RBSM Viper User manual

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Dear Customer
In purchasing this bicycle you have chosen a product of high quality and technology. Each com-
ponent of your new bicycle has been designed, manufactured and assembled with great care
and expertise.
These operating instructions contain a wealth of information on the proper use of your bicycle,
its maintenance and operation as well as interesting information on bicycle design and engineer-
ing. Please read these instructions thoroughly. We are sure that even if you have been cycling
all your life you will nd useful and detailed information.
Bicycle and E-bike technology has developed at a very rapid pace during recent years. There-
fore, before setting off on your new bicycle, be sure to read at least the chapter “Quick start”
rst.
The individual steps are subsequently explained in detail, supplemented by illustrations and
diagrams.For more detailed information on your E-bike, refer to “Technical data”.
Even a manual as big as an encyclopedia could not describe every possible combination of
bicycle models and components or parts on the market. These operating instructions therefore
focus on your newly purchased bicycle and standard components and provide useful informa-
tion and warnings.
When doing any adjusting or servicing, be aware that the detailed instructions and information
provided in these operating instructions only refer to this city/road/mountain bicycle or E-bike.
The information included here is not applicable to any other bicycle type. As bicycles and E-bike
come in a wide variety of designs with frequent model changes, the routines described may re-
quire complementary information. Comply also with the instructions of the parts manufacturers,
which you can nd on the enclosed information.
Be aware that these instructions may require further explanation, depending on the experience
and/or skills of the person doing the work. For some jobs you may require additional (special)
tools or supplementary instructions. This manual cannot teach you the skills of a bicycle me-
chanic.
This manual cannot teach you howto ride. Please be aware that cycling is a hazardous activity
that requires the rider to stay in control of his or her bicycle at all times.
Like any sport, cycling involves the risk of injury and damage. Keep this in mind. When you
decide to ride a bicycle or E-bike you need to accept the risk inherent to cycling.
WARNING:
This symbol indicates an imminent risk to your life or health, unless you comply with the
corresponding handling instructions, given or take preventive measures.
CAUTION:
This symbol warns you of incorrect actions that could result in damage to property and
the environment.
NOTE:
This symbol provides you with information about how to handle the product or refers to
a passage in the operating instructions that deserves your special attention.

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Content
The bike and its components....................................................................................5
I. SAFETY WARNINGS....................................................................................7
I-1. Basic safety information.................................................................................7
I-2. For your own safety .......................................................................................7
I-3. Jnformation for parents and legal guardians .................................................7
I-4. Safety in road trafc.......................................................................................7
I-5. Bike safety .....................................................................................................8
II. Quick Start Guide: .......................................................................................9
III. Setting up the bike for the rider ...............................................................10
III-1. Fitting the pedals .........................................................................................10
III-2. Adjusting the seat position...........................................................................10
III-3. Adjusting the handlebar position..................................................................12
IV. Frame ..........................................................................................................13
V. Headset.......................................................................................................13
VI. Fork .............................................................................................................14
VII. Chain rings .................................................................................................14
VIII. Bottom bracket and cranks ......................................................................14
IX. Wheels ........................................................................................................14
IX-1. Checking the wheels....................................................................................14
IX-2. Checking the hubs .......................................................................................15
IX-3. Checking the rims ........................................................................................15
IX-4. Tyres............................................................................................................15
X. Brake, brake levers and brake systems ..................................................16
X-1. Important information and precautionary measures ....................................17
X-2. Brake lever...................................................................................................17
X-3. Disc brakes ..................................................................................................18
XI. Bike gears...................................................................................................20
XI-1. Derailleur gears ...........................................................................................20
XI-2. Shifting lever ................................................................................................21
XI-3. Rear derailleur .............................................................................................22
XII. Bike chain...................................................................................................23
XIII. Electric system ..........................................................................................24
XIII-1. E-bike fundamental legal principles .............................................................24
XIII-2. These statutory requirements apply for a E-bike .........................................24
XIV. Control panel (display)..............................................................................25
XIV-1. Product model..............................................................................................25
XIV-2. Specications...............................................................................................25
XIV-3. Appearance and Size ..................................................................................25
XIV-4. Function Summary.......................................................................................26

