service YAMAHA YBR250 2007 Owners Manual

1-1
1
SAFETY INFORMATION
EAU10281
MOTORCYCLES ARE SINGLE TRACK
VEHICLES. THEIR SAFE USE AND
OPERATION ARE DEPENDENT UPON
THE USE OF PROPER RIDING
TECHNIQUES AS WELL AS THE
EXPERTISE OF THE OPERATOR.
EVERY OPERATOR SHOULD KNOW
THE FOLLOWING REQUIREMENTS
BEFORE RIDING THIS MOTORCYCLE.
HE OR SHE SHOULD:l
OBTAIN THOROUGH
INSTRUCTIONS FROM A
COMPETENT SOURCE ON ALL
ASPECTS OF MOTORCYCLE
OPERATION.
l
OBSERVE THE WARNINGS AND
MAINTENANCE
REQUIREMENTS IN THE
OWNER’S MANUAL.
l
OBTAIN QUALIFIED TRAINING IN
SAFE AND PROPER RIDING
TECHNIQUES.
l
OBTAIN PROFESSIONAL
TECHNICAL SERVICE AS
INDICATED BY THE OWNER’S
MANUAL AND/OR WHEN MADE
NECESSARY BY MECHANICAL
CONDITIONS.Safe riding
l
Always make pre-operation checks.
Careful checks may help prevent
an accident.
l
This motorcycle is designed to
carry the operator and a passenger.
l
The failure of motorists to detect
and recognize motorcycles in traffic
is the predominating cause of
automobile/motorcycle accidents.
Many accidents have been caused
by an automobile driver who did not
see the motorcycle. Making
yourself conspicuous appears to be
very effective in reducing the
chance of this type of accident.
Therefore:lWear a brightly colored jacket.lUse extra caution when you are
approaching and passing through
intersections, since intersections
are the most likely places for
motorcycle accidents to occur.lRide where other motorists can
see you. Avoid riding in another
motorist’s blind spot.
l
Many accidents involve
inexperienced operators. In fact, many operators who have been
involved in accidents do not even
have a current motorcycle license.
lMake sure that you are qualified
and that you only lend your
motorcycle to other qualified
operators.lKnow your skills and limits.
Staying within your limits may
help you to avoid an accident.lWe recommend that you
practice riding your motorcycle
where there is no traffic until you
have become thoroughly familiar
with the motorcycle and all of its
controls.
l
Many accidents have been caused
by error of the motorcycle operator.
A typical error made by the operator
is veering wide on a turn due to
EXCESSIVE SPEED or
undercornering (insufficient lean
angle for the speed).lAlways obey the speed limit and
never travel faster than warranted
by road and traffic conditions.lAlways signal before turning or
changing lanes. Make sure that
other motorists can see you.
cap 1.pmd
24/1/2007, 14:37
1

6-1
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU17240
Safety is an obligation of the owner.
Periodic inspection, adjustment and
lubrication will keep your vehicle in the
safest and most efficient condition
possible. The most important points of
inspection, adjustment, and lubrication
are explained on the following pages.
The intervals given in the periodic
maintenance and lubrication chart
should be simply considered as a
general guide under normal riding
conditions. However, DEPENDING ON
THE WEATHER, TERRAIN,
GEOGRAPHICAL LOCATION, AND
INDIVIDUAL USE, THE
MAINTENANCE INTERVALS MAY
NEED TO BE SHORTENED.
EWA10320
If you are not familiar with
maintenance work, have a Yamaha
dealer do it for you.
EAU17390
Owner’s tool kit1. Owner’s tool kit
2. BandThe owner’s tool kit is located under the
seat. (See page 3-9.)
The service information included in this
manual and the tools provided in the
owner’s tool kit are intended to assist
you in the performance of preventive
maintenance and minor repairs.
However, additional tools such as a
torque wrench may be necessary to
perform certain maintenance work
correctly.If you do not have the tools or experience
required for a particular job, have a
Yamaha dealer perform it for you.
EWA10350
Modifications not approved by
Yamaha may cause loss of
performance and render the vehicle
unsafe for use. Consult a Yamaha
dealer before attempting any changes.
cap 6.pmd24/1/2007, 14:37
1

6-5
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU18660
l
The air filter needs more frequent service if you are riding in unusuall\
y wet or dusty areas.
l
Hydraulic brake servicel
Regularly check and, if necessary, correct the brake fluid level.
l
Every two years replace the internal components of the brake master cylinder and caliper, and change the brake
fluid.
l
Replace the brake hoses every four years and if cracked or damaged.
cap 6.pmd24/1/2007, 14:37
5

