oset SPIDER 12.5 User manual

OWNERS MANUAL
OSET SPIDER 12.5
OSET SPIDER 16.0
OSET CORP
146 W. Irvington Place,
Denver, CO 80223. USA.
303 990-2390.
http://www.OSETBIKES.com
[email protected]
(See distributor details on the back cover)

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INTRODUCTION:
A WORD ABOUT THIS OWNER’S MANUAL AND SAFETY:
Firstly, thank you for purchasing an OSET Electric Mini Trials Bike. This is a
serious piece of machinery designed for use by children in fully controlled and
safe environments. As the purchaser/owner of the machine, YOU are the
responsible adult with the task of keeping the rider(s) safe at all times. If you
defer this task to another adult, it is YOUR RESPONSIBILITY to pass this
owners manual and all relevant information to whoever will take on this role, and
ensure without question that the rider is controlled and taught in a safe manner.
Your OSET is very adjustable and can be specifically set up for the rider. Please
do not allow the machine to be used or adjusted by other children or adults.
There are likely to be many children asking for a ride. DO NOT ALLOW THIS TO
HAPPEN. It is likely you know the abilities, levels of concentration and attention
span of the child you purchased the machine for. EVERY CHILD IS DIFFERENT
and it is impossible for you to properly supervise other children.
Your OSET is driven by a powerful electric motor. The speed dial MUST be
adjusted to suit the abilities of the rider. Please remember that even when the
speed is set to a slow setting, the torque on these motors is virtually instant. This
means that opening the throttle will propel the machine to the set speed virtually
instantly. For developing good riding skills this is a wonderful feature, as it will
teach the rider throttle control at a very early age. If the speed is set too high,
then the rider will accelerate very quickly to a speed they are not comfortable
with. In a ‘panic’ situation, riders tend to open the throttle more. This could result
in a crash, serious injury or death, as well as damage to the machine. Your
OSET has great capabilities, and can grow with the skills of the rider to very high
levels, but it is IMPERITIVE that the responsible adult controls the entire learning
process and gives full attention at all times. IT IS YOUR RESPONSIBILITY TO
FORESEE ALL POTENTIAL SITUATIONS AND CONTROL THE RIDING
ENVIRONMENT ACCORDINGLY. This means not just the machine and the
rider, but also the riding terrain and environment.
Our machines are virtually silent, and can be used in many places that gasoline
bikes can not. They are brilliant for practicing in back yards, front yards, garages,
and even inside houses!
OSET Mini Bikes are designed for off road use only and must not be used on
public roads or sidewalks. Please check and obey all local laws. OSET’s may
only be ridden in safe areas where all laws are being followed and all required
permissions are given.
OSET’s are amazingly capable, and can be used from the earliest stages of
learning to ride all the way through to National Children’s Motorcycle Trials
Competitions. The secret of learning to ride well is being able to ride a lot.
OSET’s enable this to happen, and can make the learning process very gratifying
for both the children and the adults. Thanks again for purchasing an OSET, and
we hope you, and your child, will enjoy the ride!
Ian Smith. President, OSET CORP.

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PLEASE READ THIS OWNER’S MANUAL
PRIOR TO OPERATION!
To ensure optimum performance from your new OSET, and to ensure
safe operation, it is important to fully understand the features of the
machine. This manual contains IMPORTANT INFORMATION that every
owner must fully understand.
PARENTS/GUARDIANS
If a child will operate your OSET, it is YOUR
RESPONSIBILITY to set up the machine, and make sure it is operated
correctly and safely. Your OSET features a speed limitation dial that
must be set for the abilities of the rider. This dial is positioned so a tool
must be used to change the speed setting. This must be set by the
responsible supervising adult. Never allow the child to alter the setting, or
to ride without suitable supervision. Instructing and practicing in a
controlled situation will allow the child to learn how to operate the
machine safely, and under control. The child’s enjoyment will be greatly
enhanced if they feel safe during the initial learning process. Please
follow the instructions contained in this manual before operating the
machine.
SERVICE/WARRANTY
For all questions regarding your OSET Mini Bike, please contact your
local retailer/distributor.
See distributor contact information on the back cover of this
manual.
OFF ROAD USE ONLY!
OSET Mini Bikes are designed for off road use only and must not be
used on public roads or sidewalks. Please check and obey all local laws.

