SUPER 73 Super73-S2 User guide

OWNER’S HANDBOOK
ASSEMBLY & MAINTENANCE
SUPER73-S2
EN
V.1 2022

2
WELCOME!
Please read this owner’s handbook carefully before using your
Super73 in order to become thoroughly familiar with the correct
operation of your bike’s controls, its features, capabilities, and
limitations. This handbook includes safe riding tips, but does
not contain any of the techniques and skills necessary to ride an
electric bicycle safely.
Join the Supersquad community of riders wherever you are!
This is just the beginning of your adventure with us! We look
forward to hearing about your experience and seeing you online
on our social
networks:
Instagram.com/super73
Youtube.com/c/super73
Facebook.com/groups/Super73owners/
Tag us! @Super73 #Super73
CONTACT SUPER73
This handbook was drafted in the English language (Original instructions) and may have
been translated into other languages as applicable (translation of Original instructions).
This handbook contains information on the Super73 electric bikes. Always store this
Owner’s Handbook with the Super73 and refer to it for information whenever necessary.
The information contained in this publication is based on the latest information available
at the time of printing.
Please note all instructions and notices are subject to change and updates without
notice. Please visit support.super73.com for periodic tech updates.
Feedback: support.super73.com
This is not to be reproduced wholly or in part without the written permission of
Super73. ©Copyright 2022 Super73, Inc. , V.01. Updated 06/2022.
North America:
SUPER73, Inc.
659 Noyes Ave, Irvine,
California 92606, United
States
+ [phone]
support.super73.com
Europe:
SUPER73
Industrieweg 6
5 AD Duivendrecht,
Netherlands
003 (0)20 30 800 73
eu.super73.com

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TABLE OF CONTENTS
2
5
6
8
8
9
10
13
14
15
20
21
26
25
26
31
Contact Information
General Information
Diagram of S2
Legal Information
Intended Use
Getting Started
Assembly Instructions
Registration
Pre-ride Safety Check
Operating the Bike
Super73 Ride App
General Warnings
Safety
Maintenance Schedule
Maintenance and Components
Warranty

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MISSION STATEMENT
+ +
Super73 exists to create adventure and community.
We strive to bolster adventurous exploration through
innovation, create positive and forward-thinking
experiences with integrity, and cultivate enthusiastic
support and vision for the community.

5
WARNING!
Warnings, precautions, and potential risks associated with the use of your Super73.
Danger!
Possible dangers for your life and health if respective calls to action are ignored.
Tip!
Recommendation! Meaningful additional information.
Please perform a safety check before each use, as described on in the “Pre-ride Safety
Check” section on pg. 4 of this handbook. Do not ride your Super73 if it has been
assembled incorrectly. Riding an incorrectly assembled bike may put your own safety
at risk as well as others.
If you feel uncertain about proper configuration after assembling your Super73
according to the provided assembly instructions, please contact your specialized
retailer or Super73 directly.
TIP
!
!
!
If any of the instructions are beyond your skill set, we recommend taking your
Super73 to a certified E-Bike specialist or professional cycle mechanic for assembly.
This owner’s handbook includes assembly and maintenance work which may need to
be done at frequent intervals to maintain an operational and safe Super73. Never
perform work on your Super73 beyond instructions in this handbook. This handbook
is not intended as a comprehensive use, service, repair or maintenance handbook.
Maintenance beyond what the owner’s handbook instructs is to be handled by an
E-Bike specialist or professional cycle mechanic.
GENERAL INFORMATION
Please note the following symbols:

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DIAGRAM OF THE SUPER73-S2
REAR DROPOUT
CHAIN RING
CRANK SET
BOTTOM BRACKET
REAR HUB MOTOR

