SUPER 73 ZX Quick guide

SUPER73-ZXSUPER73-ZX
ASSEMBLY & MAINTENANCE MANUAL
US & EUROPE MARKETS
EN 2021
*Above image depicts half of european and half of US model. Actual product may differ from image.

2
@SUPER73
@SUPER73EU
Youtube.com/c/Super73
Youtube.com/c/SUPER73Europe
Facebook.com/groups/Super73owners
WELCOME TO THE
SUPERSQUAD
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:
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 Manual 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 www.super73.com for
periodic tech updates. Feedback: [email protected] or
customer[email protected]
This is not to be reproduced wholly or in part without the written
permission of Super73.
©Copyright 2021 Super73, Inc. Revised 11/2021.
North America:
SUPER73, Inc.
16591 Noyes Ave, Irvine,
California 92606, United States
[phone]
support.super73.com
Europe:
SUPER73 B.V.
Industrieweg 61-63
1115 AD Duivendrecht
Netherlands
0031 (0)20 30 800 73
eu.super73.com

3
Contact Information
General Information
Diagram of ZX
Legal Requirements
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
Tires / Wheels
Chain tension
Helmets / Reflectors
Brakes
Battery
Lighting system
Seat
Cleaning
TABLE OF CONTENTS
2
5
6
8
8
9
10
13
14
16
19
20
21
25
26

4
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
GENERAL INFORMATION
Please note the following symbols:
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 of this handbook.
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.
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.
Do NOT ride your Super73 if it has been assembled incorrectly. Maintenance beyond
what the owner’s handbook instructs is to be handled by an E-Bike specialist or
professional cycle mechanic. Riding an incorrectly assembled bike can put your own
safety at risk as well as others.
TIP
!
!
!
EUROPE - PREAMBULE
Super73 electric bikes purchased in Europe and sold for use in Europe have
been tested, certified and are conform to security requirements of EPAC
(Electric Power Assisted Cycle) according to EN 15194, have a maximum
speed of 25 km/h and a 250 Watt motor power output. Principles of
operation of a pedelec:
Your power-assisted bike is “assisted”. This means that, according to the
legislation, you have to pedal continuously for assistance. The assist is
active only during the pedaling movement. The assistance of your bike is cut
beyond 25km/h as required by European regulations.

6
DIAGRAM OF THE SUPER73-ZX
REAR DROPOUT
BATTERY
CHAIN RING
CHAIN GUARD
(US)
CRANK SET
BOTTOM BRACKET
REAR HUB MOTOR
NOT SHOWN (EU MODELS):
10-SPEED GEARING
HEAD LIGHT, REAR LIGHT AND BELL
REFLECTORS
FENDERS
DERAILLEUR

7
DISPLAY (LEFT SIDE)
BRAKE ROTOR
FRONT
DROPOUT
CHAIN RING
PEDALS
RIGHT SIDE: THROTTLE (US)
OR GEAR SHIFTER (EU)
WIRING HARNESS

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.
USA: Visit this website for more information:
https://peopleforbikes.org/our-work/e-bikes/policiesand-laws/
EUROPE & AUSTRALIA: In general, 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-1.amazonaws.com/app/uploads/2015/09/
rules-regulation-on-electric-cycles-in-the-european-union-may-2017.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 weight of 325 lbs (147kg).
!
DANGER!
If the user rides the Super73 beyond its intended use, there may be a risk of an
accident, serious injury, or death and the risk of injury to those around the user.
LEGAL REQUIREMENTS
INTENDED USE
For the latest information on assembly and maintenance,
please visit the support section of
www.super73.com (USA) or eu.super73.com (EU)

9
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
personal injury or damage to the bike.
TIP VIDEO
View our assembly video to follow step-by-step instructions on our website at
support.super73.com or here: https://youtu.be/_vTpHR6x5WQ
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 tubes size is 20”x4.5” for the rear and front tires with Schrader valve.
In the following instructions, “Tighten” or “hand tighten” means tightening a
part with care to not over-tighten and damage threads.
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 electrical
assistance system presents a risk of damage or injury.
DANGER!
!
!
!
If any serious damage has occured to your Super73 during transit, please submit
photos directly to Super73 by emailing our customer service department.

10
ASSEMBLY INSTRUCTIONS
DANGER !
Do not ride with a bike that has not passed 100% safety verification before
each ride as described in the section called PRE-RIDE SAFETY CHECK
A
C D
B
1. HANDLEBAR INSTALLATION
A. Use the 5mm hex wrench to remove the bolts of 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 riders comfort.
D. Cross tighten the handlebar clamp from corner to corner making sure
the clamp is evenly placed, tight, and handlebars do not move.