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Important Symbols and Terms
This Owner’s Manual uses the following symbols and terms to call
your attention to Warnings, Cautions and Notes:
Term: WARNING
Meaning: This term calls attention to a Warning. A Warning indicates a
potentially hazardous situation which, if not avoided, could result in bodily injury
or death, in addition to property damage. Read the text accompanying the
warning to be aware of the specific hazard.
Term: CAUTION
Meaning: This term calls attention to a Caution. A Caution indicates a potentially
hazardous situation which, if not avoided, may result in damage to equipment or
inadvertent system failure. Read the text accompanying the Caution to be aware
of the specific hazard and avoid damage or system failure.
Term: NOTE:
Meaning: This term calls attention to a Note. The text accompanying a Note
provides helpful or other important related information.
Please read, understand and follow all Warning, Caution and Note
notices on your OSET electric bike and those included in this
Manual. If you do not understand any of this important information,
please contact your selling dealer/distributor or the OSET Customer
Service Department listed on the back cover of this manual.

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WARNING: OFFROAD USE ONLY.
It is illegal and hazardous to use this vehicle on streets and thoroughfares. Use
on streets exposes the rider to hazards from motorists and other vehicles. Use
on streets can lead to accidents resulting in death or serious injury, and property
damage. Check local laws and regulations to find out where and how you
may use this product legally.
WARNING: ADULT SUPERVISION REQUIRED.
This vehicle must be used in the presence of adult supervision to insure that safe
riding practices are established and followed. Even though a child is of the
recommended age to use this vehicle, not all children have the strength, skills or
judgment needed to operate this vehicle safely. A parent should supervise their
child’s operation of this vehicle at all times. Parents should permit continued use
of this vehicle only if they determine that their child has the ability and judgment
to operate the vehicle safely.
WARNING: FOLLOW SAFE RIDING PRACTICES.
• OPERATOR ONLY! NO PASSENGERS!
• Long hair, loose clothing or items worn by the rider must be covered to prevent
entanglement in moving parts of the vehicle or surroundings while riding.
• Do not exceed the weight limit. Heavier riders may significantly reduce
performance and/or render the vehicle unstable and/or over-tax the brakes and
other control devices. Heavier riders may cause structural damage not covered
by the warranty.
• Do not touch any moving or hot parts.
• Do not ride at night or under other low visibility conditions.
• Do not immerse this vehicle in water.
• Do not ride on steep or uneven surfaces. Steep or uneven surfaces greatly
increase the likelihood of loss-of-control and a fall.
• Do not ride faster than conditions permit for safe operation. Excess speed
greatly increases the likelihood of loss-of-control and a fall.
• The rider should be securely seated on the vehicle ready to ride with the
kickstand up before turning on the vehicle.
WARNING: WEAR PROTECTIVE EQUIPMENT,
ESPECIALLY A HELMET AND EYE PROTECTION.
A high quality helmet approved by your county’s governing body is the single
most effective way to reduce the severity of an injury in the event of an accident.
ALWAYS use an approved helmet when riding this vehicle. As this vehicle is
intended for OFF-ROAD use, there is a very high likelihood that dirt and other
debris will be thrown into the air, presenting the risk of eye injury if protective
eyewear is not used.
OFF-ROAD riding presents many hazards such as loose dirt and gravel,
obstacles and other difficult-to-see-and-avoid conditions. The possibility of a fall
is high. Wear wrist, knee and elbow protection. Motorcycle leathers can prevent
abrasion injuries in the event of a fall. Failure to use appropriate safety
equipment greatly increases the likelihood of death or serious injury in the event
of an accident.

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WARNING: PROPER MAINTENANCE OF THIS VEHICLE
IS REQUIRED.
Failure to maintain this vehicle in proper operating condition can lead to an
accident resulting in death or serious injury, and property damage. If you have
any questions about the proper care and maintenance of this vehicle, consult
your selling dealer/distributor or call OSET Customer Service on the number
listed on the back cover of this manual. Before each ride, make sure that all bolts
and nuts are fastened securely and that the tires are properly inflated. Before
each ride, check that the throttle and brake controls are operating freely. Adjust
and lubricate the drive chain as necessary. See pages 14-25 of this manual for
additional details regarding service, repair and maintenance. This vehicle should
be returned for periodic maintenance to your selling dealer AT LEAST once per
year, but more frequently if used under severe conditions.

