Yuba Singlespeed - 6-speed User manual

Bicycle Owner’s Manual
Mundo Utility Bicycle
Models: Singlespeed - 6-speed

In this manual, the WARNING
sign indicates a hazardous
situation which, if not avoided,
could result in death or serious
injury.
In this manual, the CAUTION
sign indicates a hazardous
situation which, if not avoided,
may result in minor or
moderate injury
IMPORTANT KEEP FOR FUTURE REFERENCE
About this Owner's Manual
This manual explains how to ride your new bike safely.
Even if you have ridden a bicycle for years, it is important for EVERY person to
read Chapter A before riding this bicycle!
Parents should explain Chapter 1 to a child or anyone else who might not otherwise
understand this information.
This manual also shows how to perform basic maintenance. Some maintenance should
only be performed by a professional bicycle mechanic, and the manual indicates these
tasks. If you choose to perform these tasks, you should purchase a detailed repair
manual from a bicycle dealer.
Register your bicycle
Bicycle registration is the only record we have of who owns this bike. If there is ever a
need to communicate with the owner, such as providing updated safety information,
your registration is crucial. There are two easy ways to register your new bicycle:
•By mailing the warranty card located in your box.
•By emailing your information to us [e-mail] please mention date of
purchase, place of purchase, amount paid, name and ways to reach you and
model.
Assembly of your new bicycle
Assembly and the first adjustment of your bicycle take special tools and skills, it is
recommend that this should be done by a trained bicycle mechanic.
If you have any questions after reading the information in this manual, talk to your
dealer or us.
This manual conforms with these standards:
ANSI Z535.4
CPSC CFR 1512
BS 6102 : Part 1: 1992
CEN 14764, 14765, 14766, 14872

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Table of Contents
IMPORTANT KEEP FOR FUTURE REFERENCE.........................................................2
About this Owner's Manual.....................................................................................2
Register your bicycle...............................................................................................2
Assembly of your new bicycle.................................................................................2
Table of Contents .......................................................................................................3
CHAPTER 1: GUIDE TO SAFE ON-AND-OFF ROAD OPERATION.................................5
Bicycle type and use classification .............................................................................5
Condition 1..............................................................................................................5
Condition 2..............................................................................................................5
Before a first ride ........................................................................................................6
Make sure the bicycle fits........................................................................................6
Know how the bicycle performs..............................................................................6
Check the bike before every ride ................................................................................7
RULES FOR SAFE RIDING.......................................................................................10
Know and observe local bicycle riding laws..........................................................10
Watch for cars, pedestrians, and other obstacles.................................................10
Wear a helmet and proper cycling clothes............................................................10
Change your riding to be safe in variable conditions.............................................10
Riding instructions....................................................................................................13
Use your brakes carefully......................................................................................13
Use good shifting techniques................................................................................13
TAKE CARE OF YOUR BIKE.....................................................................................14
Protect your bike when parking or storing it..........................................................14
Carry repair items..................................................................................................14
Only install and use approved accessories ...........................................................14
Keep the bike clean...............................................................................................15
Avoid clamping the frame during transportation or repair .....................................15
Protect your bicycle during shipping.....................................................................15
Notice....................................................................................................................15
CHAPTER 2: MAINTENANCE.......................................................................................16
Maintenance schedule ..........................................................................................16
Recommended tools for proper bicycle maintenance...........................................17
CHAPTER 3: ADJUSTMENT.........................................................................................18
Handlebar..............................................................................................................18
Stem......................................................................................................................18
Saddle...................................................................................................................19
Headset.................................................................................................................21
Crankset................................................................................................................21
Crank arms............................................................................................................21
Pedals...................................................................................................................21
Bottom bracket .....................................................................................................21
Chain.....................................................................................................................21

