a2b Octave User manual

1Owner´s manual Octave

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Contents
1.0 Introduction
2.0 Important information
3.0 Your A2B
4.0 Unpacking
5.0 Understanding your A2B
6.0 Battery use, storage and disposal
7.0 Important pre-ride safety information
8.0 Maintenance
9.0 Cleaning your A2B
10.0 Troubleshooting
11.0 Technical information
12.0 Warranty and safety information
13.0 Disposal
14.0 Maintenance schedule
15.0 Owner registration
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Owner`s manual
1.0 Introduction
Welcome and congratulations on buying your new A2B Octave*, the electric bike that’s taking transport in a whole new direction. It’s the
new revolutionary way to get to work, pop to the shops or just get some fresh air. Compared to jumping in the car, an ebike is a lot more
fun, easier to park and will reduce your fuel costs as well as your impact on the environment... as you’ll soon find out!
Hero Eco
www.wearea2b.com
*A2B Octave is termed as ‘A2B’ throughout the rest of this manual.
A2B Global Head Office
Hero Eco Ltd
80 Coleman Street
London EC2R 5BJ
Germany
Hero Eco Ltd
Reichenberger Strasse 124
10999 Berlin
USA
Hero Eco Inc.
207 9th St.
San Francisco, CA 94103

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2.0 Important information
This owner manual contains important safety, performance and service information. Please ensure you read this thoroughly
before your first ride.
Your A2B should be fully assembled and the battery charged by your A2B dealer at the time of delivery. If not contact us immediately as
this will void your warranty.
Please ensure that all users of your A2B read and understand the following important information.
• The A2B is designed for public road use. Don’t ride off-road,
in water and don’t use the A2B to jump in bumby terrain or for
competition events.
• We recommend that you always wear an approved cycle helmet
at all times and light or fluorescent clothing at night when riding
the A2B.
• Make sure you know and practice the rules of safe and
responsible riding. There is always a risk of serious / fatal injury or
damage as a result of an accident while riding an A2B. By
choosing to ride the A2B you assume responsibility for that risk.
• Your existing insurance policies may not provide accident cover
for your A2B. Contact your insurance company or agent for
information.
• This owner’s manual makes no representation about the safe use
of the A2B under all conditions.
This indicates a potentially hazardous situation, which if not avoided, may result in serious injury, property or equipment
damage or inadvertent system failure.
Refers to useful or other important relevant information.
If you have questions or do not completely understand any of the instructions in this owner's manual, please ask your A2B specialist dealer.
Important symbols

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Owner`s manual
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3.0 Your A2B
3.1 Components

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1. Seat (Saddle)
2. Seat post
3. Seat post clamp
4. Down tube battery (applicable to
internal battery bikes only)
5. Rear view mirror (standard outside
Europe, additional option in Europe)
6. Key switch
7. Display
8. Head light
9. Front mud guard
10. Front wheel/tyre
11. Front fork
12. Quick release
13. Front disk brake and rotor
14. Crank arm and chain ring
15. Controller
16. Chain tensioner
17. Kickstand
18. Drive chain
19. Rear wheel/tyre
20. 7-speed derailleur and freewheel
21. Hub motor
22. License plate holder
23. Tail light
24. Rear mud guard
25. On/ Off switch for external battery
26. Rack battery (Standard in Europe,
option outside Europe)
27. Rear rack
28. Battery connector
29. Swing arm
30. Rear shock absorber
31. Rear shock aborber rebound adjuster
When we refer to the 'right side' and
the 'left side' of the A2B 'left' and 'right'
are relative to your position when sitting
on the A2B in the normal riding position.