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XIV-5. Features.......................................................................................................26
XIV-6. General Operation .......................................................................................27
XIV-7. Settings........................................................................................................31
XIV-8. Quality Assurance and Warranty Scope......................................................34
XIV-9. Operation Cautions......................................................................................35
XV. Assistance by the electric motor .............................................................36
XV-1. Operating principle of assistance.................................................................36
XV-2. Distance.......................................................................................................36
XVI. Battery ........................................................................................................36
XVI-1. Straightforward charging..............................................................................37
XVI-2. High degree of safety due to battery management......................................37
XVI-3. Straightforward storage ...............................................................................37
XVI-4. Battery information system ..........................................................................38
XVI-5. Service life and warranty .............................................................................38
XVI-6. Battery Holder..............................................................................................38
XVII. Charger .......................................................................................................39
XVII-1. Structure Diagram of Charger......................................................................39
XVII-2. Charge Curve Graph ...................................................................................39
XVIII. Care and maintenance of the bike ...........................................................40
XVIII-1. Care .............................................................................................................40
XVIII-2. Wear parts ...................................................................................................40
XVIII-3. Tires.............................................................................................................41
XVIII-4. Rims in conjunction with rim brakes ............................................................41
XVIII-5. Brake pads...................................................................................................41
XVIII-6. Brake discs ..................................................................................................41
XVIII-7. Bike chains or toothed belts.........................................................................41
XVIII-8. Chain rings, sprocket wheels and jockey wheels ........................................41
XVIII-9. Lamps of lighting set....................................................................................41
XVIII-10. Handlebar tapes and handle grips...............................................................42
XVIII-11. Hydraulic oils and lubricants ........................................................................42
XVIII-12. Gear-shift and brake cables.........................................................................42
XVIII-13. Paint nishes ...............................................................................................42
XVIII-14. Bearings.......................................................................................................42
XIX. Regular inspections ..................................................................................42
XX. Technical data............................................................................................43
XX-1. Maximum permitted gross weight of bike ....................................................43
XX-2. Tightening torques for screw connections ...................................................43
XX-3. Tires and tire pressure.................................................................................44
XXI. Warranty conditions ..................................................................................44
XXI-1. Prerequisites for the validity of warranty claims...........................................45
XXI-2. Warranty exclusions ....................................................................................45

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The bike and its components
Mud Adder
Whole Vehicle Mark
1. Tire 2. Rim 3. Spoke 4. Front fork 5. Stem
6. Saddle post clamp 7. Saddle post 8. Saddle 9. Battery
10. Flywheel 11. Derailleur 12. Chain 13. Crank 14. Pedal
15. Disc Brake 16. Handle bar 17. Hand grip 18. Derailleur shifter
19. Displayer 20. Brake lever

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Whole Vehicle Mark
1. Tire 2. Rim 3. Spoke 4. Front fork 5. Stem
6. Saddle post clamp 7. Saddle post 8. Saddle 9. Battery
10. Flywheel 11. Derailleur 12. Chain 13. Crank 14. Pedal
15. Disc Brake 16. Handle bar 17. Hand grip 18. Derailleur shifter
19. Displayer 20. Brake lever
Viper