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Cables...................................................................................................................22
Shifters..................................................................................................................22
Front derailleur......................................................................................................22
Rear derailleur.......................................................................................................23
To adjust the large cog position............................................................................23
Brake levers ..........................................................................................................24
Brakes...................................................................................................................25
Wheels ..................................................................................................................26
Suspension components.......................................................................................28
Accessories...........................................................................................................28
CHAPTER 4: LUBRIFICATION......................................................................................29
Stem......................................................................................................................29
Seatpost................................................................................................................29
Bottom bracket .....................................................................................................29
Pedals...................................................................................................................29
Derailleurs .............................................................................................................30
Headset.................................................................................................................30
Brakes and brake levers........................................................................................30
Wheels ..................................................................................................................30
Suspension forks...................................................................................................30
Control cables.......................................................................................................30
CHAPTER 5: CARRYING LOADS WITH YOUR UTILITY BICYCLE...............................31
About carrying a load by bicycle...............................................................................31
Getting to know your Utility Bicycle.......................................................................31
Seating on carrier seat ..........................................................................................31
Children.................................................................................................................31
Use good judgment...............................................................................................31
Pre-ride checklist......................................................................................................31
Maximum payloads...................................................................................................32
Loading platforms.....................................................................................................32
Carrier : loading platform #1..................................................................................32
Sideloaders : lateral loading platforms #2 .............................................................32
Loading tips..............................................................................................................32
Bike loading ..........................................................................................................32
Using the kickstand...............................................................................................32
Using a pole..........................................................................................................33
Carrying longloads (ladder, kayak, solar panel).....................................................33
Carrying groceries, or shopping............................................................................33
Carrying passenger and children...........................................................................33
Cam straps............................................................................................................33
For more Information................................................................................................34
Limited Warranty.......................................................................................................34

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CHAPTER 1: GUIDE TO SAFE ON-AND-OFF ROAD OPERATION
Bicycle type and use classification
Riding a bicycle in a manner beyond, or more severe than, its intended use can cause
the bicycle or part of the bicycle to fail. The following information explains the type of
riding intended for different types of bikes. Read the safety information in Chapter 1 for
further details.
Condition 1
Bikes designed for riding on a paved surface where the tires do not lose ground
contact.
Condition 1 bike types
• Drop-type handlebars including touring bikes, but not cyclocross bikes
• Triathlon, time trial, or speed bikes
• Tandems of any design
• Cruisers with wide, 26" tires and swept-back handlebar
• Any bike that folds
• Weight limit: 275 lbs (125 kg); Tandems: 550 lb (250 kg)
Condition 2
Bikes designed for riding Condition 1, plus smooth gravel roads and improved trails
with moderate grades where the tires do not lose ground contact.
Condition 2 bike types
• Hybrid bikes with 700c wheels, tires wider than 28c, and flat handlebars
• City bikes- specially-equipped hybrids
• Cyclocross bikes- with drop-type handlebars, knobby 700c tires, and cantilever or
disc brakes
• Weight limit: 300 lbs (136 kg)

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Figure 1- Minimum
stand-over height
A = 1" (25 mm) for most
bicycles
2-3" (50-75 mm) for
mountain bicycles
Mis-use of the braking system,
including over-use of the front
brake, can cause you to lose
control and fall. Avoid improper
braking by understanding and
practicing proper application of
your brakes as explained in this
manual.
Contact between your foot or
toe-clip and the front wheel or
fender can cause you to lose
control and fall. Avoid pedaling
when turning at slow speed.
Before a first ride
Make sure the bicycle fits
There should be at least 1” (25 mm) clearance between the top
tube and the rider when standing over the bicycle (Figure 1).
For mountain bikes, 2-3” (50-75 mm) clearance is
recommended.
The seat and handlebar may be adjusted to offer the best
comfort and performance. Before making these adjustments,
refer to Chapter 3.
Know how the bicycle performs
The features of your bicycle, if misused, may cause you to lose
control of the bike. Before riding fast or in more difficult
conditions, learn the function and performance of all the
mechanisms of your bike by riding at slower speeds in a flat,
empty parking lot.
If you want your bicycle to perform differently, or if you have special needs that require
different parts for the safe operation of your bike,
consult your bicycle dealer.
Learn the power of your brakes
The stopping power on bikes varies according to the
intended use of the bike. If you would like your bike to
have more, or less, stopping power, consult your
dealer about brake adjustments or other brake
options for your bicycle.
Avoid toe-clip overlap
When riding slowly, do not pedal if the handlebar is turned. It may be possible, at very
slow speeds, when the handlebar is turned, for your foot or toe-clips to contact the
front wheel or fender (Figure 2). At normal riding speeds, the handlebar does not turn
enough for this to occur.
figure 2- toeclip overlap

