C3STROM ASTRO User manual

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User Manual
Thank you for purchasing this C3STROM e-bike.
ASTRO | ASTRO PRO
Scan QR code below : ASTRO | ASTRO PRO Assembly Video

Using This Manual
This manual contains detailed information about the product and its equipment, as well as
information about the operation, maintenance, and other useful tips for the owner. Please read it
carefully and familiarize yourself with the e-bike before use to ensure safe use and prevent acci-
dents.
This manual contains many warnings and cautions regarding safe operation and the conse-
quences if proper setup, operation, and maintenance are not performed. All information in this
manual should be read carefully and if you have any questions, contact C3STROM immediately.
This manual and any other documents accompanying the e-bike should be retained for future
reference, but all contents of this manual are subject to change without notice.
NOTICE: This manual is not intended to be an extensive reference book about service, maintenance,and / or repairs.
Please consult your dealer for service and technical support. You can find more information about our products or find a
dealer via www.c3strom.com. If you lack assembly expeience, we recommend you seek assembly services from your
local ebike shop or dealer. Proper assembly and safe riding are essential.

CONTENTS
General Information ----------- 1
1.1. Frame Components ------------------- 1
1.2. Size & Specification ------------------- 2
1.3. PAS & Throttle ------------------------- 3
Battery ------------------------------------ 20
4.1. Battery Information ------------------- 20
4.2. Battery Charging ---------------------- 21
4.3. Battery & Charger Safety Warning - 22
Apps & Display --------------------- 14
3.1. App Download ------------------------- 14
3.2. Finger-tip Control --------------------- 15
3.3. Display instructions ------------------- 16
Assembly ------------------------------- 4
2.1. What’s in the box ---------------------- 4
2.2. Assembly Process --------------------- 6
1
2
3
4
5
6
7
8
Warranty -------------------------------- 25
7.1. Warranty terms --------------------- --- 25
7.2. This limited warranty does not cover
---------------------------- 26
7.3. Shipping damage --------------------- 27
7.4. FAQ ABOUT WARRANTY ------------- 27
Maintenance ------------------------- 24
6.1. Cleaning -------------------------------- 24
Tool Kit Check List --------------- 29
Safety & Warning ----------------- 23

1. General Information
General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
1.1. Frame Components
Rear light
Fender
Motor
Chain
Crank Chainwheel Pedal
Disc brake
Front fork
Front light
Handlebar
Throttle
Saddle
Battery
1

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
SIZE
A -- Maximum Seat Height 32.5’’
C -- Seat Length 18.5’’
B -- Standover Height 30.6’’
D -- Handlebar Height 42’’
E -- Bottom Bracket Height 10.5’’
F -- Front-Center 23’’
J -- Head Tube Angle 65°
I -- Total Length 70’’
H -- Wheelbase 47.4’’
G -- Chainstay Length 24.4’’
K -- Top Tube Horizontal 34.6‘’
C3STROM ASTRO / ASTRO PRO Specification
Motor
750W
*Up to 2000W on
OFF-ROAD mode
Derailleur
8-speed
3.5” LCD display
with USB
780Wh / 1040Wh
SAMAUNG 21700 cells
with 4A charger
35A peak
frame-intergrated controller
Half twist throttle 4-piston hydraulic brake
180mm disc
Display
6061 aluminium alloy
Frame
Battery
8 speed left shifter
Shifter
Controller
56T. 170mm
Crank Set
Throttle
Kenda
20×4-1/4
Tires
Brake
1.2. Size & Specification
2

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
1.3. PAS & Throttle
Due to the powerful support of the motor, you will to high speeds faster than when riding a
conventional bicycle. To get used to this, we advise you to use the e-bike in a familiar setting
without too much traffic in the surrounding area when driving it for the first time.
When you start biking, be aware of the electrical that will instantly be provided by the motor.
We advise using the lowest power level when driving off for the first time.
When switching off pedal assistance the e-bike can still be used just like a regular bike. However,
be aware that the lights of the e-bike will not work when driving around without using the
battery.
When set at level 1 or above, the throttle will be on and provides smooth acceleration. If the
throttle, brake lever, pedal assistance, or lighting are functioning abnormally, intermittently, or not
working, please stop using your e-bike immediately.
With throttle on-demand, you can use the throttle from a complete stop, rather than pedaling
first, which can help when riding up steep hills or through an area with lots of stop signs. Howev-
er, we generally recommend always pedaling first and then using throttle wherever possible to
ensure stability.
3

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
2. Assembly
2.1. What’s in the box
Fully wrapped C3STROM ASTRO / ASTRO PRO with foam and cardboard
4

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
2.1. What’s in the box
Pedal L*1
Pedal R*1
Power Converter*1
Charger*1
User Manual*1
4 mm Allen Wrench*1
5 mm Allen Wrench*1
13 / 15 mm DoubleWrench*2
8 / 10 mm DoubleWrench*1
Tool box
5
Pedal L Pedal R
Power Converter
User Manual
Charger
TION
REENTION
Keys
13 / 15 mm Double Wrench
15mm
13mm
13 / 15 mm Double Wrench
15mm
13mm
13 / 15 mm Double Wrench
10mm
8mm
5 mm Allen Wrench
4 mm Allen Wrench

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
2.2. Assembly process
6
a. Place the carton box upside down, and remove the 4 safe buckles
to lift the cover up.
c3strom.com

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
2.2. Assembly process
a. Please loosen the front wheel.
7

General Information Assembly Apps & Display Battery Safety & Warning Maintenance Warranty
b. Use the two 13 / 15 mm wrenches
(both on the 15 mm side) undo the
bolts attached at either end of the
skewer on the wheel.
c. Remove the plastic spacer nestled
between the brake pads on the front
fork on the wheel.
8
15mm
13mm
15mm
13mm