7
DISPLAY (LEFT SIDE)
THROTTLE (RIGHT SIDE)
BRAKE ROTOR
FRONT DROPOUT
BATTERY
CHAIN RING

8
!
Please check your country or state’s regulations on electric bikes before riding. There
are variations on age limit, speed, motor wattage, and road accessibility. Visit this
website for more information: https://super73.com/laws-and-policies-for-e-bikes
In most European countries and Australia, the rules of public traffic valid for bicycles
also apply to e-bikes traveling up to 25 km/h. However, there are some notable
differences (such as the age limit of the cyclist). More information here:
http://bike-eu.com.s3-eu-central-.amazonaws.com/app/uploads/205/09/rules-
regulation-on-electric-cycles-in-the-european-union-may-207.pdf
No liability or warranty shall be accepted if the use of the Super73 deviates from this
intended use, if safety instructions are not observed, in the event of overloading, or if faults
are not properly rectified. Similarly, no liability and warranty shall be accepted in the case
of assembly errors, willful intent, accidents, and/or if care and maintenance specifications
are not followed. Any modification or alterations to the electrical system (tuning) voids all
claims under warranty and guarantees.
• Your Super73 electric bike is designed for use on paved paths only. You should
therefore never ride on stairs, jump, or perform wheelies or similar activities.
• Super73 electric bikes are not approved for participation in competitions.
• Commercial use does not form part of the intended use.
• Operation parameters, maintenance, guidelines, and service instructions
described in this manual are part of the intended use.
Please observe the permitted overall rider weight of 325 lbs (47kg).
!
DANGER!
If the user rides the Super73 beyond its intended use, there may be a risk of an
accident, serious injury, or death, as well as risk of serious injury to those around the
user.
LEGAL REQUIREMENTS
INTENDED USE
For the latest information on assembly and maintenance, please visit
support.super73.com
!

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Please read all assembly instructions in full before beginning the build of your new
bike.
DANGER!
Please read the instructions entirely before assembly to ensure the proper
functioning of the Super73. Failure to do so could result in serious injury or death
and the risk of potential injury to those around the user.
TIP VIDEO
View our assembly video to follow step-by-step instructions on our website at
support.super73.com
GETTING STARTED
!
IN THE PACKAGING
• 1 x lithium-ion battery
• 2 x keys for the battery
• 1 x battery charger
• 1 x set of pedals
• 1 x two-sided open-end wrench with 15mm and 13mm ends
• 1 x 5mm hex wrench
ADDITIONAL RECOMMENDED TOOLS:
• 2.5 mm hex wrench
• 4 mm hex wrench
GOOD TO KNOW:
• Bolts for the handlebars mount are M6 X 12mm socket head cap screws.
• Right pedal has the letter “R” inscribed on it, the left pedal has the letter “L”
inscribed on it.
• 5mm Allen key can also be used to adjust brakes.
• Tire inner tube size is 20”x4.5 or 20”x5” for the rear and front with Schrader
valve.
Before performing any work on your Super73, turn off the power system and remove
the battery. Be sure to also turn off the power system and remove the battery
during transport in a vehicle. Involuntary activation of the pedal assistance system
presents a risk of damage or injury.
DANGER!
!If any serious damage has occurred to your Super73 during transit, please submit
photos to Super73 directly by emailing us at cust[email protected]

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1. HANDLEBAR INSTALLATION
A. Use the 5 mm hex wrench to remove the bolts from the handlebar clamp.
B. Once the clamp is open, place the lower crossbar of the handlebar in the
groove of the top crown.
C. Loosely tighten the handlebar clamp with the 5 mm hex wrench, and adjust
the angle of the handlebar to rider’s comfort.
D. Cross-tighten the handlebar clamp from corner-to-corner making sure the
clamp is tight and handlebars do not move.
ASSEMBLY INSTRUCTIONS
DANGER !
Do NOT ride your Super73 if it has been assembled incorrectly. Riding an incorrectly
assembled bike can put your own safety at risk as well as others. Before your first
ride, perform the pre-ride safety check on pg. 4.
A
C D
B

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2. INSTALL PEDALS
A. Install and tighten the pedals using the 15 mm open wrench. Look for a letter
marking “L” “R” on each respective pedal and make sure you install the left
pedal on the left crank, and the right pedal on the right crank.
B. The right pedal is screwed on in a clockwise direction. The left pedal is
screwed on by turning it counter-clockwise.
3. TIRE INFLATION
For transport purposes, tires are packed partially inflated. Tires must be inflated using a
pump with a Schrader valve tip to a recommended 27-30 psi (.86 - 2.06 bar).
A. Inflate the tube to a max pressure of 35 PSI in order to ensure the tire is
properly seated in the rim.
B. Once properly seated, deflate to a recommended 27-30 psi (.86 - 2.06 bar).
PSI will vary based on the weight of rider and type of terrain.
The inner tube size is 20”x4.5 or 20”x5” for the rear and the front.
TIP
AB