11
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, the right pedal on the right crank. (Tighten with
recommended torque of 29-34 for pedals)
B. The right pedal is screwed on in a clockwise direction. The left pedal is
screwed on by turning it counter-clockwise.
3. (REAR DERAILLEUR AND GEARING)
If you have a European model or have added speeds
on your bike, make sure to check that your chain
and derailleur is properly aligned by looking at the
derailleur from the rear.
The two pulleys should be lined up exactly underneath
one another, so that the chain runs straight up
from the tension pulley to the jockey pulley, with no
sideways slant. Compare the line of the pulleys with
that of the sprockets above them.
4. 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 20-25 psi (1.38-1.72 bar).
E. Inflate the tube to a max pressure of 35 PSI in order to
ensure the tire is properly seated in the rim.
F. Once properly seated, deflate to a recommended 20-25
psi (1.38-1.72 bar). PSI will vary based on the weight of rider
and type of terrain.
TIP
AB
The inner tube size is 20”x4.5” for the rear and the
front.

12
4. ZX HEADLIGHT INSTALLATION (EUROPE MODELS ONLY)
You will need the following tools:
• 5mm Allen key
• 4mm Allen key
• 10mm hex wrench
• Head light
• Head light bracket
• Bolt & lock nut
!
1. Remove one
screw from the
frame (fork) using a
5mm Allen key
4. Place the headlight
between the two
hooks of the bracket.
Insert the bolt
through both bracket
and headlight.
2. Insert the screw in
the headlight bracket
so that the grooves
are facing upwards.
3. Tighten the screw
with the 5 mm Allen
key. Leave it slightly
loose so that it can
be adjusted later.
5. Place the lock nut
on the other side
of the bolt and use
the 4mm Allen key
to tighten the lock
nut from the other
side with a 10mm hex
wrench
6. Return to the first
screw, adjust the light
so that it is straight.
Tighten it completely
with the 5mm Allen
key
7. Finally, connect
the light cable to the
loose yellow cable
plug on the fork.
Make sure the arrows
on the cables are
facing each other.
Once bike is powered
on, turn on the
lights by pressing
the UP arrow on the
display until the light
illuminates. Follow the
same step to turn off
the lights.
CAUTION:
The small pins in the plug bend easily, take extra care while connecting the cables.

13
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.
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 in the charger into a 120v wall outlet (110-220v EU)
B. Connect the charger cable to the battery charging port.
C. Turn the battery on by pressing the power button. The battery is on when
the power button is illuminated. The battery will not charge unless it is
switched on.
D. The throttle is disabled during the charge sequence and a charge icon will
show 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 and follow 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.
Information on battery care, range, performance in Maintenance & Components.
BATTERY RANGE: Power output will vary depending on battery capacity. For example
if your battery is at 20% 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. More about battery care in Maintenance Section.
TIP
TIP
!

14
!
ASSEMBLY IS FINISHED!
You’re almost ready to ride! Your Super73 should look like below. Before your
first ride, please verify your bike is safe to ride using the Pre-ride safety check.
PACKAGING & RECYCLING
We recommend keeping your bike box packaging
for a few days before recycling it in the paper
recycling bin.
REGISTER YOUR SUPER73
All original owners must register their purchase
on our website to validate your warranty.
Scan these QR codes by hovering your camera
feature with your smart phone:
Or on your browser, select these links
depending on your location:
• USA: super73.com/pages/register
• EU: eu.super73.com/pages/register-product
TIP
!
If you can’t register online, please call or email us for assistance. Write down
below the following information for future reference:
Location or website of purchase: ________________________________________
Date of purchase: _____________________________________________________
Model name: ZX
Bike Serial #: _________________________________________________________
(Located 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.
USA EUROPE

15
1. 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 20-25 psi (1.38-
1.72 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.
Check proper wheel alignment and that derailleur is not bent.
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.
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.
4. LIGHTING (if applicable)
Check if the front and rear lights are working properly. Do not cover any
lighting or reflectors.
5. CABLES
Look out for any loose cables.
Make sure the male and female plugs are 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.
7. KICKSTAND
Make sure that the kickstand is tightly secured, and not rubbing against
the ground or tires.
Do not sit on a bike with a kickstand engaged as this can bend its bracket.
Make sure the brakes have already been applied before getting on to your bike. If
the assistance mode is turned on, your E-Bike will start moving as soon as you push
on the pedal. The unfamiliar push can otherwise cause a fall, hazard, or accident.
PRE-RIDE SAFETY CHECKLIST
DANGER! Use the following checklist before each ride to verify your bike is safe to
ride. Never operate your bike and use your app simultaneously.
!
!

16
1. POWER 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.
Press on the power button on the display until the display
screen is illuminated. The throttle and/or pedal assist is
active and you’re ready to ride.
DANGER! Do not place the key inadvertently or any other metal object into
the charging port as this can result in a short circuit and render your battery
nonchargeable and in need of replacement This will void the warranty.
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.
OPERATING 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)
3. OPERATING LIGHTS (INCLUDED IN EUROPE)
The Super73 ZX model in Europe comes equipped with a front
headlight and rear light.
Activate the lightd by pressing the UP arrow on the display
until the light illuminates.
Follow the same step to turn off the lights.
NOTE: Lights can also be turned ON/OFF via the app.