6-20
6
PERIODIC MAINTENANCE AND MINOR REPAIRTightening torques:Locknut:
16 Nm (1.6 m.kgf, 12 ft.lbt)
Axle nut: 104 Nm (10.4 m.kgf, 77 ft.lbt)4. Adjust the brake pedal free play.
(See page 6-16.)
EWA10660
After adjusting the brake pedal free
play, check the operation of the brake
light.
EAU23022
Cleaning and lubricating the
drive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrication
chart, otherwise it will quickly wear out,
especially when riding in dusty or wet
areas. Service the drive chain as follows.
ECA10581
The drive chain must be lubricated
after washing the motorcycle and
riding in the rain.1. Clean the drive chain with keroseneand a small soft brush.
ECA11120
To prevent damaging the O-rings, do
not clean the drive chain with steam
cleaners, high-pressure washers or
inappropriate solvents.2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a special O-ring chain
lubricant.
ECA11110
Do not use engine oil or any other
lubricants for the drive chain, as they
may contain substances that could
damage the O-rings.
cap 6.pmd
24/1/2007, 14:38
20

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
l
l l
l
l
It is advisable to have a Yamaha
dealer service the wheel.
l
l l
l
l
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.
cap 6.pmd 24/1/2007, 14:38
29

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
l
l l
l
l
It is advisable to have a Yamaha
dealer service the wheel.
l
l l
l
l
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.
3
2
4 5
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.
cap 6.pmd 24/1/2007, 14:38
30

6-31
6
PERIODIC MAINTENANCE AND MINOR REPAIR
7. Push the wheel forward, and thenremove the drive chain from the
rear sprocket.The drive chain does not need to be
disassembled in order to remove and
install the wheel.8. Remove the wheel.
EAUW0170
To install the rear wheel1. Insert the wheel axle from the left- hand side, and then install the drive
chain onto the rear sprocket.
2. Install the axle nut.
3. Install the brake rod onto the brake camshaft lever, and then install the
brake pedal free play adjusting nut. 4. Connect the brake torque rod to the
brake shoe plate by installing the
bolt and the nut, and then tighten
the nut to the specified torque.
Tightening torque:Brake torque rod nut: 49 Nm (4.9 m.kgf, 36 ft.lbt)5. Adjust the drive chain slack. (See
page 6-19.)
6. Lower the rear wheel so that it is on the ground.
7. Tighten the axle nut to the specified torque.Tightening torque:Axle nut: 104 Nm (10.4 m.kgf, 77 ft.lbt)8. Adjust the brake pedal position and
free play. (See page 6-16)
EWA10660
After adjusting the brake pedal free
play, check the operation of the brake
light.
EAU25850
TroubleshootingAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems
yourself. However, should your
motorcycle require any repair, take it to
a Yamaha dealer, whose skilled
technicians have the necessary tools,
experience, and know-how to service the
motorcycle properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like
Yamaha parts, but they are often inferior,
have a shorter service life and can lead
to expensive repair bills.
cap 6.pmd 24/1/2007, 14:38
31

8-1
SPECIFICATIONS
8
Dimensions:Overall length:2025 mm (79.7 in)
Overall width: 745 mm (29.3 in)
Overall height:
1065 mm (41.9 in)
Seat height:
805 mm (31.7 in)
Wheelbase: 1360 mm (53.5 in)
Ground clearance:
190 mm (7.5 in)
Minimum turning radius:
2395 mm (94.3 in)Weight:With oil and fuel:154.0 kg (339 lb)Engine:Engine type:Air cooled 4-stroke, SOHC
Cylinder arrangement: Forward-inclined single cylinder
Displacement:
249.0 cm
3 (15.2 cu.in)
Bore x stroke:
74.0 x 58.0 mm (2.91 x 2.28 in)
Compression ratio: 9.80:1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:SAE20W40 or SAE20W50Recommended engine oil grade: API service SF, SG type or higher
Engine oil quantity:
Without oil filter element replacement 1.35 L (1.43 US qt) (1.19 imp. qt)
With oil filter element replacement
1.45 L (1.53 US qt) (1.28 imp. qt)Air filter:Air filter element:Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity:
19.2 L (5.07 US gal) (4.22 imp. gal)
Fuel reserve amount:
4.5 L (1.19 US gal) (1.00 imp. gal)
Fuel injection:Manufacturer:AISAN
Model/quantity: 1100-87F70/1Spark plug:Manufacturer/model:NGK/DR8EA
Spark plug gap:
0.6-0.7 mm (0.024 - 0.028 in)Clutch:Clutch type:Wet, multiple-discTransmission:Primary reduction system:Spur gear
Primary reduction ratio:
74/24 (3.083)
Secondary reduction system: Chain drive
Secondary reduction ratio:
44/15 (2.933)
Transmission type:
Constant mesh 5-speed
Operation: Left foot operation
Gear ratio:
1st:
36/14 (2.571)
2nd:
32/19 (1.684)
3rd:
cap 8.pmd 24/1/2007, 14:38
1