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WARNINGS!
Failure to obey all of the warnings & instructions contained in this
manual may result in serious injury or death and permanent
damage to your OSET.
Safety Responsibilities
It’s up to you. We’ve done everything we can to supply you with a safe and
reliable product. Please read, understand and practice the following guidelines
for safe operation of your OSET electric Trials Bike:
• Always follow the Pre-Ride Checklist on page 26 before every ride.
• Do not operate your OSET if any damage is apparent. Immediately contact
your local retailer/distributor or OSET Customer Service.
•Supervision: Riders must be supervised by responsible adults at all times.
The rider should never be beyond eye and voice range. An adult must ALWAYS
assess and approve the riding conditions and the bike preparedness before the
bike is ridden. Always ensure the rider is cautious, maintaining complete control
and a reasonable speed. Ensure the terrain is suited to the skills of the rider.
• Helmets & Safety Attire: There is no single factor that works better at reducing
the severity of injuries sustained in accidents more than a quality helmet. Please
don’t ever allow your OSET to be ridden without one. Riders should also wear
suitable riding gear, eye protection and boots. Boots should NOT HAVE LACES.
Shoe laces and loose clothing, or even long hair could potentially get caught in
wheels, chains, or sprockets.
• One Rider Only: Your bike was engineered to carry one rider and no (0)
passengers. Carrying a passenger would overload the machine and alter the
handling. Do not allow this to happen.
• Do not overload the bike: OSET’s are designed for small, lightweight riders.
Exceeding the weight limitations will adversely affect the handling of the
machine, and potentially cause damage.
• It’s the law; obey it: Obey all laws. OSET’s are for OFF-ROAD USE ONLY.
OSET bikes can not be used on public roads or sidewalks. The purchaser,
owner, and/or riders of this machine are directly responsible to know and obey all
local, state, and federal laws regarding the riding and use of this machine.
• Weather & Riding Conditions: Bike brakes don’t work well when they’re wet.
Don’t ride in the rain or snow. Please be aware that distance to stop may double
or triple over the distance that it takes under dry conditions. Ride more slowly,
and anticipate your stops by applying the brakes MUCH earlier. Don’t allow
children to ride on slopes that are too steep for their ability.
• Night time: Don’t ride after dark or in low light conditions.
• Maintenance: It worked fine when we put it in the box: Please maintain your
bike. There are instructions here in this manual. We haven’t figured out how to
make a bike that takes care of itself. Check the brakes and the tires and the
tightness of all those important fasteners before each and every ride. Pretend
that you’re a pilot doing a walk-around of his airplane before taking-off. The pilot
knows that his life depends on the airworthiness of his airplane; the rider’s life

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depends on the preparedness of your bike. Please have your bike checked by a
qualified mechanic AT LEAST once a year. It’s a small investment in the well-
being of the rider.
• Batteries: We have equipped your OSET electric bike with sealed lead acid
batteries. We have devoted an entire chapter of this manual to the batteries.
Please read and understand this important information. As always, if you
have any questions, please don’t hesitate to contact us.
- Read this manual cover to cover: There is a lot of important information that
you need to know. Do not guess how to adjust the machine, charge it or ride it.
We have recommendations that will instruct how to set –up, maintain, and ride
your OSET. Please read them thoroughly.
- Call us with questions or problems: We can be reached at the numbers
listed on the back cover of this manual. You can also get assistance from the
OSET dealers.
IN SUMMARY:
1. SUPERVISION. A responsible adult must supervise at all times.
2. WEAR A HELMET & SAFETY GEAR. The rider must wear a helmet
& appropriate safety gear EVERY TIME.
3. NO PASSENGERS.
4. DO NOT EXCEED THE WEIGHT LIMITATIONS OF THE MACHINE.
5. OBEY ALL LAWS
6. RIDING CONDITIONS. Braking and traction are significantly
reduced in wet or slippery conditions. Terrain varies, so be
responsible!
7. DO NOT RIDE in low light conditions.
8. PLEASE MAINTAIN YOUR BIKE.
9. CARE FOR YOUR BATTERIES.
10. READ, STUDY AND UNDERSTAND THIS ENTIRE MANUAL.
11. If you don’t understand any aspect of the use and care of your
bike, PLEASE call OSET Customer Service.
WARNING!
OSET Mini Bikes are designed to operate at 24 volts only. Use of any
battery voltage higher than 24 volts will result in motor failure. OSET CORP
considers such modifications and/or changes to its products to be a
material alteration of any such products, thereby voiding any warranties
and/or guarantees in their entirety and will not be responsible for any
and/or all injuries, death and/or other damage(s) caused by any such
modifications.