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Owner`s manual
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32. Left brake lever
33. Right brake lever
34. Throttle grip
35. Right pedal
36. Left pedal
37. Gear Shifter

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4.0 Unpacking
NOTE: Your A2B weighs 37.2 kg (82 lb).
LIFT WITH CARE. Two people are recommended.
4.1 Tools and equipment
• Pliers
• Side cutters (for cutting cable ties used to pack the A2B)
• Blanket or tarpaulin (to avoid scratching unprotected surfaces on
the A2B whilst unpacking)
4.2 Delivered fully assembled and battery charged
Your A2B should be fully assembled and the battery charged
by your A2B dealer at the time of delivery. If not contact us
immediately as this will void your warranty. However, if you need to
unpack your A2B, follow these instructions:
1. Carefully open the flaps at the top of the carton. Remove all
staples (with pliers if necessary), to avoid the possibility of
scratching yourself or your A2B.
2. Carefully lift the A2B out of the carton. Two people are
recommended.
3. Lay the A2B on a tarpaulin or blanket to avoid scratching any
unprotected surface whilst you remove the packing materials.
4. Remove the accessory boxes from the carton.
5. Using the side cutters, clip the cable ties that hold various
components to the frame. ONLY clip those cable ties that are
used to attach components to the frame or prevent movement
during shipment (and NOT those trimmed of excess length).
The A2B has cable ties that manage electrical and control
cable routing (and ARE trimmed of excess length). DO NOT clip
these cable ties as they are necessary for the safe operation of the
vehicle.
6. Remove all of the protective wrapping from the A2B and dispose
of the packaging responsibly. The battery and charger should be
tested when received. If the battery or charger is damaged in any
way, a claim should be filed with the carrier. A full report of the
damage should be obtained by the claim agent, and this report
should be forwarded to Hero Eco. Hero Eco will advise the
action required and arrange for repair or replacement.
Charge the battery for at least 12 hours before using the A2B
for the first time. See section 6.2 & 6.3.

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Owner`s manual
4.3 Installing the handlebar and display
1. Using a 4 mm allen key, unscrew the three bolts that hold the
handlebar clamp to the handlebar stem (a). Remove the cap
from the handlebar stem.
2. Install the steering stopper. Ensure that the stopper will not
touch the steering tube. Tighten the bolts to 6 Nm (b).
3. Nest the handlebar into the handlebar stem, ensuring that it is
centred and properly oriented. Replace the cap, reinstall the
bolts holding the cap to the stem and tighten the bolds securely
to 6 Nm per bolt (c).
It is essential to tighten all three bolts evenly to ensure proper
installation.
The bolt located on the top of the stem should be tightened
to no more than 1 Nm. The left side bolt on the bar stem must be
tightened to 10-12 Nm.
4. Install the display and tighten the bolts to 6 Nm per bolt (d).
5. Install the key lock and tighten the bolt to 3 Nm (e).
The 'Nm' measurements refer to the torque value that should be
applied to the tightening of bolts, please use an appropriate
spanner to apply the correct torque values as specified.
a
b
c
d
e

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4.4 Installing the pedals
1. Lightly coat the threads of the pedal axle with light grease. This
will make screwing the pedal into the crank arm easier and will
help prevent corrosion in the future.
2. Two pedals (a left pedal and a right pedal) are supplied. Each
pedal is DIFFERENT. There is an 'R' stamped on the spindle of
the right-hand pedal, and there is an 'L' stamped on the spindle
of the left-hand pedal.
3. Install the right-hand pedal on the right-hand side, and the left
pedal on the left-hand side. It is very important that each pedal is
installed on the correct side.
Attempting to screw the left-hand pedal in to the right-hand
crank arm (or vice versa) will damage the internal threads of the
crank arm. This damage is not ‘fixable’ and the crank arm will have
to be replaced and is not covered by the manufacturers warranty.
4. When installing the right-hand pedal, screw the threaded
section of the pedal spindle into the crank arm turning the
spindle in a CLOCKWISE direction.
5. When installing the left-hand pedal, screw the threaded
section of the pedal spindle into the crank arm turning the
spindle in a ANTI-CLOCKWISE direction.
6. Screw each pedal as far as you can into the crank arm with
your fingers.
7. Using a 15 mm open end spanner, securely tighten the pedals.
8. Ensure the pedals are installed with a torque value of 30 Nm.
An improperly installed pedal may fall off your A2B whilst
in use. This may cause an accident resulting in serious injury or
death and property damage. Ensure that your pedals are properly
installed and tight before each ride.

