Ruff Cycles Ruffian Installation instructions

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ORIGINAL OPERATING MANUAL

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Manufacturer:
RUFF CYCLES GmbH
Im Gewerbepark B69
93059 Regensburg
Germany
info@ru-cycles.com
.ru-cycles.com
V 2.0 February 2023
Layout, photographs and text: RUFF CYCLES GmbH, Regensburg, Germany
Texts were provided with courtesy of HNF GmbH
The mentioned brand names are subject to copyrights and are the property of their legitimate owners
even without special indication. Any reprint or copy, even only in extracts, is only permied with our
expressed wrien consent. This manual is subject to misprints, errors and technical alterations. Please
note that the illustrated product may be dierent from the delivery condition of the product.

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CONTENTS
1. Your Vehicle 7
1.1. Intended Use 7
1.2. Vehicle Overview 9
1.3. Delivery Scope 10
1.4. Assembly of Accessories 10
2. Commissioning 10
2.1. Handlebar Alignment 10
2.2. Pedal Assembly 11
2.3. Seing the Saddle Distance 12
2.4. Removal/Installation of the Baery 13
2.5. Switching ON/OFF the Drive 13
2.6. Adjusting Support Level 14
2.7. Switching ON/OFF the Lamp 14
2.8. Initial Engagement of Brake Discs 14
3. Before Each Ride 15
3.1. Checking the Tires 15
3.2. Checking the Brake System 15
3.3. Checking the Drive Belt 16
3.4. Baery: Checking the Fixation and Charging Status 16
3.5. Checking the Fork 17
3.6. Checking the Screw Connections 17
3.7. Checking the Lights 17
4. Operating the Bike 18
4.1. Gear Hub 18
4.2. Drive Unit 19
4.2.1. Belt Drive Unit 19
4.3. Brake System 20
4.4. Side Stand 20
5. Ergonomic Seing 21
5.1. Seing Saddle Position and Inclination 21
5.2. Brake Lever 21
5.2.1. Adjusting Brake Lever Position 21
5.2.2. Brake Grip Angle 22
5.2.3. Adjusting Brake Lever Distance 22
6. Maintenance 23
6.1. Wear Parts List 23
6.2. Recommended Maintenance Intervals 24
6.3. Aer an Accident 25
6.4. Baery 25
6.5. Tires 26
6.6. Changing Tires/Tubes 26
6.6.1. Dismounting the Front Wheel 26
6.6.2. Dismounting the Rear Wheel 27
6.6.3. Changing Tires/Tube 28
6.6.4. Installing the Front Wheel 28
6.6.5. Installing the Rear Wheel 29
6.7. Seing the Shier Cable Play 30
6.8. Brakes 30
6.8.1. Wear of Brake Pads and Discs 30
6.8.2. Checking the Brake Pads 31
6.9. Seing the Headlight Range 31
7. Cleaning and Maintenance 32
8. Transport on/by Car 33
9. Technical Data 34
9.1. Component List 34
9.2. Weights 35
9.3. Torque of Screws 35
10. Liability for Material Defects 36
11. EC Declaration of Conformity 37
12. Disposal 38

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We congratulate you on the purchase of a Pedelec with BOSCH driving techno-
logy. You have decided for a state-of-the-art means of transport, which allows
you brand-new mobile options. We put greatest importance on the technical
quality of the single components of your Pedelec1, ensuring that you will enjoy
your bike for many years.
The Pedelec is a bicycle with electrical power assistance for the driver. This aid
is adjusted via a controller that evaluates the data through three sensors (speed,
step rate and torque), regulating the engine according to the selected support
level. When reaching a speed of 15.53 mph (25 km/h), the electrical engine
switches o. But driving at a speed over 15.53 mph (25 km/h) by oneself is also
possible.
The Pedelec is lawfully equivalent to the bicycle. No permit or license plate are
required. The driver does not need a driver license. We do recommend that you
wear an appropriate helmet and goggles for your own safety.
1 Pedal Electric Cycle
1. YOUR VEHICLE
YOUR VEHICLE
Content and Symbols in this User Manual
This User Manual contains important information for enhancing safety and pro-
longing service life of the Pedelec as well as lasting fun with your The Ruan.
Any neglect of the contents of this User Manual may lead to damages to the
vehicle as well as injuries.
The following symbols are used in the User Manual:
Important Information!
Warning!
This symbol indicates a possible danger.
Please observe the safety instructions!
Information
Here, you will find useful information on the maintenance of the product
The User Manual of your The Ruan is constantly checked and updated. This instruction
corresponds to our level of knowledge at the time of publication. We recommend you to
visit our website .ru-cycles.com/manuals for any modifications. Here you can also
download the updated manual in PDF format.
In the following text, your The Ruan is called “Pedelec“
1.1. INTENDED USE
Your Pedelec is intended for the transport of one person on asphalt roads and
rideable forest and land routes. The additional allowable load
(bike + driver + accessory + baggage) amounts to 120 kg.
The Pedelec is not intended for:
• Racing/competition
• Cleaning with a water jet
• Transport in the rain by a car without covering the engine and
dismantling the baery and display
• Charging the Pedelec outdoors in a wet environment