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The battery can be charged both mounted on the bike or separately from the bike. Two keys
are supplied to unlock and lock the battery.
A. Plug the charger into a 20v wall outlet (220v EU).
B. Connect the charger cable to the battery charging port.
C. Turn the battery on by switching the power button to the “” postion. The
battery will not charge unless it is switched on.
D. The throttle is disabled during the charge sequence and a charge icon will
appear on the display during the charging process.
When the charging process starts, the charger LED turns red. Once the battery is charged,
the LED turns green.
A. Turn the battery off.
B. Remove the charger cable from the battery charging port.
C. Remember to put the protective cap back onto the battery charging port after
charging to protect it from dirt and moisture.
D. Unplug the charger from the socket.
Always make sure there is plenty of ventilation and a dry, fireproof environment for
the charger before following these operating instructions.
• Do not leave the battery connected to the active charger for more than 48
hours.
• Do not leave the charger connected to a socket for more than 48 hours.
• Charge the battery and use the bike at least once every 90 days.
• Do not store the bike for more than 24 hours with an empty battery. This
prevents a deep discharge with irreparable consequences from occurring.
• Do not use the charger if the charger, main cable, or connector cable have any
visible signs of damage.
• After being charged, if the battery remains connected to the charger, it
will turn on and off again in short spurts of green light. This is not a defect.
It simply indicates that individual battery cells are being slowly charged.
Nevertheless, make sure that the battery is not connected to the charger for
more than 48 hours.
More information on range and battery care in the Maintenance and Components
section on pg. 26 of this handbook.
5. CHARGE THE BATTERY
We recommend charging the battery for 4-5 hours on the first charge. This will help
condition the lithium-ion cells for optimal performance.
TIP
TIP
!
Battery Range
Power output will vary depending on battery capacity. If your battery is at 20%, for
example, it won’t have as much power as a fully charged battery. If your Super73 has been
shipped to you along with the battery, please fully charge the battery first. When a battery
leaves the factory, it’s not fully charged as required by international air and sea legislation.
Battery is fully charged when the LED light on the charger is green.

13
!
You’re almost ready to ride! Before your first ride, please verify your bike is safe to
ride using the pre-ride safety check on pg. 4.
ASSEMBLY IS FINISHED!
REGISTER YOUR SUPER73
All original owners must register on our website to validate your
warranty.
Please register online at: https://super73.com/register-product/
or scan the QR code.
TIP
!
If you unable to register online, please call us at + [phone] for assistance
regarding registration. Write down below the following information for future
reference:
Location or website of purchase: ______________________________________________
Date of purchase: ___________________________________________________________
Model name: Super73-S2
Bike Serial #: _______________________________________________________________
(Engraved on the underside of the bottom bracket in between the pedal cranks)
Battery Serial #: ____________________________________________________________
Battery Key #: ______________________________________________________________
We recommend that you keep your original receipt with this handbook.

7. KICKSTAND
Make sure that the kickstand is tightly secured, and not rubbing against
the ground or tires.
3. BRAKES SYSTEM
Pull both brake levers. You should feel an obvious pressure point and the
levers should not be able to touch the handle.
2. BATTERY
Check that the battery is inserted securely: push the battery into its
holder until it clicks into the lock. Remove the key from the lock and
pull the battery to check if it has indeed locked into place.
Check the charge status of the battery. Familiarize yourself with
battery charging and storage best practices.
More information on battery maintenance in our maintenance &
components section of this handbook on pg. 26.
PRE-RIDE SAFETY CHECK
Make sure the brakes have already been applied before getting on to your bike.
If the assistance mode is turned on, your Super73 will start moving as soon as
you push on the pedal. The unfamiliar push can otherwise cause a fall, hazard, or
accident.
DANGER!
Do NOT ride your Super73 if it has been assembled incorrectly. Riding an incorrectly
assembled bike can put your own safety at risk as well as others.
Never operate your bike and use your app simultaneously.
!
TIP
CHECKLIST:
. WHEELS
Check the condition of both tires making sure the tread is in good
condition, free from punctures, cracks and deformations.
Maintain proper tire pressure. We recommend a range of 27-30psi
(.86 - 2.06 bar) dependent on the weight of rider and type of terrain.
Ensure wheels are true and properly dished.
Make sure that the wheels are properly seated in the dropouts and
that the wheel nuts are tight and secure.
5. CABLES
Look out for any loose cables.
Make sure that every male and female plug is properly connected.
There should be no strain on any wiring near the fork when turning the
handlebars from left to right.
Verify that the wiring on the frame is secure and free from any moving
parts that may damage the wiring. This includes any wires and brake
cable lines near the wheel or other moving parts.
6. DISPLAY
Check that your display turns on and functions properly.
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More information on brakes in our Maintenance & Components section.
TIP
Do not sit on a bike while the kickstand is supporting the bike.
!
4.LIGHTING
Check if the front and rear lights are working properly. Do not cover any
lighting or reflectors.