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A shimmy, or steering wobble,
can cause you to lose control
and fall. If you experience a
shimmy, slow down
immediately. Take your bicycle
to your dealer for inspection
and re
p
air.
A bicycle that does not work
properly can cause you to lose
control and fall. Inspect the
entire bicycle thoroughly before
every ride, and do not ride it
until any problem has been
corrected
Figure 3: -wheel quick
release
A wheel attachment device that
is not properly adjusted and
closed may allow the wheel to
be loose or come off
unexpectedly, causing you to
lose control and fall. Make sure
the wheels are properly
attached before riding the bike.
Stop riding if you have frame problems
Occasionally riders experience problems with their
frame or fork. If a frame or fork has any problem, do
not ride the bicycle.
As an example, in very rare cases, some riders may
experience
a “shimmy” or “harmonic oscillation” or “frame
vibration” at certain speeds. If you are experiencing
a shimmy, slow down immediately. Take your
bicycle directly to a dealer for inspection and repair.
Check the bike before every ride
Before every ride, inspect the bike with the following check list. If any part of the
bicycle fails the inspection, repair the bicycle by following the information provided by
this manual, or take the bike to your dealer for service. Never ride a bike with a
damaged part; have it replaced.
This is not a comprehensive maintenance program
Before every ride checklist
Wheels
Tire inflation
Brakes
Handlebar and stem
Seat and seatpost
Suspension adjustments
Lights and reflectors
Frame, fork, and components
Check the wheels
Check that the wheels are straight. Spin each wheel and watch the rim as it passes
through the brake pads or the frame. If the rim wobbles up and down or from side to
side, repair the wheel.
Check that the wheels are
properly attached. Bicycle
wheels are attached by several
systems: threaded axle nuts, a
quick-release where a lever-
actuated wheel retention
mechanism (Figure 3) allows the
wheel to be installed and
removed without tools, or a
thru-axle where the axle is

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ever ride a bike if you are not
certain the brakes are working
properly, or you if suspect a
problem with the brake cables
or hydraulic hose.
Malfunctioning brakes can
cause you to lose control and
fall. Inspect the brakes
thoroughly before every ride. If
your brakes are not working
properly, re-adjust them or take
the bike to your dealer for
service.
Figure 5- Brake pad alignment
A- Brake pad aligned with rim
surface
B- Pad and rim should be
parallel
C- Direction of rim rotation
D- 0.5-1.0 mm toe-in
Disc brakes and discs get very
hot during use and could burn
skin. Also, the disc edges may
be sharp and could cut skin.
Avoid touching the disc or disc
brake when hot, or when
rotatin
g
.
threaded through the ends of the frame or fork. For information about adjustment and
closure of the wheel attachment devices on your bicycle, see Chapter 3.
Test for proper wheel attachment. Pick up the bike and sharply hit the top of the tire
(Figure 4). The wheel must not come off, be loose, or move from side to side. Further
tests are provided in