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Owner`s manual
4.5 Changing components or adding accessories
Before installing any component or accessory, including a different
tyre, make sure that it is compatible with your A2B by checking with
your A2B dealer.
Read, understand and follow the instructions that accompany the
component or accessory you purchase for your A2B. Follow the
component manufacturer’s instructions if they conflict with these
instructions.
As with all mechanical components, the bicycle is subjected to
wear and high stresses. Different materials and components may
react in different ways to wear or stress fatigue. If the design life
of a component has been exceeded, it may suddenly fail possibly
causing serious or fatal injuries to the rider. Any form of crack,
scratches or change of colouring in highly stressed areas, such as
frame, fork and handle bar, indicates that the life of the component
has been reached and it should be replaced immediately by an A2B
dealer.
Failure to confirm with compatibility, proper installation,
operation and maintenance components or accessories can result
in serious or fatal injury.
Using non-genuine components or replacement parts may
compromise the safety of your A2B and void the warranty.
If you change components or add accessories, you do so at
your own risk because A2B may not have tested that component
or accessory for compatibility, reliability or safety on your A2B.
4.6 Brake lever adjustment
Can you comfortably operate the brakes? If not, take your A2B to
an A2B dealer and ask them to adjust the angle of the brake levers.
Alternatively, follow the instructions below to adjust the brake lever
angle:
1. Loosen the bolt underneath the brake lever with an appropriate
allen key.
2. Adjust the angle to suit.
3. Tighten up the bolt underneath, ensuring the brake lever is firmly
fixed in place.
Should you need to adjust the brakes themselves, please take
your A2B to an A2B dealer to make the required adjustments.

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4.7 Adjustment of the seat height
The seat height may have to be adjusted. Please ask your A2B
specialist dealer to adjust the seat height before your first tour. You
may also adjust the seat height on your own as indicated below:
Determination of the correct driver’s seat height
There are several ways of determining the correct seat height; the
method which can be carried out without any further auxiliary means
is described in the following: Sit on the saddle and stretch one leg.
Put your foot’s heel on the pedal which is on the lowest point of the
crank turn. Your knee should now be almost straightened.
If you are sitting straight on the saddle while having this position,
the saddle’s height is correct.
Of course, you then do not drive with legs stretched. If you put
your foot on the pedal while having the correct driving position
(ball of foot and metatarsophalangeal joint above the pedal axle),
the knee will remain slightly angled also on the lowest point of
crank turn if the saddle height has been adjusted correctly.
A short test ride is recommended to find out if the saddle is too
high. If the pelvis tilts to the right and the left in the rhythm of
pedalling, the saddle is too high. If the saddle is too low, you
will usually find it out only after many kilometres through pain in
the knees.
THEN GO AHEAD WITH HEIGHT ADJUSTMENT AS SHOWN
HYBRID HYBRID
Frame Height Frame Height
Inside Leg Height
Frame Height
1 inch / 2.5 cm
clearance
Inside Leg Height

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Owner`s manual
Height adjustment
1. The seat height can be adjusted with
a 5 mm allen key by loosening the
seat post fastening bolt.
2. After adjustment, check to ensure
the bolt is tightly fastened and
ensure there is no movement in the
seat position in any direction.
3. The seat post clamp should be
secured at 10-12 Nm.
Failure to correctly secure the seat can result in serious injury or death.
DO NOT raise the seat beyond the ‘minimum insertion’ mark on
the seat pillar.
Ensure the seat clamp bolt (seat pillar - seat post) is
tightened to 27 Nm.
4.8 Pre-load adjustment rear shock absorber
Adjust the pre-load of the rear shock absorber according to your
weight. To increase the pre-load turn the lower part of the shock
absorber clockwise. To decrease the pre-load turn the lower part of
the shock absorber anti-clockwise.
An incorrectly adjusted pre-load may result in interference
between the rack battery and the rear fender.
4.9 Re-bound adjustment rear shock absorber
The rear shock has the ability to adjust the rebound dampening.
To adjust the rebound use the red dial on the underside of the
shock absorber. The original settings from the manufacturer have it
set at the softest setiing.
4.10 Rear view mirror adjustment
Mount your A2B and align the front wheel to straight direction. Look
in the rear view mirror and adjust the mirror, so that you can see
what is behind you.
A correctly adjusted rear view mirror is essential to watch the
traffic behind of you. An incorrectly adjusted mirror mirror can result
in serious injury or death and property damage.