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The frame number is found on the plate on
the lower tube directly below the engine. The
type plate is located on the boom of the tank.
Please note down the serial number of the Pedelec here:
1.2. VEHICLE OVERVIEW
1. Stepless Hub
2. Belt Drive
3. Frame Number
4. Engine
5. Baery
6. Type Plate
7. Fork
8. Display
9. Control Unit
YOUR VEHICLEYOUR VEHICLE
Intended use is also limited by:
• The safety instructions in this User Manual
• The “Technical Data“ chapter in this User Manual
• Your local regulations for street transport
The following user groups should not use the Pedelec:
• Persons with a limited physical, sensory or mental capacity
• Persons who due to their body size, cannot safely ride the bicycle
Any changes to your Pedelec increasing the engine output or maximum support
speed, could endanger your driving safety and convert the vehicle from a Pedelec
into a small motorcycle. You could be exposed to sanctions in accordance with traf-
fic, licence and safety regulation with penal consequences!
A Pedelec always accelerates faster than a bicycle. Be aware that other trac parti-
cipants cannot always predict your acceleration performance.
→ First, get acquainted to your new Pedelec on a trac free location, before riding in
the busy streets.
→ Exercise the brakes. Please also see chapter 4.3. “Brake System“.
Rotating parts such as wheels, chain ring, sprocket, pedal crank or pedals may draw
in clothing, carried objects and even body parts, e.g. your shawl or a bag aached
to the handlebar may get caught into the spokes during driving. When your feet slip
from the pedals, they can get caught in the spokes. This may lead to severe acci-
dents!
→ Always wear tight-fiing clothes.
→ Wear shoes with non-slip, flat soles.
→ Do not aach objects onto the handlebar, as they may swing into the front wheel.
Check if required active and passive illumination devices have been installed ac-
cording to the safety regulations applicable in your country. Required illumination
devices can be purchased on our ocal website. The technical design safety
must be checked regularly and eventually be repaired by a specialist.

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• Charging device
• Board computer
• Anti-the safety screw on the board computer at the mounting support
• 2 keys for securing the baery to the Pedelec
• 2 transport fixations for the hydraulic dics brake
• Delivery package (please store if you consider to cancel the purchase within
two weeks)
• User manuals of dierent component manufacturers
1.3. DELIVERY SCOPE
1.4. ASSEMBLY OF ACCESSORIES
2.1. HANDLEBAR ALIGNMENT
When installing accessories like a child seat or trailer, please check the compati-
bility with the Pedelec through the accessory manufacturer or a bicycle dealer.
This chapter explains how to prepare your Pedelec for the ride.
Inflate the tires first. The air pressure volume is described in chapter 3.1.
2. COMMISSIONING
Your Pedelec is supplied as a part assembly and as a full assembly. In the laer case, you
can skip items 2.1. and 2.2.
If it is not a standard delivery, please read the following items for “Handlebar Alignment“
and “Pedal Assembly“.
The stem is a significant safety component. When tightening the bolts, ensure that
you use the torque as defined in the torque table under 9.3. Otherwise, there is a
hazard of accident!
• Li the vehicle by the front frame, so that it no longer touches the ground.
Turn the fork lewards and rightwards. The front wheel must follow the
movement. This simulated steering operation should not be dicult
• If the steering is not rotated easily, the ahead bolt is tightened too fast (3).
Loosen it by releasing the 3 clamps on the top fork bridge(2). Now you can
adjust the compression of the steering bearing with the ahead bolt. Read-
just the bolts of the fork bridge with a torque of 67 Nm
• Finally, clamp the handlebar in the middle
by tightening the bolts (1) at the cross on
the stem. Ensure a uniform front and rear
gap between stem and cover
• Apply a thin layer of grease onto the
thread of the pedal axis and the crank.
Next, screw the pedal into place by hand
loosely. Consider the correct assembly
angles in order to avoid tilting
• Place the crank in a horizontal position,
the right pedal oriented towards the front
wheel.
• Tighten the pedal with an SW 8 Allen key at 3035 Nm.
2.2. PEDAL ASSEMBLY
Pedals are important safety components. Make sure that you tighten the pedal axis
firmly, according to the manual. Otherwise, there is a hazard of accident!
COMMISSIONINGYOUR VEHICLE
The right pedal has a right thread, the le pedal has a le thread on the pedal axis. The
right pedal is mounted clockwise and the le pedal is mounted counter-clockwise. The
pedals are marked with “R“ and “L“.