1. POWERING BIKE ON
• Disengage the kickstand, grab the brake handle to engage
the brakes, and seat yourself on the Super73.
• Switch the battery to the “I” position to turn the bike on.
• Once the display screen is illuminated, the throttle or pedal
assist will be active and you’re ready to ride.
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DANGER!
Batteries that have not been fully inserted and locked can come loose during a ride
and fall out. This can cause a crash and damage the battery.
Do not place the key or any other metal object into the charging port as this can result
in a short circuit, rendering your battery nonchargeable and in need of replacement.
This will void the warranty.
OPERATING THE BIKE
Do not sit on a bike while the kickstand is supporting the bike.
!
2. CHANGING THE INFORMATION VIEWED ON THE DISPLAY
• Quick press “O” button to toggle the information viewed on
the display.
• Speed (mph)
• Range (miles)
• Assist (0-4)
• Total (miles)
Perform brake pad bed-in process before your first ride. For more information, please
see pg. 28.
!
3. OPERATING LIGHTS
• The Super73 RX model comes equipped with a front
headlight and rear brake light.
• To activate the lights, press and hold down the up “^” button
on the display until the lights illuminate. Follow the same
step to turn off the lights.
• The rear light will get brighter when the brake levers are
engaged whether the headlight is on or off.

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3. PEDAL ASSIST
To select your pedal assist mode, follow these steps once the
display has been turned on and you are seated on the Super73:
• Press on the menu “O” button briefly to switch between
display views until “Assist” appears on the screen.
• Press the up “ ^ ” button to increase the pedal assist level. To
decrease the assist level, press the down “v” button. Pedal
assist ranges from -4, with 0 meaning pedal assist is turned
off. The higher the level, the more electric assistance you’ll
get, and the less you’ll have to pedal.
• Level  (ECO) - 25% Speed Power
• Level 2 (TOUR) - 50% Speed Power
• Level 3 (SPORT)- 75% Speed Power
• Level 4 (SUPER) - 00% Speed Power
• Once you begin pedaling, the pedal assist sensor will activate
the motor and you will begin to accelerate to the selected
assist level.
4. BRAKING
• The brake levers are equipped with brake sensors that
cut power to the motor when either of the levers are
compressed. The Z employs Tektro mechanical brake
systems. The right lever will activate the rear brakes when
compressed, and the left lever will activate the front brakes
when compressed.
• The Super73 brake orientation is as follows:
Rear brake = right lever
Front brake = left lever
5. SETTINGS MENU
• Hold down the “O” button on display to activate the settings
menu.
• Settings parameters:
• Contrast (display window contrast 0-00).
• Units (standard is set to mi/F).
• Position (changes the orientation of display if it is on the
left or right side of the bike).
• Back-light (display back-light power 0-00).
• Version is the software version of the system.
• Coin is the battery level inside display.

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7. TURNING OFF THE BIKE
• When you are done riding your Super73, it is important to
turn off the power properly.
• Turn off the bike by switching the power switch on the battery
to the “0” position.
• You can charge the battery while it’s on the Super73, or
by removing the battery from the mount and charging it
separately.
6. CHANGING RIDING MODES
• Your Super73 is equipped with MultiClass Mode selection. The bike defaults
to a Class 2 mode. It is the rider’s responsibility to follow local E-Bike
regulations. Be sure you are up to date with your local motor vehicle codes.
You can find links to more information on E-Bike regulations in the Legal
Requirements section on pg. 8 of this handbook.
• To change the riding mode, follow instructions detailed in the mobile app
controlling your display.
• Once in the app, you can change between the following riding modes:
• Class- Mode: up to 20mph (throttle deactivated, pedal assist only)
• Class-2 Mode: up to 20mph with throttle or pedal assist
• Class-3 Mode: up to 28mph (throttle deactivated, pedal assist only)
• Unlimited Mode: up to 28mph with throttle or pedal assist*
*Please note Unlimited Mode is intended for private property or off-road use
only
More information on switching through Multi-Class Modes in the App section
on pg. 20 of this handbook.
TIP
TIP