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5.0 Understanding your A2B
After having read this section, if you are still unsure, please ask an A2B dealer to explain any functions or features that you do
not understand before your first ride.
5.1 Starting and stopping
1. Wear your helmet and select a quiet area away from cars, other
cyclists, obstacles or other hazards.
2. For bikes with external battery, turn the battery on using the
on / off switch on the back of the battery.
3. Ensure that the power is OFF and raise the kickstand into the
riding position.
Mounting the A2B with the power ON may result in the
inadvertent actuation of the throttle and the A2B will lurch,
potentially resulting in serious injury or death and property damage.
For the same reason, turn the power OFF before dismounting.
DO NOT sit on the A2B whilst it is supported by the kickstand,
you will damage the kickstand and possibly the frame.
4. Mount your A2B and get comfortable.
5. Turn the key to position ‘A’ or ‘B’ if an optional battery is attached
to turn the battery power ON.
The throttle must be in zero position while turning the power ON
and will be activated after 2 seconds.
6. To apply motor power
twist the throttle on the
right hand side of the
handlebar gently toward
you.
7. Test the brakes at
slow speed. Left lever
actuates the rear brake
and the right lever
actuates the front
brake. Put your
weight toward the
rear and gently apply
the brakes, rear
brake first. Sudden or
excessive application
of the front brake
could throw you
over the handlebars.
Applying brakes too hard can lock up a wheel, which could
cause you to lose control and fall.

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Owner`s manual
Remember that there are power cut-off switches embedded in
the brake levers. When you apply the brakes, power to the motor
will turn OFF. Therefore, do not hold the brake lever(s) when you
want the motor to run.
Your A2B will provide instantaneous power whether you are
pedalling or not. Therefore, there is no need to pedal as you
start-up. However, the motor consumes more power during a
start from a standing stop than at any other time, even more than
climbing a hill. To conserve battery power, and increase your range,
pedal during a start from a standing stop to relieve some of the load
from the battery.
8. Check out the handling and response of your A2B. Familiarize
yourself with how the suspension responds to brake application
and rider weight shifts.
5.2 Display
A Reset button
B Mode button
C Battery State-of-Charge Indicator.
D Speedometer - displays in steps of
0.1 km/h or 0.1 mph
E Odometer / Tripometer - displays
km or miles pedalled, this could be
your total or your trip distance measured to 10 meters or 0.01 mile.
• Switching between Odometer and Tripmeter - Press the Mode
button B
• Reset Tripmeter - Switch to TRIP and press the Reset button A
for 2 seconds.
• Setting km/h /mph - Press the Reset button A and Mode
button B for more than 2 seconds to get in the setting mode.
Press the Reset button to switch between km/h and mph. Press
the Mode button for 2 seconds to return to the normal mode.
• For bikes fitted with external and Internal batteries. Alternate
state of charge display - Press and hold Mode button B for
three seconds. This will display the alternate battery capacity (on
the display it will show either BATT A or BATT B).

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5.3 Gears and Shifting
Your A2B has an 7-speed rear
derailleur controlled by the
gear shifter on the handlebar.
To make pedalling easier (e.g.
at an incline), press the lever
and shift down a gear. You then need to pedal faster in order to
maintain the same speed. If you wish to ride faster (on even terrain
or downhill), pull the lever and shift up a gear. You can now pedal
more slowly but will require more effort.
Never pedal backward while shifting gears. The chain could
derail and you could lose control, resulting in an accident that could
cause serious or fatal injury and/or property damage. Always pedal
forward at a steady pace when shifting gears.
The 7-speed rear derailleur operates independently of the motor.
Using the derailleur control, adjust the gear setting to find a gear
that makes pedalling comfortable while assisting the motor.
5.4 Lights
To switch the light on or off
there is an on and off switch
on the left hand side of the
front right.