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Removing the baery:
• Loosen the lower cover of the tank with a
SW3 Allen key and remove it
• Before removing the baery, ensure that
the system is disconnected. Turn the key
in the lock by 1/4 rotation while tilting the
baery from the upper bracket
• Pull the baery from the bracket
Inserting the baery:
• Insert the baery with its contacts on the
lower bracket and, while sliding it in, tilt
it up to the upper bracket, until the lock
snaps in audibly
• Remount the cover on the tank
2.3. SETTING THE SADDLE DISTANCE 2.4. REMOVAL/INSTALLATION OF THE BATTERY
The correct saddle distance is achieved when you
can place your ball of the foot on the pedal with
your leg in extended position. The crank must be
aligned at an angle of approx. 45°.
To check the saddle distance, lean against a wall
while seated on the Pedelec, or have another
person hold the Pedelec.
The saddle distance is changed as follows:
• With a 13 open-end spanner, loosen both
saddle support clamping bolts to such a
width allowing the adjustment of the saddle
• Re-tighten the bolt with the open-end
wrench (value according to torque table in
chapter 9.3.).
COMMISSIONINGCOMMISSIONING
Please note that the saddle clamp has to be within the hatched area. Moving it too
far back could result in damage of the seat post.
Do not pull the saddle support from the seat
tube if you want to change the saddle height.
The front part must lie flush with the upper
tube. If you pull out the saddle support, both
the support or the upper end of the seat tube
may break. A hazard of accident or injury
exists!
The saddle support clamping nut is tightened correctly when the saddle cannot be rotated
or slipped sideways under your body weight.
2.5. SWITCHING ON/OFF THE DRIVE
• Slide the supplied board computer onto the
handlebar support
• Press the ON/OFF switch on the board com-
puter shortly

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BEFORE EACH RIDECOMMISSIONING
2.6. ADJUSTING SUPPORT LEVEL
2.7. SWITCHING ON/OFF THE LAMP
2.8. INITIAL ENGAGEMENT OF BRAKE DISCS
Your brake system is delivered with a weak break function, because the surfaces
of the brake discs and pads have not been engaged yet. With a new Pedelec,
and also when changing the brake discs and pads, you should engage the brake
discs as follows:
• Accelerate the Pedelec to approx. 15.53 mph (25 km/h)
• Brake the Pedelec by both brakes until standstill
(avoid to block the wheels!)
• Repeat this procedure as oen as required in order to achieve an optimal
brake performance
For the adjustment of the support level, press the
“+“ buon on the control unit until the required
support level is shown on the display. To lower it,
press the “–“ buon.
By pressing the light buon, the LED headlamp
and rear light are switched on and o.
If you put too much force on the front wheel brake, a hazard of tipping over exists.
Your rear wheel might li and have you fall over the handlebar.
→ Pull a lile less at the le brake lever, or fully release the brake lever, when you
notice that the rear wheel is lied.
3. BEFORE EACH RIDE
3.1. CHECKING THE TIRES
3.2. CHECKING THE BRAKE SYSTEM
• Before each ride, check your brakes at standstill. For this purpose, pull the
brake lever towards the handlebar with two fingers for a normal braking
force. The brake lever must not touch the handlebar grip
• Move the Pedelec while pulling the front and rear brakes. A play too strong
is not allowed. If you notice any play, identify the cause. The brake calliper
or brake disc may not be tightened firmly. Tighten according to the torques
in the torque table in chapter 9.3
Air pressure: The allowed pressure range of the Ruer 26” ETRTO 76559 is
between 1 and 2 bar.
The following applies: The higher your weight, the higher the air pressure to be
used. If you are not a light-weight person, set the pressure of your rear tire at 2
bar.
We recommend to check the pressure every 2 to 4 weeks, since there is an
inevitable constant pressure loss of the inner tubes.
With a tire pressure too low, a puncturing hazard exists (snakebites). This will result
in a flat tire.
A tire that is damaged by tears or punctured by a sharp object may loose its pres-
sure. A hazard of accident exists!
→ Check that your tires are without tears or any foreign objects.