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INDEX
Introduction: - Page 2
Please Read!: - Page 3
Warnings, Cautions and Notes: - Page 4
Contents: - Page 9
Specifications – OSET Spider 12.5: - Page 10
Specifications – OSET Spider 16.0: - Page 11
Component Chart: - Page 12
Unpacking and Assembly: - Page 13
COMPONENT DETAILS:
Switch Plate: - Page 14
Key Switch
Speed Dial Potentiometer
Charger Port
Charge Indicator: - Page 15
Drive Train: - Page 16
Chain Adjustment
Motor Performance: - Page 17
Suspension: - Page 17
Daily Maintenance and Cleaning: - Page 17
Cleaning: - Page 18
Front Wheel Removal/Installation: - Page 18
Rear Wheel Removal/Installation: - Page 19
Front Brake Adjustment – OSET 12.5: - Page 20
Front Brake Adjustment – OSET 16.0: - Page 20
Rear Brake Adjustment/Operation: - Page 21
Battery Use, Care and Maintenance: - Page 22
Charging Instructions: - Page 23
Important Notes about Charging - Page 23
Battery Removal and Installation - Page 24
Long Term Storage: - Page 25
Battery Disposal: - Page 25
Setting Up Your OSET for Riding: - Page 25
Riding Instructions and Safety Tips: - Page 26
1. Stationary Learning: - Page 26
2. First Ride: - Page 27
3. Learning to Stand Up: - Page 28
4. Learning Some Technique: - Page 29
Contact Us: - Page 30
Limited Warranty: - Page 31

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SPECIFICATIONS – OSET SPIDER 12.5
Performance:
- Maximum Speed - 12-14mph
- Maximum Range - 8 miles
- Weight Limit (Rider) - 50 lbs
NOTE!
Many factors affect speed and range capabilities. Terrain, average speed, rider
weight, tire pressures, wind, hills etc all have an impact.
Chasis:
- Frame - Steel
- Suspension (Front) - Telescopic.
- Suspension (Rear) - 100mm Spring.
- Wheels - 12.5” Aluminum alloy.
- Tires - 12.5” x 2.4” Pneumatic. Tube type.
- Brake (Front) - V-Brake
- Brake (Rear) - Band Brake, 80mm diameter.
- Foot pegs - Forged Steel.
- Handlebars - Steel. 520mm width.
Motor:
- 500 watt brush type. 24 Volt.
- Gearing – 13T front sprocket, 90T rear. #25 chain.
Controller:
- 24 volt, 40 amp pulse width modulating, with inline relay and fuse.
- External ‘speed dial’ potentiometer speed control.
Throttle:
- Twist Type.
Batteries:
- 2 X 12 volt 8.5 amp hour sealed lead acid. 2 batteries in series.
- Dimensions - 151mm x 65mm x 94mm.
- Weight – 6.06 lbs per battery.
Keys, Dials and Ports:
- Key Switch.
- Speed Dial Potentiometer
- 24 Volt Charger Port.
Size:
- Wheelbase - 28”
- Seat Height - 15”
- Ground Clearance - 8”
- Handlebar Height - 25”
- Weight (without batteries) - 35 lbs
- Weight (with batteries) - 47 lbs

