SachsenRad E-Racing Bike R8 Flex II User manual

User Manual
with E-Bike pass and maintenance log
SachsenRad E-Racing Bike R8
Flex II
Product number: BB12114 / BB12115

Inhalt
VIDEO INSTRUCTIONS 4
E-BIKE ID / BIKE PASS 5
1. UNPACKING AND ASSEMBLY INSTRUCTIONS 6
2. ASSEMBLY 7
2.1 Before assembly 7
2.2 Required tools 8
2.3 Installing the front wheel 8
2.4 Fitting the handle bar 9
2.5 Aligning the steering head bearing and stem 10
2.6 Installing the pedals 10
2.7 Fitting the saddle 11
2.8 Adjusting the saddle height 12
2.9 About the brake settings 12
2.10 Note on chain tension 12
2.11 Lighting 12
2.12 Removing and inserting the battery pack 13
2.13 The suspension fork 14
3. OPERATION AND FUNCTIONS 14
3.2 Braking with the E-Bike 14
3.3 The control display 15
4. E-BIKE Battery 18
4.1 Battery - charge level indicator 18
4.2 Battery use, safe storage and handling 18
4.3 After use 19
4.4 Charging 19
4.5 Factors inuencing the range 20
4.6 Range optimisation 20
5. BEFORE YOUR FIRST RIDE 20
6. MAINTENANCE 21
6.1 Wheels 22
6.2 Chain 22
6.3 Tyres 22
6.4 E-Bike rear wheel hub motor 23
6.5 Brake system 23
7. SAFETY INSTRUCTION 23
8. SERVICE BOOKLET 24
9. F.A.Q. - Frequently asked questions 25
10. DATA SHEET 27
11. DECLARATION OF CONFORMITY 27
12. DISPOSAL 27
13. IMPRINT 28
14. WARRANTY 28
15. RETURN RECEIPT 31

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Thank you for purchasing our product!
Please read these instructions carefully.
Cycling is a natural part of a modern, health-conscious lifestyle. People are travelling longer and longer and the
roads for riding are more complicated. Due to the physical differences, riding habits and handling characteristics
of each cyclist, especially when riding uphill or long distances, cycling can be very strenuous. Our e-bike was
specially designed to solve these problems!
This e-bike is a combination of a high-quality lithium battery and a high-end bicycle. Go faster and further with
more fun: It is the ideal companion for your tness programme, for leisure time and for the ways that need to
be done.
Important notes
This manual contains important safety, performance and service information.
Please ensure that you have read and understood the following warnings and precautions before using the pro-
duct for the rst time.
If you lend your e-bike to another person, ask them to read this manual to minimise the chance of accidents.
WARNING: Wear a suitable and qualied helmet while riding and wear uorescent or reective clothing at night.
WARNING: Your existing insurance policies may not cover everything that could occur when using an e-bike.
Please consult your insurance company or your insurance broker. Note: This manual does not cover all possible
complications that may occur while riding. Please also read the F.A.Q. to solve any problems with the e-bike.
For more information, please contact your dealer. Please also contact your dealer or nd a professional service
technician if repair or maintenance is required. Please observe all warnings in this manual, read and understand
the contents before using your bike.
WARNING: Warnings indicate that signicant property damage, serious injury or death to you or others may
occur. Please be sure to follow the instructions.

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VIDEO INSTRUCTIONS
Under the following link you will nd video instructions for assembly on YouTube
https://www.youtube.com/watch?v=Y1pG6k6E--Y
In case of a return, please contact our customer service rst. In the case of a return shipment, please ensure that
it is dismantled properly. We also have a short video online for you:
https://www.youtube.com/watch?v=zJ2FOVUJSYw
Under the following link you will nd a video tutorial on how to adjust the brake system
https://youtu.be/Tcc8BmI8occ
NOTE ON THE PICTURES
Pictures and graphics in the manual may differ from your actual product as the R6 is manufactured in several
versions. The pictures are intended as supplements to the text and for better under-standing.

5
E-BIKE ID / BIKE PASS
PLEASE COMPLETE THE FOLLOWING E-BIKE PASSPORT, IN MINIMAL FORM, CAREFULLY IN YOUR OWN
INTEREST!
* THE FRAME NO. IS LOCATED ON THE FORK SHAFT TUBE (BEHIND THE HEADLIGHT)
FRAME NO.*
MODEL
TYPE
ENGINE (REAR/CENTER)
SIZE (IN INCHES)
COLOR
GEAR SHIFT
SPECIAL
EQUIPMENT
OWNER
SELLER
PURCHASE DATE

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1. UNPACKING AND ASSEMBLY INSTRUCTIONS
Tip: Your e-bike is slightly heavier than a normal bike. It is best if two people lift it out of the box.
Required tools and aids (recommendation)
- Tool kit (supplied, see 2.2)
- Blanket or old carpet (to prevent the oor or the e-bike from being scratched during assembly)
Please read the following instructions carefully before unpacking and assembling your e-bike and follow the
recommended sequence.
1. Carefully open the packaging box (to avoid injury, please wear gloves).
2. Carefully remove the bike from the box, preferably in pairs.
3. Place the bike on a blanket to avoid scratching the oor and the bike.
4. Take all the parts out of the large box, including the accessories box.
5. Carefully cut the various cable ties. By doing so, do not accidentally damage the bike, paint or tyres or lose
accessories.
6. Remove all protective material.
7. Remove the e-bike battery from the packaging or from the e-bike battery sled and charge it for at least 10-12
hours rst. Please read sections 5.2 and 5.3.
(Tip: The battery must be charged for at least 12 hours before rst use. Please read section 5.2 and section 5.3. )
Remarks: Upgrading with accessories, attachments or tampering with the control units.
WARNING: If you need to upgrade parts or add accessories, beware of the following: Before attaching parts or
accessories, make sure that the specications and dimensions match. Please check with your dealer if necessa-
ry. Parts with different specications can be tted but there is a major safety risk.
WARNING: Incorrect installation and use of parts not supplied with the e-bike and improper modications to the
original condition of the e-bike may result in signicant property damage or the voiding of any warranty or gua-
rantee claims. Even accidents, serious injuries or death can be the result. If you wish to upgrade or add further
parts or accessories, please contact your dealer or a suitable expert. They can give you information about this.
WARNING! If you replace parts of the e-bike, upgrade parts or add accessories, please note that such changes
may not have the same safety qualications, so there is a certain safety risk.