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BEFORE EACH RIDEBEFORE EACH RIDE
• If hydraulic brake discs are used, the pressure point must be stable at the
brake lever. If the pressure point is not reached aer 2/3 travel of the lever,
pull the lever several times in a row (“pumping“). Check whether the pres-
sure point has stiened. If so, or when the pressure point changes during
the ride, have the brake system bled by a specialist workplace
• The brake discs must be oil-free. Any oil on the brake discs is best removed
with alcohol. Do not use a conventional brake disc cleaning solution!
The pressure point is the lever position at which the brake is engaged. If brakes function
smoothly — there are no air bubbles in the hydraulic line — the pressure point is situated at
the same lever position at each braking action.
Do not touch the brake discs with your hands. The thin grease film on your skin is transmit-
ted to the brake discs and aects their functions.
3.3. CHECKING THE DRIVE BELT
3.4. BATTERY: CHECKING THE FIXATION AND CHARG-
ING STATUS
3.5. CHECKING THE FORK
The drive belt is a product subject to wear. Please check the following items
regularly:
Check whether the baery is secured in the lock and see whether the charging
status is sucient for your planned ride.
Before each ride, check the fork for:
• Breakage and deformations
• Secure fixation of the protective plate
• Firm screwing connection of the fork bridge
• Are there any foreign objects (twigs) in the drive belt?
→ If so: Remove them
• Is the drive belt very dirty?
→ If so: Rinse it with water or a proper cleaning solution
3.6. CHECKING THE SCREW CONNECTIONS
3.7. CHECKING THE LIGHTS
Before each ride, check the screw connections for
Before each ride, check the function of the lights. Ensure that the headlamp is
directed according to the lighting range defined by your local regulations. See
chapter 6.9.
Li the vehicle up slightly and let it fall onto the ground on its tires. Check whet-
her you see or hear any loose parts. Identify the cause of any loose parts and
check if their torque is correct. If required, consult a specialist dealer.
Also check that the following parts do not rotate
• Quick release of the front wheel
• Screw axis of the rear wheel
• Saddle
• Saddle support
• Handlebar
• Stem

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OPERATING THE BIKEOPERATING THE BIKE
4.1. GEAR HUB
The gear system allows the stepless adjustment of the transmission via a
twist grip.
• For starting or riding up a hill, change to a
low gear ratio: Turn the controller twist grip
to the “Mountain“ display direction (A)
• For higher speeds, change to a higher gear
ratio: Turn the controller twist grip to the
“Level“ display direction (B)
Changing gear during the ride
“Changing Gear“ at standstill
Optimized hub gears do not allow the whole transmission range for changing gear during
standstill.
Normally, 5070% of the transmission gear range is allowed during standstill. The remai-
ning range can be set during the ride.
4. OPERATING THE BIKE 4.2. DRIVE UNIT
4.2.1. BELT DRIVE UNIT
At delivery, the belt is tensioned optimally and is not to be re-tensioned, neither
aer the prolonged use of the drive. When mounted correctly, a high load can be
placed on the belt in pulling direction. The carbon fibers embedded in the belt
are very flexible, but react very sensitively to:
KNICKING
TURNING UPSIDE
DOWN
TWISTING
BINDING TOGETHER
PULLING UP BY THE
SPROCKET WHEEL
BENDING BACKWARDS
USE AS A STRAP
WRENCH
PULLING UP BY THE LEVER