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SPECIFICATIONS – OSET SPIDER 16.0
Performance:
- Maximum Speed - 15-17mph
- Maximum Range - 8 miles
- Weight Limit (Rider) - 85 lbs
NOTE!
Many factors affect speed and range capabilities. Terrain, average speed, rider
weight, tire pressures, wind, hills etc all have an impact.
Chasis:
- Frame - Steel
- Suspension (Front) - Telescopic.
- Suspension (Rear) - 125mm Spring.
- Wheels - 16” Aluminum alloy.
- Tires - 16” x 2.4” Pneumatic. Tube type.
- Brake (Front) - Mechanical disc.
- Brake (Rear) - Band Brake,100mm diameter.
- Foot pegs - Forged Steel.
- Handlebars - Steel. 560mm width.
Motor:
- 600 watt brush type. 24 Volt.
- Gearing – 11T front sprocket, 90T rear. #25 chain.
Controller:
- 24 volt, 40 amp pulse width modulating, with inline relay and fuse.
- External ‘speed dial’ potentiometer speed control.
Throttle:
- Twist Type.
Batteries:
- 2 X 12 volt 10 amp hour sealed lead acid. 2 batteries in series.
- Dimensions - 151mm x 65mm x 111mm.
- Weight – 7.05 lbs per battery.
Keys, Dials and Ports:
- Key Switch.
- Speed Dial Potentiometer
- 24 Volt Charger Port.
Size:
- Wheelbase - 35”
- Seat Height - 18.5”
- Ground Clearance - 8.75”
- Handlebar Height - 30”
- Weight (without batteries) - 43 lbs
- Weight (with batteries) - 57 lbs

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COMPONENT CHART
The ‘switch-plate’ is located beneath the seat area,
behind and above the batteries. As the rider sits,
the key switch is on the right, the back side of the
‘speed dial’ potentiometer is in the middle, and the
charge port on the left. Please note, the toggle
switch in this picture has been replaced by a key
switch on production models.
The chain guard is designed to protect people
close to the OSET bike from injury.
NOTE!
Under no circumstances should any hands or other
body parts be close to a moving chain. Riders
should wear boots without laces, and not have any
loose clothing that could be caught by the chain.
The Spider 16.0 features a front disc brake, as
opposed to the ‘V’ Brake on the Spider 12.5.

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UNPACKING AND ASSEMBLY:
WARNING!
Failure to properly assemble and adjust your bike prior to use may result in an
accident resulting in death, serious injury and/or property damage. If you are
uncertain about any aspect of the assembly and adjustment of your bike, seek
help from a qualified mechanic or the OSET Customer Service Department.
WARNING!
There are no user serviceable elements incorporated into the motor, motor
controller, batteries, battery charger, throttle, or wiring harness of your OSET
electric bike. DO NOT ATTEMPT TO DISASSEMBLE OR ADJUST ANY OF
THESE COMPONENTS. Doing so may cause extensive damage to these
components, will void your warranty, and may cause a hazardous condition. If
you cannot resolve a problem using this owners manual, contact your OSET
authorized dealer, or call the OSET Customer Service Department for
assistance.
NOTE!
If you purchased your OSET at a local retailer your machine may be fully
adjusted and ready to ride. If you purchased your OSET in the carton, please
carefully follow the instructions below and any supplemental instructions to finish
the assembly and adjustment of your OSET.
1 Remove your OSET from the box.
2 Lower kickstand and place your OSET on a solid & level surface.
3 Remove all the packing materials.
4 Using the supplied allen wrench, make sure the steering stem is in the forward
facing position and tighten the top and side bolts securely and evenly. Secure the
handlebars tightly in the steering stem. Double check tightness and alignment.
Adjust the brake lever positions to suit the rider.
5 Check tire pressure of both tires and confirm they are properly inflated to
30-40 psi.
6 Unpack charger from its box and charge the batteries while thoroughly reading
the complete owners manual. (See the Charging Instructions on pages 23).
7 Compress each brake lever in turn. The lever should not compress completely
to the bar Each individual brake should hold the bike securely when you push the
OSET against the brake. If your brake needs adjustment, follow the instructions
on page 20. For beginning riders adjust the front brake so it will not lock the
wheel easily. Learning riders should be aware which lever operates which brake.
8. For maximum battery life, always fully charge before operating your OSET for
the first time. (See page 23 for charging instructions).
9. While your batteries are charging, please Read Your Owners Manual
completely.
Now your OSET is fully assembled, adjusted and checked. Once the
batteries are fully charged, your OSET will be ready to ride safely.