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Owner`s manual
5.5 Luggage Carrier
Your A2B is equipped with a durable luggage carrier. In case you
need to carry luggage or any goods with your A2B, please carefully
read the following instructions before using the luggage carrier.
1. The luggage carrier is attached to the rack tube of your A2B
by 4 x T25x18 torx flat head screws. If you are frequently using
the luggage carrier, always check that the screws are secured
tightly at torque value 6-8 Nm.
2. The maximum weight that could be carried is 25 Kg.
3. Please ensure that the luggage is fastened securely, so that it
can not fall off while riding. Take care that loose straps or other
items can not get cought by the spokes or wheels while riding.
4. The luggage carrier is not designed for carrying a second rider
or an attachment of a child seat. It should also not be used to
pull a trailer.
5. The permissible load of your A2B should not be exceeded,
please refer to the specification section in the owner’s manual.
6. Do not modify the luggage carrier in any case of usage.
7. You need to distribute the weight of your luggage or goods
evenly between the two sides of the luggage carrier.
8. Please be aware when the luggage carrier is loaded, your A2B may
behave differently, especially when steering or braking the bike.
9. Once you attach your luggage on the luggage carrier, please
be aware that rear light and reflector may be obscured by your
luggage.
10. Should you require additional luggage, speak to your local
dealer to ask about an A2B optional rear carrier.
Failure to observe these instructions can result in serious or
fatal injury.

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5.6 At the end of your ride
If you have any questions, or if you feel anything about your A2B is
not as it should be, ask your A2B dealer before you ride again.
5.7 Recharge your discharged battery
Fully recharge your battery within 3 days if the battery is
completely discharged because a lithium ion battery left in a
discharged condition deteriorates much faster than a fully charged
battery. See sections 6.2 & 6.3.
5.8 Your range
Factors affecting range:
• Battery state-of-charge
• Tyre inflation pressure
• Front wheel bearings and both brakes (tight bearings
or a dragging brake shoe reduces range)
• Rider weight (it takes more energy to accelerate a heavier
person)
• Your speed and local wind conditions (range is reduced when
travelling fast against a high wind)
• Terrain (travelling on a soft surface or climbing a hill uses more
power)
• Lots of starts and stops (full power from a standing start draws
the most amperage from the battery)
Maximize your range
• Fully charge your battery before each ride
• Check tyre pressure regularly and inflate to 2.8 bar (40 psi)
(printed on the tyre sidewall)
• Have your A2B serviced periodically to ensure that the front
bearings turn freely and both brake discs do not rub the brake
shoes when they are not applied
• Minimize the weight that you carry
• Ride at slower speeds
• Accelerate more slowly and pedal as you accelerate to your
cruising speed
• Keep the chain and derailleur lubricated with bicycle
recommended chain spray

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Owner`s manual
6.0 Battery use, storage and disposal
6.1 The battery and charger
Use only the battery supplied with your A2B or a battery provided
by A2B as a replacement for the battery supplied with your A2B.
Use of any battery not supplied with your A2B will void the warranty
and may cause damage to the electrical system and the hub motor.
Improper use and poor storage of this battery will void the warranty
and may cause serious or fatal injury or other hazardous situations
including fire and property damage.
Improper use includes: using this battery with any other vehicle
or appliance, subjecting the battery to intense physical shock or
severe vibration, creating a short circuit of the discharge terminals
of the battery.
Poor storage includes: storing near excessive heat and/or open
flames, long term exposure to sunlight.
Use only the battery charger supplied with this battery. Use
of any other battery charger will void the warranty and may
cause damage to the battery, serious or fatal injury and/or other
hazardous situation.
Improper use of this battery charger will void the warranty and
may cause serious or fatal injury or other hazardous situations
including fire and property damage.
Improper use includes: blocking the fan vent on the charger
whilst the battery is charging as this will cause overheating,
subjecting it to intense physical shock or severe vibration.
The battery charger supplied with this battery is for INDOOR use
only.
Avoid any contact with water or other fluids. If the battery, charger
or any connections become wet, immediately unplug the charger
and thoroughly dry all components prior to charging the battery.