Check the tire inflation
Inflate the tires to the air pressure recommended on the tire sidewalls.
Check the brakes
Follow the inspection instructions for the type of brake
on your bike:
Hand-rim brake- a hand lever connected to the brake
by a cable causes the brake pads to squeeze the rim.
When the brakes are not applied, the brake pads
should be 1 to 2 mm from the rim.
Squeeze each brake lever toward the handlebar to
make sure the brake moves freely and stops the bike.
If the brake lever can be pulled to the handlebar, the
brake is too loose. If the brake pads are too close to
the rim, the brake is too tight. Brake pads should be
aligned with the rim surface (Figure 5).
Disc brake- a hand lever connected to the brake
by a cable or hydraulic hose squeezes a disc
mounted on the wheel hub.
Squeeze each brake lever toward the handlebar to
make sure the brake moves freely and stops the
bike. If the brake lever can be pulled to the
handlebar, the brake is too loose. The brake pads
should be 0.25-0.75 mm away from the disc when
the brakes are not applied. If the pads are too
close, the brake is too tight, or mis-aligned.

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

Check the seat and seatpost
Make sure the seat is secure by attempting to turn the seat and seatpost in the frame,
and attempt to move the front of the seat up and down. It should not move or be loose.
Check the lights and reflectors
Make sure the lights are functioning correctly and that any batteries are charged. If the
lights use a dynamo, make sure it is mounted correctly and all attachment hardware is
tight. Make sure reflectors are clean and in position.
Check frame, fork, and components
Carefully inspect your frame, fork, and components for signs of fatigue before and after
each ride. Regularly inspect your entire bicycle for signs of fatigue stress:
• Dents
• Cracks
• Scratches
• Deformation
• Discoloration
• Unusual noises
Even if you perform regular inspections, if you exceed the limit of strength of your
bicycle or a given part, it may fail if overloaded. After any high force load, thoroughly
inspect all the parts of your bike. High force loads include crashes, but you don't have
to crash to put a high force load on your bike. For example, hitting a large hole in the
road or a sharp bump such as a railroad track can put large forces on your bike.
The manner in which you ride will determine whether your bike and its parts will last. If
you ride hard or aggressively, you should replace the bike and/or its parts more often
than riders who ride smoothly or cautiously. There are many variables: weight, speed,
technique, terrain, maintenance, riding environment (humidity, salinity, temperature,
etc.), and the frame or part itself- so it is impossible to give a precise timetable for
replacement. If you aren't sure, ask your dealer. But as a rule, it is better to err on the
safe side and replace the bike or parts more frequently.

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RULES FOR SAFE RIDING
Know and observe local bicycle riding laws
Most state and local areas have specific laws for cyclists, and you should follow them.
Local cycling clubs or your state’s Department of Transportation (or equivalent) should
be able to supply this information to you. The requirements
for items such as lights and reflectors change between areas, so check ahead.
These are a few of the more important rules of riding:
• Use proper hand signals.
• Ride single file when riding with other cyclists.
• Ride on the correct side of the road; never go against traffic.
• Ride defensively; expect the unexpected. A cyclist is hard to see, and many drivers
simply are not trained to recognize the rights and special considerations
of a bicycle rider.
Watch for cars, pedestrians, and other obstacles
Watch for and avoid potholes, drain grates, soft or low
shoulders, and other deviations which could impact your
wheels or cause them to slip. When crossing railroad tracks
or drain grates, do so carefully at a 90° angle (Figure 8). If
you are not sure of riding surface conditions, walk your bike.
If a car suddenly enters your lane, or someone unexpectedly
opens the door of a parked car, you could be involved in a
serious accident. Mount a horn or bell on your bicycle, and
use it to alert others of your approach.
Wear a helmet and proper cycling clothes
Wear a helmet that meets CPSC or CE safety testing
standards (Figure 9); it may help prevent injury.
Helmets should be removed when not riding the bicycle. If
the helmet is caught, stuck on, or stuck between objects, the
wearer could choke.
Wear protective clothing including helmet, eye protection,
and gloves. Avoid loose-fitting pants that could get caught in
the chain.
Also wear light, bright, and reflective clothing to make
yourself more visible, especially at night.
Change your riding to be safe in variable
conditions
Ride carefully in wet weather
No brakes, whatever their design, work as effectively in wet weather as they do in dry.
Even properly aligned, lubricated, and maintained brakes require greater lever pressure