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SWITCH PLATE:
The ‘switch plate’ is under the seat area and is the location for several important
items, as follows:
Key Switch:
The key switch turns the power on
and off. When the rider is sitting on
the bike, this is located underneath
them on the right side of the bike.
This location encourages the rider
to turn the key with their right hand.
The key is removable, and should
be removed when the bike is not in
use.
Potentiometer:
The ‘speed dial’ potentiometer
allows the responsible adult to set
the speed anywhere from 0 mph to
maximum. The position of the
speed dial is deliberately awkward
to get to, and should only be altered
by a responsible adult. A
screwdriver can be used for any
changes. It is important that all
people are away from the bike
during this operation. When
changing the settings make sure
the side-stand is down. After
making a change, push the bike
against the side-stand to raise the
rear wheel. With the power on, turn
the twist-grip throttle fully open to
check the top speed. Bear in mind
that the dial is not completely linear.
Do not guess the settings. Always
check before allowing the rider back
on the bike.
Charger Port:
When it’s time to recharge the bike,
the battery charger connector
attaches to this port. Before
attaching, ensure that the power is
switched to the off position. Please
refer to the battery and charging
section (page 23) of this manual for
more information.
Please Note: All pictures are of pre-production
prototypes, so could differ from the final
production machines.

15
WARNING!
If power is turned on while the throttle is open, the bike will accelerate
immediately. This is potentially very dangerous. The rider’s right hand should be
used to switch the power on, with no hands on the throttle.
WARNING!
It is very important to keep everyone clear of the bike when changing and
checking the speed setting. The dial is very sensitive to small adjustments. Do
not guess at changes. Always check before the rider gets back on.
WARNING!
The power must be switched to the off position before attaching and plugging in
the charger.
CHARGE INDICATOR:
The battery charge indicator is
located on the throttle assembly
and shows the state of the
batteries. The indicator lights can
be checked at any time to
determine if the main power is off or
on. Always turn the power off and
remove the key when the bike is not
in use.

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DRIVE TRAIN:
Your OSET features a traditional chain and sprockets, covered by a plastic
chain-guard. It is direct drive, with no gears. With the motor mounted in the
swingarm, suspension movement has no effect on tension. However, the chain
does need to be checked and adjusted regularly, especially when the bike is
new. The chain must be checked before every ride and adjusted as necessary.
There should be very little slack in the chain. Adjustment is done as follows:
1. Ensure power is turned off.
2. Detach chain guard by removing 4 bolts (a).
3. Loosen axle nuts (b) and band brake mount bolt (c).
4. Turn adjustment nuts evenly on both sides. Very small movements can
make a big difference. Do not tighten so much there is no slack at all. It
should be ‘taught’, not ‘tight‘.
5. While the chain guard is off, lubricate the chain & check the sprocket bolts
for tightness.
6. Reverse the above procedure, ensuring all bolts are tight.
7. Check the wheel for alignment, and the chain for tension.
WARNING!
Failure to maintain and adjust the
chain and align the wheel correctly
could result in the chain jumping off
the sprockets, causing a potentially
dangerous and damaging condition.

17
MOTOR PERFORMANCE:
The motor has a thermal sensor which measures the motor’s internal
temperature and will shut the motor down before overheating causes any
irreparable damage. It will reset itself in approximately 15 to 30 minutes.
Motor thermal shutdown can occur when riding in situations that stress the motor,
such as long up-hills or continuous full throttle operation when there is no rest
period for the motor.
SUSPENSION:
OSET’s feature both front and rear suspension.
Front Suspension:
The front suspension is of the telescopic variety, and is non-adjustable.
Rear Suspension:
Your OSET is equipped with a single coil spring type rear shock. For a
harder/stiffer ride at the rear tighten the adjustment ring in a clockwise direction.
For a softer ride, loosen the adjuster by turning anti-clockwise.
DAILY MAINTENANCE AND CLEANING:
- Keep your OSET clean and dry. Clean using the recommended
procedure.
- Check all components for tightness and adjustment, including
handlebars, levers, axles, chain, brakes.
- Check the speed dial potentiometer setting.