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Measuring Sag
The recommended sag of the front fork is 20mm into the travel, which can be measured
with the bumper found on the lower portion of the right stanchion. To measure sag, place
your bike somewhere level where you can safely put your full weight on the bike while
balanced. It is recommended to have a friend help balance the bike during this portion of
adjustment.
• Slide the bumper all the way down to the top of the air chamber.
Then seat yourself on the bike, engage the brakes, and move into
an aggressive standing position with your feet on the pedals.
• Dismount from the bike and measure the amount of travel
between the bumper and the air chamber. If the measurement
is more or less than 20mm, adjust the air assist pressure
appropriately.
Adjusting Air Assist Pressure
Adjustment of air assist pressure will require a shock pump. Use Figure  “suggested
starting air pressure” on pg. 9 to find your recommended air pressure.
• Remove the valve cap on the top left stanchion and connect your
shock pump to the pressure valve.
• Review the current air pressure and adjust according to Figure
. finetune the pressure with the shock pump to your desired
comfort.
• Be sure you remove the shock pump in between adjustments as
leaving it on can affect the active pressure in the suspension.
After completing adjustment, reinstall the pressure valve cap.
The S2 defaults to a baseline setting. Follow the guides below to adjust the suspension to
your desired comfort level. The S2 is equipped with an inverted coil-spring fork with air
assist and the ability to adjust lockout and rebound damping.
Adjusting Lockout
Lockout is adjusted with the dial on the top right stanchion.
• Turning the preload dial clockwise (+) will decrease
compression on the suspension.
• Turning the dial counterclockwise (-) will increase
compression on the suspension.
Suspension Adjustment Guide
Front Suspension Adjustments
If any of the instructions are beyond your skill set, we recommend taking your
Super73 to a certified E-Bike specialist or professional cycle mechanic for
adjustments.
!
Changing suspension adjustment can change the handling and braking characteristics
of your Super73. Never change suspension adjustment unless you are thoroughly
familiar with the suspension system instructions and recommendations, and always
check for changes in the handling and braking characteristics of the Super73 after a
suspension adjustment by taking a careful test ride in a hazard-free area.

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Adjusting Rebound
Rebound is adjusted with the dial located on the bottom of the right stanchion.
• Turn the rebound dial clockwise to slow your suspension rebound
(damper increase).
• Turn the rebound dial counterclockwise to speed up the rebound
(damper decrease).
SUGGESTED STARTING FORK AIR PRESSURE
LBS KG PSI BAR
125 57 70 4.8
145 66 78 5.4
165 75 86 5.9
185 84 94 6.5
205 93 102 7.03
225 102 110 7.6
245 111 118 8.1
265 120 126 8.7
285 129 134 9.2
305 138 142 9.8
325 148 150 10.3
Fork Pressure Limits
Minimum: 70 PSI
Maximum: 150 PSI
Figure 1

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SUPER73 APP
Never ride and adjust settings on your app while in motion. Pull over and practice
safe riding. By operating your bike and the app simultaneously, you put yourself at
risk for collision and serious injury.
!
Each Super73-S2 comes programmed in the Class-2 ride mode, which allows for throttle
operation and pedal assist riding up to 20mph. This allows the Z to be legally ridden on
most bike paths without a license, insurance, or registration.
• Class- Mode: up to 20mph (throttle deactivated, pedal assist only)
• Class-2 Mode: up to 20mph with throttle or pedal assist
• Class-3 Mode: up to 28mph (throttle deactivated, pedal assist only)
• Unlimited Mode: up to 28mph with throttle or pedal assist
For more information on using the Super73 App, please refer to the Super73 App page
https://super73.com/super73-app on our website.
Scan the QR code to download the SUPER73 app!
Unlimited Mode is intended for private property or off-road use only
!