2007 YAMAHA YBR250 ECU

1-3
1
SAFETY INFORMATION
as possible on both sides of the
motorcycle to minimize imbalance
or instability.
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Shifting weights can create a
sudden imbalance. Make sure that
accessories and cargo are securely
attached to the motorcycle before
riding. Check accessory mounts
and cargo restraints frequently.
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Never attach any large or heavy
items to the handlebar, front fork,
or front fender. These items,
including such cargo as sleeping
bags, duffel bags, or tents, can
create unstable handling or a slow
steering response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this motorcycle. Since Yamaha cannot
test all other accessories that may be
available, you must personally be
responsible for the proper selection,
installation and use of non-Yamaha
accessories. Use extreme caution when
selecting and installing any accessories.
Keep the following guidelines in mind,
as well as those provided under“Loading” when mounting accessories.
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Never install accessories or carry
cargo that would impair the
performance of your motorcycle.
Carefully inspect the accessory
before using it to make sure that it
does not in any way reduce ground
clearance or cornering clearance,
limit suspension travel, steering
travel or control operation, or
obscure lights or reflectors.lAccessories fitted to the
handlebar or the front fork area
can create instability due to
improper weight distribution or
aerodynamic changes. If
accessories are added to the
handlebar or front fork area, they
must be as lightweight as
possible and should be kept to a
minimum.lBulky or large accessories may
seriously affect the stability of the
motorcycle due to aerodynamic
effects. Wind may attempt to lift
the motorcycle, or the motorcycle
may become unstable in cross
winds. These accessories may
also cause instability whenpassing or being passed by large
vehicles.
lCertain accessories can displace
the operator from his or her
normal riding position. This
improper position limits the
freedom of movement of the
operator and may limit control
ability, therefore, such
accessories are not
recommended.
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Use caution when adding electrical
accessories. If electrical
accessories exceed the capacity of
the motorcycle’s electrical system,
an electric failure could result,
which could cause a dangerous
loss of lights or engine power.
Gasoline and exhaust gas
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GASOLINE IS HIGHLY
FLAMMABLE:lAlways turn the engine off when
refueling.lTake care not to spill any gasoline
on the engine or exhaust system
when refueling.lNever refuel while smoking or in
the vicinity of an open flame.
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3-9
3
INSTRUMENT AND CONTROL FUNCTIONS
EAU13800
SeatTo remove the seat1. Insert the key into the seat lock, and then turn it clockwise.
2. Pull the seat off.
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2
1. Seat lock
2. UnlockTo install the seat
1. Insert the projections on the front of the seat into the seat holders
as shown.
1. Projection
2. Seat holder2. Push the rear of the seat down tolock it in place.
3. Remove the key.Make sure that the seat is properly
secured before riding.
EAU14300
Helmet holder
1
1. Helmet holderThe helmet holder is located under the
seat.
To secure a helmet to the helmet
holder 1. Open the seat. (See page 3-9.)
2. Attach the helmet to the helmet holder, and then securely close the
seat.
EWA10160
Never ride with a helmet attached to
the helmet holder, since the helmet
may hit objects, causing loss of
control and possibly an accident.
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6-13
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU21560
TiresTo maximize the performance, durability,
and safe operation of your motorcycle,
note the following points regarding the
specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
EWA10500
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The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
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The tire air pressure must be
adjusted in accordance with the
riding speed and with the total
weight of rider, passenger, cargo,
and accessories approved for
this model.
Tire air pressure (measured
on cold tires):0 - 90 kg (0 - 198 lb):
Front:
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
250kPa (36 psi) (2.50 kgf/cm²)
Loading condition:
90 - 167 kg (198 - 368 lb)
Front:
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
250 kPa (36 psi) (2.50 kgf/cm²)
Maximum load*:
167 kg (368 lb)
* Total weight of rider, passenger, cargo and accessories
EWA11020
Because loading has an enormous
impact on the handling, braking,
performance and safety
characteristics of your motorcycle,
you should keep the following
precautions in mind.l
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NEVER OVERLOAD THE
MOTORCYCLE! Operation of an
overloaded motorcycle may
result in tire damage, loss of control, or severe injury. Make
sure that the total weight of rider,
passenger, cargo, and
accessories does not exceed the
specified maximum load for the
vehicle.
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Do not carry along loosely
packed items, which can shift
during a ride.
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Securely pack the heaviest items
close to the center of the
motorcycle and distribute the
weight evenly on both sides.
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Adjust the suspension and tire
air pressure with regard to the
load.
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Check the tire condition and air
pressure before each ride.
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6-23
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23250
Lubricating the rear
suspensionThe pivoting points of the rear
suspension must be lubricated at the
intervals specified in the periodic
maintenance and lubrication chart.Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
EAU23271
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic
maintenance and lubrication chart.
To check the condition
EWA10750
Securely support the motorcycle so
that there is no danger of it falling
over.Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation1. Place the motorcycle on a level surface and hold it in an upright
position.
2. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
ECA10590
If any damage is found or the front
fork does not operate smoothly, have
a Yamaha dealer check or repair it.