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Preface
Keep in mind that every bicycle type is built for a specic intended use. Be sure to use your bi-
cycle only according to its intended use, as it may otherwise not withstand the stress and would
fail and cause an accident with unforeseeable consequences!
1. City/Road E-BIKE are intended for hard-surface roads, i.e. for tarred roads and bicycle
lanes or gravel eld tracks. Observe the trafc rules when cycling on public roads. City/road
bicycle are not suitable for off-road use. Using bicycle off-road can result in crashes with
unforeseeable consequences.
2. Mountain bike are suitable for off-road use; they are, however, not designed for dual, dirt,
downhill and free-ride cycling etc.
All regulations that apply to bicycles, also apply to E-bike, i.e. they are allowed to or must use
cycle paths without any restrictions. Wearing a helmet is recommended, but not compulsory.
I. SAFETY WARNINGS
I-1. Basic safety information
Please read all the warnings and information in this User Manual carefully before using the bicy-
cle. Keep this User Manual near your bicycle for ready reference. If you lend this bicycle over to
someone else, don’t forget to give them the User Manual as well.
I-2. For your own safety
WARNING:
• Wearbrightclothingorreectiveelementssothatotherroaduserscanseeyouin
good time.
• Wear shoes with a stiff, and whenever possible, non-slip sole.
• Wearclose-ttingclothingonyourlegs,orweartrouserclips.
• Wearprotectiveclolingsuchasrobustshoesandgloves.
I-3. Jnformation for parents and legal guardians
NOTE:
• Make sure ttiat your child has been taught, and also understands, how to handle the
bike safely and responsibly in the environment in which it is going to be used.
• Explain to your child how to operate all the brakes, and also how they work and any
special features.
• As the legal guardian, you are responsible for the safety of your child and any dam-
age he/she may cause when cycling. You should therefore make absolutely sure that
the bike is in technically sound condition and adjust it regularly to Itie size of the
child.
I-4. Safetyinroadtrafc
NOTE:
• Observetheapplicabletrafcregulations.
• Never ride with no hands!
• In some countries children below a certain age must ride on the pavement and must
also dismount when crossing the road. Please familiarize yourself with the applicable

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regulations.
• Adjust your handling on wet or slippery roads; ride more slowly and brake carefully
and in good time as you will require a much greater braking distance.
• Adoptaspeedthatreectstheterrainaswellasyourridingability.
• Do not listen to music through headphones when cycling.
• Do not cycle when using a mobile phone.
• Use designated cycle paltis when not using public roads.
• Be ready to brake, especially if you are not sure what lies ahead or are riding downhill
I-5. Bike safety
NOTE:
• Only bikes that have been approved for use in public places, as per the applicable
regulations (e.g. StVZO in Germany), may be used.
• Observe the maximum permitted gross weight of the various bike types, as this could
otherwise lead to breakage or failure of safety-relevant components. The brake sys-
tem is also only designed for ttie maximum permitted gross weight of the bike. For a
list of the maximum permitted gross weights, refer to bike “Technical data’.
The gross weight is the sum of the weight of the bike + weight of the rider + weight of
the luggage. The gross weight also includes towed weights such as trailers.
• If you notice that a part is damaged or warped, do not use the bike until you have had
the part replaced as otherwise parts that are important to operation of the bike may
fail.
• Observe the maximum load-carrying capacity of the rack. This is marked on tine rack
directly.
• Ifyoumaketechnicalchangestoyourbike,takethenationaltrafcregulationsand
applicable standards into account. Bear in mind that this could render your warranty
invalid.
• Only replace electrical components on your bike with type-tested parts. Disassemble
the battery pack and modify the unit or your warranty will be void and you will be
responsibleforthemodication.
• Only ride with suitable lighting in unfavorable lighting conditions such as fog, rain,
dawn light or in the dark.
• Perform care and maintenance on your bike regularly. In doing so, check important
components, particularly the frame, fork, wheel suspension, handlebar, handlebar
stem, seat post and brakes for warping and damage. If you notice changes such as
cracks, bulges or warping, have your bike checked by a specialist cycle shop before
using again.