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ERGONOMIC SETTINGOPERATING THE BIKE
4.3. BRAKE SYSTEM
4.4. SIDE STAND
Your Pedelec is equipped with hydraulic brake discs for a fast and safe stopping
action. Use both brakes simultaneously for an optimal and safe braking. The le
brake lever has an eect on the front wheel brake, the right brake lever has an
eect on the rear wheel brake.
The brake system is provided with a fully automated lining compensation. This
osets the wear of the brake pads, while the brake pressure point remains equal.
The optimal saddle position must be obtained
according to leg length.
See chapter 2.3.
For seing the saddle position and inclination,
loosen the two nuts on the saddle clamp, which
are located under the saddle.
Now move the saddle in the clamp guide and
adjust the inclination.
Adjust the inclination of the saddle in horizontal
direction or slightly incline the saddle tip downwards.
Tighten the nuts according to the value in the
torque table in chapter 9.3.
You can adjust the brake lever position on the handlebar, along with the brake
lever angle and lever width.
When manipulating your side stand, observe the following:
The front wheel brake has a stronger delay eect than the rear wheel brake. Exercise the
purposeful use of the front wheel brake, so that you become familiar with its force.
If you put too much force on the front wheel brake, a hazard of tipping over exists.
Your rear wheel might li and have you fall over the handlebar.
→ Pull a lile less at the le brake lever, or fully release the brake lever, when you
notice that the rear wheel is lied.
Riding with unfolded side stand may lead to falling. Moving the Pedelec backwards
with an unfolded side stand may lead to the clamping of the stand onto the crank.
→ Fold in the stand before starting the ride.
Aer braking, especially aer long rides down the hill, the brake discs, brake calliper,
quick release and axis nuts can become very hot.
→ Do not touch the brake discs aer intense braking action. You could burn yourself.
If you sit on the Pedelec while the side stand is folded out, it may fail.
→ Do not sit on the vehicle if the side stand is folded out.
5. ERGONOMIC SETTING
5.1. SETTING SADDLE POSITION AND INCLINATION
5.2. BRAKE LEVER
5.2.1. ADJUSTING BRAKE LEVER POSITION
For a firm grip onto the handlebars when braking, it is best to take the brake lever
by your index and middle finger.
To achieve this position, moving the lever sidewards, so that both fingers can
grip the brake lever as shown in the picture, might be necessary.
You can move the brake grip on the handlebar
by loosening the hexagon socket screw on the
handlebar clip. If required, first use an appropria-
te Allen wrench for the loosening and shiing of
the operating unit or gear unit.
Once you have found the correct position,
tighten the grips just as much as to allow their
rotation.
In the next step, adjust the brake grip angle.

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MAINTENANCEERGONOMIC SETTING
5.2.2. BRAKE GRIP ANGLE
Adjust the brake grip angle so that with ex-
tended arm, you fingers rest on the brake le-
vers when seated on the Pedelec. Your wrist
should be stretched out as much as possible.
Aer adjusting the angle, re-tighten the lever
5.2.3. ADJUSTING BRAKE LEVER DISTANCE
The brake lever distance seing should
allow to operate the brake lever by the first
phalanxes of both fingers positioned on the
lever. The lever width is adjusted with a Torx
wrench (size dependent on producer). For
this purpose, adjust the screw at the marked
position 1.
For a fully operational and save Pedelec, regular maintenance must be perfor-
med. Before maintenance, please observe the following instructions.
The following parts of your Pedelec are subject to wear according to their use.
This wear is not covered by the warranty.
• Baery
• Tires and tubes
• Brake pads, brake discs
• Drive belt and sprocket
• Rubber gaskets and rings
• All moving parts (e.g. bearing/pedals)
• Shi cables, shi cable housing
• Lubricant
• Handlebar grips
• Painting and all surfaces
6. MAINTENANCE
Maintenance requires technical skills. You are responsible for the correct mainte-
nance of your Pedelec.
→ If you do not know how to perform this task, take your bike to a specialist for main-
tenance.
During maintenance works a trapping and crushing risk exists. You fingers can get
caught by moving parts.
→ Be careful with your hands and when you work.
A hazard of injury exists when the drive system is
switched on during maintenance works! You hands
may get caught between the chain and chain ring
during running operation.
→ Remove the baery before performing mainte-
nance works. This ensures that the drive system is
out of function.
6.1. WEAR PARTS LIST

24 25
MAINTENANCEMAINTENANCE
Details on wear of some parts are found in the following chapters. Most parts
suer wear due to friction.
Maintenance of your Pedelec is required according to its use and it
cannot be precisely indicated. Take your bike to a specialist dealer for
inspection and maintenance at least once a year.
In principle, we propose the following maintenance intervals:
The baery has a guaranteed service life of two years (warranty term) and 500
charging cycles, with a remaining capacity of 60% aer this period. A charging
cycle means a complete charge of the baery with one single charge or several
partial charges (e.g. two half charges).
A baery is a wear part, as it ages over time or its wear rate is accelerated by its
use. The baery life depends on the following factors:
Stress
Baery life is reduced by a high demand on the engine output (strong stepping
up, high supporting levels).
Environmental temperature at storage
Baery life is reduced when the bike is stored at temperatures exceeding 30 °C
or in the direct sunlight. Storage at temperatures between 0 and 20 °C increases
the baery life.
Charging status during storage
The highest baery life is achieved when the baery is stored with a charging
status of approx. 60%. But storage of the baery with a full or empty status will
reduce the baery life.
If you do not use your Pedelec for a prolonged period (> 1 month), make sure that
the baery is charged by approx. 60%, which corresponds to 3 LEDs on the
display. Check the charging status aer 3 months. If only one LED is lit on the
charging status display, re-charge the baery up to approx. 60%.
Once aer first 62186 miles (100300 km)
• Check tightening torques of brake levers, saddle, saddle support, stem,
handlebar
• Check spoke tension, re-center if required
• Or readjust NuVinci shi cables
Every 310 miles (500 km)
• Check bearing clearance of steering
• Check bearing clearance of hubs
• Check bearing clearance of pedals
• Check tight-fiing crank seat
• Check wheel concentricity and spoke tension
• Check headlamp inclination
• Check brake pad wear condition (first time aer 621 miles or 1,000 km)
Every 1242 miles (2,000 km) or once a year
• Check brake disc wear condition
• Check tightening torques of brake levers, saddle, saddle support, stem,
handlebar
• Check chain wear condition and exchange it, if required
• Chain ring and sprocket wear condition
6.2. RECOMMENDED MAINTENANCE INTERVALS
6.3. AFTER AN ACCIDENT
6.4. BATTERY
If due to an accident, parts of the drive system are visibly damaged (cable, engine,
baery), a hazard of electric shock exists.
→ Immediately remove the baery in such a case. Have the drive system checked by
a qualified dealer.
Any damages caused to the carrying parts of your Pedelec due to an accident may
lead to a breakage hazard.
→ Aer an accident, contact your specialist dealer to check all damaged parts
such as frame, fork, handlebar, stem, saddle support, pedal crank and pedals, and
exchange any parts if required.