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Designation of the e-bike parts
1. Saddle
2. Seat post
3. Quick release saddle
4. Rear brake
5. Front wheel / tyre
6. Front brake
7. Pedals and chainring
8. Suspension fork
9. Battery slides
10. Drive chain
11. Rear wheel / tyre
12. Sprocket cassette
13. Motor
14. Battery charging connection
15. Bicycle handle bar
16. Left hand brake lever (rear brake control)
17. Right brake lever (front brake control)
18. Front and back light
2. ASSEMBLY
2.1 Before assembly
WARNING: Incorrect assembly of your e-bike can cause signicant damage to the bike and even personal injury.
If you are not sure whether your assembly is correct, please contact your dealer.
WARNING: The motor, controls, sensors, battery and various cables on your bike must not be used for other
purposes. Do not disassemble or modify [adjust] these parts as this may cause serious damage to them, voiding
the warranty. It may also harm your personal safety. If you need assistance, please contact your dealer.

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2.2 Required tools
3x allen key
1x multi-open-end spanner
1x screwdriver
OT INCLUDED IN DELIVERY:
Air pump with car valve
Please bring the tyre pressure of the front and rear wheel to at least 2.8 bar with the help of an air pump
BEFORE THE FIRST RIDE. Attention: Tire pressure should not be higher than 3.5 bar!
Note: For transport reasons, we can only deliver the e-bike with very low tyre pressure. Do not ride without rst
inating the tyres!
2.3 Installing the front wheel
Remove the black plastic covers on the left and right of the front wheel that were used to secure it for transport.
Carefully loosen the cable tie on the spoke with which your quick-release axle is attached.
Unscrew the nut of the quick release axle including a spring, put the quick release axle through the axle of the
front wheel.
Now carefully insert the front wheel between the legs of the suspension fork. Pay attention to the direction of

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the wheel. The brake disc must be on the side of the brake caliper. Carefully insert the disc into the brake calliper
parallel to the wheel in that manner that no damage to the brake or brake disc is inicted.
When everything is set correctly, slide the spring back onto the axle and carefully screw the grip nut onto your
front axle until the quick release can be ipped over hand-tight, thus holding the wheel rmly in the mount.
Now let the wheel turn by hand and check that it sits and runs correctly. Check and test the front brake. The ins-
tructions for adjusting the brakes can be found under section 2.5. If everything works, your front wheel should
now be correctly mounted.
2.4 Fitting the handle bar
Fig.1 Fig. 2 Fig. 3
Now you shave to mount the handlebar and then readjust the steering head bearing. First loosen the four bolts
of the stem (Fig.1).
NOTE: The stem is designed differently on some versions.
Now place the handlebars in the stem shell (please note the direction and run of the cables and Bowden cables)
and screw the stem back on as shown in Fig. 2. Before doing so, align the handlebar centrally with the stem
and tighten the four hexagonal bolts crosswise using the tool supplied. Tighten the bolts evenly and carefully.
ADJUSTING THE TILT OF THE HANDLEBAR: First loosen the clamping spindle screws of the handlebar sleeve
(Fig. 1) with the appropriate hexagon socket spanner. Adjust the angle of inclination of the handlebar by turning
the handlebar forwards or backwards around its own axis by hand. Tighten the clamping spindle screws again.

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2.5 Aligning the steering head bearing and stem
Note: This step may differ for your model and may not be necessary because it is already pre-assembled.
Note: The handlebars have not yet been mounted in the illustration, this is for the clarity of the graphic.
Please stick to the assembly sequence described.
Now that the handlebars are installed, you still have to turn the stem 180 degrees so that the suspension fork and
handlebars are in the correct position. To do this, rst detach the rubber screw cover (C) and loosen the underly-
ing screw (C) with the appropriate tool. Open the horizontal ones, stem screws ((A) and (B) in the illustration) so
that the steering head bearing can move freely when turning and tightening. Now align the handlebars with the
stem at a 90-degree angle to the suspension fork off by rotating it by 180° (orientate yourself on the cables and
Bowden cables whether to the left or right). The arrows (1) and (2) describe the directions of the stem and the
suspension fork. On the left The picture shows the condition as delivered and the one on the right shows the nal
alignment of the assembly. When everything is correctly aligned, tighten the single cap screw (C) until the steer-
ing head bearing has no more play but still easy to move. Then you can unscrew the two horizontal screws of
the handlebar stem once from the left (A) and once from the right (B) until everything forms a unit. Finally stuck
Put the rubber screw cover (C) back on the hex screw from above.
2.6 Installing the pedals
1. Please fasten your bicycle. It is best if two people hold it so that the chain and crank can turn smoothly.
2. Take the pedals out of the packaging and sort them. „R“ stands for the right foot, the „L“ is the left foot.
3. Align the foot thread with the mounting hole on the crank, tighten the right pedal clockwise and the left pedal
anticlockwise.