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II. Quick Start Guide:
8stepstogettingontheroad(Beforetherstride)
CAUTION: E-BIKE OWNERS:
Donotusethebatteryforthersttimeuntilithasbeenfullychargedatleastonceoryou
may decrease its perform¬ance (see instructions below).
1. Unpack the bike and check the contents
Carefully remove your bicycle and all other items from the box. You may nd it easier to open
the side of the box and roll the bike out. Ask for assistance if required.
Please check that ttie following contents, as well as any accessories you may have ordered, are
present:
- Correct model, size and style of bicycle
- Pair of pedals (marked L and Ron the end of the spindle) (Except Foldable Bike)
- Bike manuals
- Battery Charger (E-bike Only)
2. Charge the battery (E-bike Only)
Once the bike is out of the box, put the kickstand down. You can charge the battery pack on
or off the bike. To remove the battery, insert key into the keyhole near the battery and turn to
unlock, pick out battery.
NOTE: Connect the charger to the bicycle when it is not used. This will lengthen the life of the
battery pack.
1. Connect the charger to the mains voltage. The charge indicator of charger will show green.
2. Connect itie plug of 1he charger to the contact point of battery pack, the charge indicator of
charger will shew red.
3. When the charge indicator of charger show from red to green. The battery pack is full.
4. Remove the charger before you start cycling.
NOTE: The battery does not have to be completely discharged before it is recharged. The Lith-
ium battery has no ‘ memory’ and therefore can be charged at any time. It is perfectly
acceptable to recharge the battery after a short ride so that the battery is fully charged
before the next ride.
3. Attach the pedals (If need)
Screwing the right pedal into the left crank arm and/or vice versa will seriously damage pedal
and/or crank arm Itireads and void the warranly.
Apply grease to the threaded end of each pedal. Take care to put ttie correct pedal on each
crank arm (Land R are marked on the ends of the pedal spindle) and carefully tighten using the
supplied pedal wrench. Both pedals (each side L and R) thread toward the front of the bike to
tighten, and toward tine back of the bike to loosen.
4. Acljust the handlebars
Holding the tire in place, straighten the handlebars by loosening the nut(s) on top of the han-
dlebar stem or the two nuts on either side of handlebar stem witti an Allen key. Then align the
handlebars witti the frame and front tire. Tighten the single nut at top of the handlebar stem or
tighten the two nuts on either side of handlebar stem depending on your model. To adjust the
handlebar tilt or height, loosen the nut(s) on the side or front of the handlebar joint and adjust
the handlebars to a comfortable position before tightening. Consult the manual to determine the

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correct handlebar height. Check to make sure the brake levers, gear shifts, displayer, bar ends
and other parts attached to the handlebars are positioned comfortably. These can all be adjust-
ed using one of the included Allen keys.
5. Adjust the seat
Using an Allen key, loosen the nut on the side of the seat post clamp. Straighten and set the
saddle to the correct height and tighten the seat post clamp. If you are not sure what the ideal
height is, refer to the manual for guidance. Do not set the seat so high that the max guide line
on the seat post is visible.
6. Check and adjust the tire pressure
Check the tire pressure and inate to proper pressure marked on the tire sidewall.
7. Power on the bike (E-bike only)
Before you ride, insert the battery in the battery holder until it locks in place, and remove the
key. Turn on the bike’ s pedal assist system the handlebar control unit. You should not be pedal-
ing when turning on the power. If the battery is fully charged, all lights next to the power button
will be lit. See manual for more information on modes. As you pedal, the motor will provide
assistance at the selected power level
8. Check the lights
Check light function. See manual for more information on how to turn on/off.
After its initial break-in period, you might notice that frie shifting and braking need adjustment.
This is typical of all new bicycles and simply reects that cables have stretched or their housings
have seated themselves into nal position. To keep running at peak performance, we recom-
mend that you take your bicycle to your local bike shop as soon as you notice inconsistencies in
your gears or brakes or experiencing any other difculties.
III. Setting up the bike for the rider
III-1. Fitting the pedals
• Coat both pedal threads with lubricant (grease).
NOTE: The left pedal has a left-handed thread which is normally indicated by an “L” embossed
on the axle. The right pedal has a right-handed thread which is normally indicated by an
embossed “R”.
• Screw the left pedal anticlockwise into the left crank.
• Screw the right pedal clockwise into the right crank (on the side of the bike chain).
III-2. Adjusting the seat position
III-2.1: Adjusting the bike saddle
The seat position is decisive for your well-being and cycling performance