26 27
MAINTENANCEMAINTENANCE
Inevitably, tires are subject to wear due to friction. Wear of the side edges of the
tire can be reduced, by using a sucient amount of air pressure (see chapter 3.1)
and by giving up blocking the wheels during braking. You should change your
tires when the rubber wheel tread is used up so much that the mesh below be-
comes visible, or when the tires have become porous due to ageing and frequent
sun radiation. The following chapters describe the procedure for changing the
tires.
• Using a 6 mm Allen wrench, loosen the axle
and pull it out of the fork
• Slide the transport lock between the brake
pads
6.5. TIRES
6.6. CHANGING TIRES/TUBES
The wheels are easily dismounted by hanging the Pedelec in a maintenance support or
placing it upside down on the saddle and handlebar.
Before positioning the bike on the saddle and handlebar, remove the display and rotate
the bell and remote control.
When the wheel is dismounted, do not activate the hydraulic brake discs. Otherwise,
the calliper pistons may approach each other and touch.
→ Once you have dismounted the wheel, slide some colored transportation locks
between the brake pads.
6.6.1. DISMOUNTING THE FRONT WHEEL
6.6.2. DISMOUNTING THE REAR WHEEL
• Change gear to a position allowing the
easy access to the cable pull end on the
gear hub interface
• Remove the cable pull ends provided
with a snapper or catch from the gear
hub interface following figures 1, 2 and 3
• Loosen and/or remove the axle nut at
both sides according to figure 4
• Remove the chain from the chain ten-
sioner (see figure 5) or for a belt drive,
remove the belt from the front pulley
• For chain drive systems, open the chain
at the chain lock by pressing lightly
against the pulling direction (see figure
6)
• You can now remove the chain and take
out the rear wheel by moving and turn-
ing it backwards

28 29
With too low initial tension of the quick release, the wheel can come o during the
ride. A hazard of accident exists!
→ Always tighten the quick release with 1012 Nm.
MAINTENANCEMAINTENANCE
6.6.3. CHANGING TIRES/TUBES
• Unscrew the valve cap from the valve.
• Release the air completely by pressing
the valve pin halfway into the valve
• Remove the tire at one side of the wheel
rim with the aid of a tire lever. If required,
use a rinsing agent and water for an easy
liing of the tire
• Pull o the tire and tube and perform the
required changes
• Inflate the inner tube only moderately (diameter approx. 0.78 in or 2 cm) and
relocate it in the tire
• Insert the valve into the valve opening of the rim and pull both tire and tube
onto the rim from one side
• Observe the direction as indicated by the manufacturer, if available
• Next, li the other side of the tire onto the rim with the tire lever
• Inflate the tire to maximum pressure as indicated on the rim, in order to ins-
tall the tire evenly on the rim. It is normal when you hear a “plop” sound
• Reduce the pressure according to the required value (see chapter 3.1.)
• Screw the valve cap onto the valve
6.6.4. INSTALLING THE FRONT WHEEL
• Remove the transportation lock between
the brake pads
• Thread the front wheel into the fork care-
fully. Make sure that the brake disc does
not to skid into the brake pads
• Insert the quick release axle into the fork
and hub and tighten the nut some turns,
while you hold the quick release handle
• Flip up the quick release lever, in parallel position to the fork leg. The clam-
ping force should increase during the locking. If this is not the case, re-open
the quick release and re-tighten the nut
6.6.5. INSTALLING THE REAR WHEEL
• Remove the transportation lock between
the brake pads
• Mount the rear wheel into the rear drop-
out on the frame and li the chain (or
drive belt) on the sprocket (or the front
belt pulley) again
• Make sure not to clamp the cable pulls
• Place a tab washer at each end of the
hub axle (note the le and right markings). The washer ribs must point at the
direction of the dropout in the frame. The square hub must engage with the
dropout of the frame
• Pull the rear wheel backwards against the drive direction, screw the axle
nuts onto both sides and tighten with a torque of 40 to 45 Nm
• For a chain drive: reposition the chain on the chain tensioner making sure
that the sprocket flanges are positioned in between the chain links
• For a drive belt: make sure that the drive belt is neatly positioned in the
sprocket guide showing the correct tension
• Mount the cable pull ends provided with the catch-snapper back into the
gear hub interface according to item 6.6.2 but inversely
Check the alignment of the markings as described in item 6.7.