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- Check the tires for proper inflation. Also, inspect the tires for
damage.
CLEANING:
Cleaning and maintaining your OSET correctly will provide a more enjoyable
ownership and riding experience. By hand cleaning the bike, you can
simultaneously inspect all of the components. We recommend cleaning be done
with a damp cloth. Never use a hose and never pour water onto the bike. A
hose or power washer may cause irreparable damage to sensitive
components.
WARNING!
Water and electrical components do not mix! Do not get water onto the controller,
throttle or wiring. Failure to follow this instruction could result in permanent
damage, and could cause erratic machine behavior, leading to possible injury or
death.
FRONT WHEEL REMOVAL AND INSTALLATION:
- Ensure power is switched off.
- Lift the bike onto a block or stand so the wheels are off the ground.
- On OSET 12.5, disconnect the V-Brake cable by squeezing the two
sides together and release the cable end from the mount.
- Loosen the axle bolts and lower the wheel away from the front
forks.
- To re-install the wheel, reverse the above procedure and ensure
the wheel is aligned correctly and the axle bolts are tight. Spin the
wheel to ensure it is centered and spins freely.

19
REAR WHEEL REMOVAL AND INSTALLATION:
1. Ensure power is switched off.
2. Lift the bike onto a block or stand
so the wheels are off the ground.
3. Remove the chain-guard by
removing the 4 bolts securing it.
4. Release the band brake cable by
undoing the cable pinch bolt (a).
5. Remove the band brake securing
bolt.
6. Loosen the axle bolts.
7. Loosen the chain adjustment
nuts to the point where the wheel
can be pushed forward, and the
chain slipped off to the right of the
sprockets.
8. Pull back on the wheel to remove
it.
To re-install the wheel reverse the
above procedures. Ensure the
chain is correctly adjusted, the
wheel is aligned, and all nuts and
bolts are tight. When everything
else is tight, re-attach the rear band
brake cable pinch bolt such that the
brake is adjusted correctly. Minor
adjustments can be made at the
brake lever.

20
FRONT BRAKE ADJUSTMENT – OSET 12.5:
- Using an allen wrench, adjust the vertical height and rotation of each brake pad
so each pad is level and square on the rim.
- Re-tighten each pad once it is in the correct position. (Make certain that the
pads are centered on the rim and do not rub on the tire or fall below the rim.)
- Using an allen wrench, loosen the cable fixing bolt.
- Check to make certain that the cable noodle (curved pipe) is properly seated in
the RH brake arm link.
- Check to make certain that the black rubber boot is not binding the brake link
wire.
- By pulling on the loose end of the brake link wire, tighten the brake arms until
each brake pad is 2 mm from the rim.
- Retighten the brake link wire fixing bolt with the 5 mm Allen wrench. Test that
the cable will not slip, by pulling hard on the lever a number of times.
FRONT BRAKE ADJUSTMENT – OSET 16.0:
- Using an allen wrench, loosen the brake cable fixing bolt.
- With the wheel raised, manually pull up the brake caliper arm until there is
resistance when you try to spin the wheel.
- Re-tighten the cable fixing bolt. Test that the cable will not slip, by pulling hard
on the lever a number of times.
- Fine adjustments can be made at the handlebar lever.
- If the wheel does not spin freely with the brake released, the caliper position
itself can be moved by using an allen on the back side of the caliper.
-
WARNING!
OSET brakes are adjustable. Beginning riders should have the front brake
‘backed off’ somewhat so it does not bite too suddenly. As the rider gets better,
the brake can be tightened up for a quicker action.
REAR BRAKE ADJUSTMENT AND OPERATION:
All brakes need periodic adjustment. Band brakes should only be adjusted by a
qualified service technician. If and when your brake shows any decline in
efficiency or needs adjustment, it is very strongly recommends you take your bike
to your local retailer for maintenance. Improper adjustment of your brake can
cause poor braking and could lead to an accident and very serious injury.