.
Maintain consistent speed and avoid sudden and frequent stops.
Take care not to drop the battery when removing from the device or installing it in the device.
CAUTION
Be sure to use only genuine rechargeable batteries exclusively for the WHILL Model F series .
Be sure to use only a genuine charger exclusively for the WHILL Model Fseries.
Be sure to read the User Manual before using the battery to prevent malfunctions or accidents.
Be sure to install the cap when the battery charging port is not in use. There is a risk of a short circuit
caused by foreign objects if they enter the port.
Unplug the DC connector of the charger from the battery after charging. There is a risk of battery
deterioration if the DC connector of the charger is left plugged in the battery for several days.
If the device does not start properly, remove the battery, and then re-insert it after 10 seconds have
elapsed.
The charger is for indoor use only. Do not charge the battery outdoors.
It is recommended that the battery be charged regularly at the end of the day of usage. Insufficient battery
power can be prevented by using a fully charged battery the next time the device is operated.
If you have any questions about the battery, please contact your distributor or customer support.

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7 Inspecting the Front and Rear Wheels
Are the tires ruptured or damaged?
Is the groove depth sufficient?
Using a depth gauge, measure the depth of the tire grooves. If the depth is the specified value 0.5 mm or
less, replace the tire.
Check the rear wheels to see that they are at the appropriate air pressure [specified air pressure: 40 psi].
WARNING
Be sure to observe the following.
Failure to observe the following will lead to damage to parts or unstable steering which might result in serious
injury, and, in the worst instance, a fatal accident.
Use tires for the left and right tires that are equally worn
Check that parts are tightened to the specified torque.
Use the same specified screws that are not damaged.
Do not attach the rear wheels with their front and rear sides reversed.
Use of tires with abnormalities is forbidden
Use of tires with abnormalities still attached to the device is dangerous as this might result in the following
situations and lead to unexpected accidents.
Abnormal vibration.
Unstable direction of forward travel on uneven road surfaces.
Device slipping sideways.
Failure to demonstrate the intrinsic performance of the device (cruising distance, stability and braking
distance)
Cautions when replacing tires
Never remove the center nut when replacing the rear wheels.
Do not apply a coating of oil or grease to screw and nut sections.
Remove oil or grease from screw and nut sections if oil or grease is found on these sections.
Tighten screws at the specified torque. When tightening does not conform to the specified torque, nuts will
be tightened beyond the required torque. This might break or damage the screws or nuts might loosen
which will cause wheels to fall off and lead to serious accidents.
Take care to attach screws and nuts at the correct locations.
Do not use damaged screws and nuts.
Do not use rear wheels that are ruptured, deformed or abnormal in other ways.
After installing tires, check that screws and nuts have not fallen off.
groove depth
depth gauge
measuring point
tire

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8 Inspection, Maintenance, and Maintenance Items
(1) Inspection and Maintenance
Inspection and maintenance must be performed before driving to ensure safe use of the device. Inspection
and maintenance items specified by WHILL must be thoroughly understood to perform inspection and
maintenance.
(2) Inspection and maintenance items and details of inspection items (see page 95)
The Periodic Inspection Sheet summarizes the inspection and maintenance items and the details of the
inspection procedure. Inspection items must be standardized based on this Periodic Inspection Sheet as it is
important to prevent variations (i.e., differences in quality) from occurring when inspections are performed by
different personnel.
When an abnormality is found, be sure to perform an inspection and maintenance on the device.
When the inspection has been performed, the results of the inspection must be entered in the Periodic
Inspection Sheet. Also, keep an accurate record of inspections, replacement of parts, and maintenance
performed provisionally.
These are inspections specified by WHILL, Inc. to ensure safe use of the device.Perform checks in
accordance with inspection items. If device standards are not complied with, parts must be adjusted, repaired,
or replaced, for example, to restore them to their normal state.

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9 Daily Maintenance
9.1 Replacing the Battery
Tool used: None
Replacement part: 23-00006-0 Battery
Removing the battery
(1)
Press the battery lock release button.
(2)
Pull out the battery by holding its handle.

Installing the battery
You will hear a click, and the
battery will be drawn out to the
front.
(1)
Install the battery.
Push in the battery until you
hear it click into place.

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9.2 Replacing the Seat Base Fabric
Tool used: Hex wrench/hex torque wrench
Replacement part: 24-14025-0 Seat Fabric Kit [F] (screws x 8/nuts x 8)
Removing the seat assembly
(1) Disconnect the cable from the rear side of the seat. Secure the removed cable to prevent it from
contacting the ground (e.g., hook it onto the frame).

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Installing the Seat Assembly
(1) Lay the seat base fabric on the seat and install the screws (8 pcs).
(2) Connect the cable to the rear side of the seat base fabric.
Wiring on top side of seat base fabric
Torque value: 3 Nm
Check that the nuts (8 pcs) are inserted into
the frame.
When passing the cable under the seat base fabric,
pass it through the holes on the left and right.
OK
NG

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Wiring on the underside of seat base fabric
Route the wiring by referring to the photographs.
If the cable is passed through the wrong locations, the cable might become damaged, for
example, when the device is folded.
Controller right side
Controller left side

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9.3 Replacing the Back Support Assembly
Tool used: None
Replacement part: 31-14036-0 Back Support Fabric [F]
Removing the Back Support Fabric
(1) Remove the base section of the back support fabric from the hooks on the left and right of the back
support frame.
(2) Remove the back support fabric by lifting upwards.

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Installing the Back Support Fabric
(1) Install the back support fabric.
(2) Install the back support fabric by placing the fabric over the back support frame and hooking the rings of
the back support fabric onto the hooks on the left and right side of the back support frame.

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9.4 Replacing the Seat Cushion
Tool used: None
Replacement part: 22-14001-0 Seat Cushion [F]
Removing the Seat Cushion
Installing the Seat Cushion
(1) Install the seat cushion with its round end towards the rear wheel.
(1)
Grab the rear of the Seat Cushion and lift up and forward to remove.
The seat cushion is secured by hook-
and-loop fastener so a slight amount of
force is required to remove it.
Rear Wheel Side
Front Wheel Side

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9.5 Replacing the Color Plate
Tool used: None
Replacement part: 31-14049-0 Arm Outer Cover Color Plate White [F]
Removing the Color Plate
(1) Referring to the controller replacement method, remove the controller / arm rest.
(2) Slide the color plate upwards.
(3) Remove the color plate.

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Installing the Color Plate
(1) Align the tabs on the rear of the color plate with the grooves (6 pcs) of the arm plate.