30 31
MAINTENANCEMAINTENANCE
All explanations with regards to “shiing“ are illustrated with the CB Controller.
This is also valid for the C3 and the CBs Controller.
Since this is a hydraulic brake system, maintenance options are limited. Consult
a specialist workplace for repair works on the hydraulics. Always contact the
specialist when the brake pressure point oscillates.
Seing the headlight range is prerequisite for your own and all surrounding traf-
fic participants’ security.
We recommend to set the headlamp in such
a way that, measured at 16.4  (5 m) from the
lamp, the center of the light cone should be at
half the height of the light source.
The inclination of the headlamp is set by relea-
sing the screw connection on the lamp holder
with an appropriate open-end wrench and
repositioning it according to a new inclination.
Then tighten the nut only to such extent you
can still manually correct the lamp’s inclination
with a greater force.
• The play of the shier cable can be set
with the setscrews (1) on the twist grip
housing
• You can determine the play of the shier
cable by slightly pulling the outer cable
sleeves in the area of the setscrews (2):
An optimum play is 0.5 mm.
On the other hand, a shier cable play
exceeding 0.078 inches (2 mm) may
have a negative impact on the shiing
quality and reduce the service life of the
cable pull
• A larger play of the shiing cable might
be useful for the mounting and dismoun-
ting of the rear wheel, as this facilitates
the removal of the shi cable ends from
the gear hub interface
6.7. SETTING THE SHIFTER CABLE PLAY
6.8. BRAKES
6.9. SETTING THE HEADLIGHT RANGE
1
0.5-1.5mm
2
6.8.1. WEAR OF BRAKE PADS AND DISCS
Brake pads and brake discs are subject to wear, which is caused by the friction
between parts. Wear depends on driving style, terrain, weather and surface con-
ditions, and wear of the brake pads cannot be predicted.
Since brake discs are made of a material with a higher resistance, they must
6.8.2. CHECKING THE BRAKE PADS
Brake pads must be changed when they
• Have a width of only 0.098 inches (2.5 mm) (height of friction lining incl.
carrier plate)
• Are in contact with oil (leads to a lower braking performance)
First check the brake pad width visually. If you
suspect that the minimum width is exceeded,
the pads must be dismounted and inspected
with a calliper. Please consult a specialist
workplace for this inspection.
be exchanged only aer exchanging approx. 4 to 5 brake pad pairs. A regular
inspection of the brake pads every 310.6 miles (500 km) is recommended.

32 33
TRANSPORT ON/BY CARCLEANING AND MAINTENANCE
7. CLEANING AND MAINTENANCE 8. TRANSPORT ON/BY CAR
• If required, clean the Pedelec with water (but not a water jet!) using a so
cloth or so brush
• You can also clean the chain with water or a non-abrasive cleaning agent.
Then, lubricate it
• With a humid cloth, wipe o the contacts on the baery and the bae-
ry holder on the frame. Wait until the contacts are dry before refixing the
baery
• To prevent corrosion, treat the screws on the Pedelec with a corrosive pro-
tective film, e.g. with a spray wax
To avoid damages to the Pedelec during transport outdoors or on a car, pay at-
tention to the following notes:
A water jet, e.g. from a garden hose, may lead to damages on the bearings, gear hub,
baery, engine and display.
The manufacturer does not accept any liability for damages.
During the transport of the Pedelec, the baery can become loose and pose a risk for
other trac due to the contained energized power.
→ Dismantle the baery as well as any loose accessories from your Pedelec, before
you transport it on a rear carrier or roof rack.
Leakage of spray vax or oil onto the brake discs or brake pads will decrease the
braking function.
→ Make sure that spray wax or oil does not leak onto brake discs or brake pads!
If you transport the Pedelec during rain or at high speeds by or on the car, water may
penetrate into the hub, the engine, the baery as well as into the display.
→ Remove the baery and display.
→ Use a protective cover for the Pedelec, hub and engine.
The weight of the Pedelec places high demands on a car rear carrier or roof rack.
Inappropriate bicycle carriers may break during the ride or they may not fasten your
Pedelec tightly!
→ Check the allowed roof load in the car manual and the support load as indicated in
the manual for car bicycle carriers.
Li-ion baeries are subject to the requirements of the hazardous materials legislation.
Private users may transport the baery in the streets without any limitations.
For commercial transport or transport by third parties (e.g. forwarding agent), national re-
gulations on packaging and identification must be met. If required, consult your specialist
in hazardous materials for the correct preparation of the package.