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6-24
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23280
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.1. Place a stand under the engine to raise the front wheel off the ground.
EWA10750
Securely support the motorcycle so
that there is no danger of it falling
over.2. Hold the lower ends of the front forklegs and try to move them forward
and backward. If any free play can
be felt, have a Yamaha dealer
check or repair the steering.
EAU23290
Checking the wheel bearingsThe front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrication
chart. If there is play in the wheel hub or
if the wheel does not turn smoothly,
have a Yamaha dealer check the wheel
bearings.
EAUW0100
BatteryThe battery is located under the seat.
(See page 3-9).
This model is equipped with a sealed
type (MF) battery, which does not require
any maintenance. There is no need to
check the electrolyte or to add distilled
water.
ECA10620
Never attempt to remove the battery
cell seals, as this would permanently
damage the battery.
EWA10760
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Electrolyte is poisonous and
dangerous since it contains
sulfuric acid, which causes
severe burns. Avoid any contact
with skin, eyes or clothing and
always shield your eyes when
working near batteries. In case
of contact, administer the
following FIRST AID.l
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EXTERNAL: Flush with plenty
of water.
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INTERNAL: Drink large
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6-27
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23780
Replacing the headlight bulbThis model is equipped with a quartz
bulb headlight. If the headlight bulb burns
out, replace it as follows.1. Remove the headlight unit by removing the screws.
1
1. Screw2. Disconnect the headlight coupler,and then remove the bulb cover.
2
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1. Headlight coupler
2. Bulb cover
3. Remove the headlight bulb holder
by turning it counterclockwise, and
then remove the defective bulb.1.Headlight bulb holder
EWA10790
Headlight bulbs get very hot.
Therefore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.4. Place a new headlight bulb intoposition, and then secure it with
the bulb holder.
ECA10660
Do not touch the glass part of the
headlight bulb to keep it free from oil,
otherwise the transparency of the
glass, the luminosity of the bulb, and
the bulb life will be adversely affected.
Thoroughly clean off any dirt and
fingerprints on the headlight bulb
using a cloth moistened with alcohol
or thinner.1. Do not touch the glass part of the bulb5. Install the headlight bulb cover, andthen connect the coupler.
6. Install the headlight unit by installing the screws
7. Have a Yamaha dealer adjust the headlight beam if necessary.
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6-29
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU24350
Supporting the motorcycleSince this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear wheel
or performing other maintenance
requiring the motorcycle to stand upright.
Check that the motorcycle is in a stable
and level position before starting any
maintenance. A strong wooden box can
be placed under the engine for added
stability.
To service the front wheel1. Stabilize the rear of the motorcycle by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack
under the frame in front of the rear
wheel.
2. Raise the front wheel off the ground by using a motorcycle stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a
motorcycle stand is not available, by
placing a jack either under each side of
the frame in front of the rear wheel or
under each side of the swingarm.
EAU24360
Front wheel
EAUW0180
To remove the front wheel
EWA10820
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It is advisable to have a Yamaha
dealer service the wheel.
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Securely support the motorcycle
so that there is no danger of it
falling over.
1. Loosen the front wheel axle pinch
bolt and the wheel axle.1 2
1. Wheel axle
2. Wheel axle pinch bolt
2. Lift the front wheel off the ground
according to the procedure on page
6-29.
3. Pull the wheel axle out, and then remove the wheel.
ECA11070
Do not apply the brake after the wheel
has been removed together with the
brake disc, otherwise the brake pads
will be forced shut.
EAUW0160
To install the front wheel1. Lift the wheel up between the fork legs.Make sure that there is enough space
between the brake pads before inserting
the brake disc into the caliper.2. Insert the wheel axle.
3. Lower the front wheel so that it ison the ground.
4. Tighten the wheel axle to the specified torque.
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6-30
6
PERIODIC MAINTENANCE AND MINOR REPAIRTightening torque:Wheel axle:
60 Nm (6.0 m.kgf, 44 ft.lbt)5. Tighten the front fork pinch bolt to
the specified torque.Tightening torque:Front fork pinch bolt: 55 Nm (5.5 m.kgf, 40ft.lbt)6. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25080
Rear wheel
EAU25430
To remove the rear wheel
EWA10820
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It is advisable to have a Yamaha
dealer service the wheel.
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Securely support the motorcycle
so that there is no danger of it
falling over.
1. Loosen the axle nut and the brake
torque rod nut at the brake shoe
plate.
2. Lift the rear wheel off the ground according to the procedure on page
6-29.
3. Disconnect the brake torque rod from the brake shoe plate by
removing the nut and the bolt.
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1. Drive chain slack adjusting nut
2. Brake torque rod
3. Locknut
4. Brake pedal free play adjusting nut
5. Axle nut4. Remove the brake pedal free play
adjusting nut, and then disconnect
the brake rod at the brake camshaft
lever.
5. Loosen the locknut and the drive chain adjusting nut on both ends
of the swingarm.
6. Remove the axle nut, and then pull the wheel axle out.
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