17
4. 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 1-4, 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 1 (ECO) - 25% Speed Power
Level 2 (TOUR) - 50% Speed Power
Level 3 (SPORT )- 75% Speed Power
Level 4 (SUPER) - 100% 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.
5. BRAKING
The brake levers are equipped with brake sensors that
cut power to the motor when either of the levers are
compressed. The ZX employs the 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
6. SETTINGS MENU
Hold down the “O” button on display to activate the settings menu.
Settings parameters:
• Contrast (display window contrast 0-100)
• 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)
• Backlight (display backlight power 0-100)
• Version is the software version of the
system.
• Coin shaped graphic: the battery level
inside display.

18
7. CHANGING RIDING MODES
Your Super73 is equipped with a multi-class mode selection. The bike defaults to
a Class 2 mode in the USA, and Mode 1 in Europe.
It is the rider’s responsibility to follow local E-bike regulations. Be sure that you
are up to date with your local motor vehicle codes.
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:
USA / North America
Class 1 - pedal assist only at 20 mph max speed.
Class 2 - throttle operation and pedal-assist at 20 mph max speed.
Class 3 - pedal-assist only, at 28 mph max speed.
“Unlimited” - up to 2000 watts of power and throttle speeds above 28mph**
This mode is exclusively for riding off public roads and on private property.
Europe, 4 Riding Modes
Mode 1/ Default Mode: EPAC (Electrically Power Assisted Cycles) with Pedal Assist
at up to 25 km/h 250-watt motor output (street legal for all European countries)
For Modes 2-4, please refer to our website: https://eu.super73.com/pages/off-
road-experience-ore. Notes that modes 2-4 are exclusively for riding on private
property.
In each riding mode, you have 4 Pedal Assist Levels (PAS). In total, there are 16
configurations you can choose from. For example, you can be in Riding Mode 1:
PAS Level 3.
To activate the “Unlimited Mode”, users need to acquire the Off-Road Experience
(ORE kit) as well as activate that mode on the Super73 App.
When the bike is turned off, the next time it is turned on it will once again
default to the EPAC 250w Riding Mode 1 which will limit the power (250w), speed
(25 km/h) and will disable the throttle if one has been added to the bike.
To activate it again, you need to enable it on the app.
TIP
TIP
TIP
!
8. TURNING OFF THE BIKE
Turn the power off correctly by first flipping 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.

19
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.
!
In North America
Each ZX bike comes programmed in the Class-2 ride mode, which allows for throttle
operation and pedal-assist riding up to 20mph. This allows the ZX to be legally
ridden on most bike paths without a license, insurance, or registration.
• Class-1 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
In Europe or for models sold without the throttle
Please check our website for instructions or ask your dealer.
Link: https://eu.super73.com/pages/off-road-experience-ore

20
GENERAL WARNINGS
Like any sport, cycling involves risk of injury and it is the rider’s responsibility
to assume potential risks and injury involved when riding. By choosing to ride
a bicycle, you assume the responsibility for that risk. You need to know and
practice the rules and safety regulations of riding this bicycle. Proper use and
maintenance of your bicycle reduces risk of injury. Check your local state or
country regulations for electric bike laws. For example, check the minimum age
for using an electric bike as this differs in various regions.
Riders must have the physical condition, reaction time, and mental capability to
ride and manage traffic, road conditions, and sudden situations. Also, respect
the laws governing E-bike use in accordance with each region. If you have an
impairment or disability (i.e. visual impairment, hearing impairment, physical
impairment, cognitive/language impairment, seizure disorder, etc.), consult your
physician before riding any bicycle.
NOTICE: Only take on tasks for which you have the necessary knowledge and tools. It
is recommended that users pay special attention to all of the general operating rules
below before operating their Super73 bike.
• When riding, obey the same road laws as all other road vehicles, including giving
right of way to pedestrians and stopping at red lights and stop signs.
• For additional information, contact the road traffic authority, police department
or Department of Motor Vehicles in your state or country.
• Use correct hand signals to indicate turning or stopping.
• Concentrate on the path ahead. Avoid potholes, gravel, wet or oily roads, curbs,
train tracks, speed bumps, and other obstacles.
• Walk your bike across all train tracks.
• Expect the unexpected, such as opening car doors or cars backing out of
driveways
• Be aware at intersections and when preparing to pass other vehicles or other
cyclists.
• Familiarize yourself with all the bike features. Practice using the brakes and
throttle.
• If you are wearing loose pants, secure the bottom using leg clips or elastic bands
to prevent them from being caught in the chain.
• Wear proper riding clothes and avoid wearing open-toe shoes.
• Don’t carry passengers or cargo that will interfere with your ability to control the
bicycle.
• Never ride and use the app simultaneously. Pull over and adjust any settings or
set your destination in the navigation in a safe spot.
• Don’t use music devices such as headphones while riding. This will restrict your
hearing and impair your awareness of your surrounding environment.
• Maintain a comfortable stopping distance from all other objects, riders, and
vehicles. Safe braking distances are based on forces, such as weather and lighting
conditions among other variables.
!
!