34 35
9. TECHNICAL DATA
9.1. COMPONENT LIST
9.2. WEIGHTS
9.3. TORQUE OF SCREWS
Chassis
Frame Ruan Unisex
Fork Double Down Crown Fork
Drive
System
Engine Bosch Performance Line CX
Baery Bosch Frame Baery 500 Wh
Display Bosch Intuvia
Drive and
Brakes
Gear Enviolo
Crank 152 mm
Chain Ring Belt Ring 38T
Chain/Belt Gates Carbon Drive
Rear Sprocket 22T
Front Brakes Hydraulic Disc Brakes, 180 mm
Rear Brakes Hydraulic Disc Brakes, 180 mm
Wheels
Rear Hub Enviolo Hub
Rims Ru Cycles Rim 55965
Spokes Sapim Bued (2 - 2,34 mm) Black
Tires 26“ 76559 ETRTO
Human
Interface
Stem Direct Mount 22,2 mm
Handlebar Ru Z-Bar High 22,2 mm
Safety
Headlamp Front Light LED
Rear Light Rear Light LED
Part Torque/Nm
Bosch Remote on Handlebar 1
Bosch Display Mount 1
Fork Bridge Screws 56
Stem on Fork Bridge 56
Stem Cover 56
Ahead Screw 13
Saddle Support Clamp 56
Saddle Clamp of the Saddle 40
Brake Adapter on Fork or Frame 6
Brake Saddle on Adapter or Frame 6
Brake Discs (Centerlock) 6
Brake Grip (Clamping on Handlebar) max. 4
Lockring Chain Ring 2025
Crank on Bosch Axle 4555
Axle Screws Rear Wheel Hub 3045
Pedals 3035
Baery Weight 2,5 kg
Tare Weight incl. Baery 33 kg
Admissible Total Weight (Bike + Driver + Equipment + Packing Bag) 120 kg
TECHNICAL DATATECHNICAL DATA

36 37
EC DECLARATION OF CONFORMITYLIABILITY FOR MATERIAL DEFECTS
10. LIABILITY FOR MATERIAL DEFECTS 11. EC DECLARATION OF CONFORMITY
A statutory liability for material defects is applicable for a period of 24 months as
from the day of purchase.
The prerequisite for the assertion of material defects liability shall be the submis-
sion of the original invoice and proven inspections.
The assertion of material defects is subject to the following prerequisites:
The warranty shall not include:
• The presence of a manufacturing, material or information fault
• The claimed damage was already existent at the time of the transfer
• The product was not altered due to wear or ageing
• The damages were not originated by any use other than the intended use
• Baery: The baery has a remaining nominal capacity of less than 60%
aer a maximum of 500 charge cycles
• Any wear parts as stated in the wear parts list, provided they are not pro-
duction or material defects
• Damages caused by the non-intended use
• Damages caused by the non-compliance of the procedures described in
the “Maintenance“ chapter
• Damages caused by the neglecul use of repair tools and lacking mainte-
nance
• Damages caused by the use of used parts
• Damages caused by the additional mounting of standard features or due to
technical retrofiing

38 39
12. DISPOSAL
This symbol on your Pedelec indicates that this product
must not be discarded with household waste, under the
terms of the national laws.
Disposal of the Pedelec at the end of its service life should only be done through
a public collection point. Packaging materials shall be collected separately and
directly disposed of according to local collection schemes. Take the used baery
to an E-bike dealer or send it for disposal in the hazardous waste packaging to
RUFF CYCLES GmbH.
RUFF CYCLES GmbH
- Disposal -
Im Gewerbepark B69
93059 Regensburg
Germany
DISPOSAL