2011 YAMAHA YBR250 maintenance

PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
6
EAU24350
Supporting the motorcycle Since 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 up-
right. 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 wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der 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 motor-
cycle stand is not available, by placinga jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU24360
Front wheel
EAU24582
To remove the front wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Disconnect the speedometer ca-
ble from the front wheel.
2. Loosen the axle nut.
3. Lift the front wheel off the ground
according to the procedure in
“Supporting the motorcycle” on
page 6-30.1. Wheel axle
2. Wheel axle pinch bolt
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
64. Remove the axle nut, pull the
wheel axle out, and then remove
the wheel. NOTICE: Do not apply
the brake after the wheel has
been removed together with the
brake disc, otherwise the brake
pads will be forced shut.
[ECA11071]
EAUW0160
To install the front wheel
1. Lift the wheel up between the fork
legs.TIPMake sure that there is enough space
between the brake pads before insert-ing the brake disc into the caliper.
2. Insert the wheel axle.
3. Lower the front wheel so that it is
on the ground.
4. Tighten the wheel axle to the spec-
ified torque.
5. Tighten the front fork pinch bolt to
the specified torque.6. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25080
Rear wheel
EAU25431
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Loosen the axle nut and the brake
torque rod nut at the brake shoe
plate.
Tightening torque:
Wheel axle:
60 Nm (6.0 m·kgf, 44 ft·lbf)
Tightening torque:
Front fork pinch bolt:
55 Nm (5.5 m·kgf, 40 ft·lbf)
1. Drive chain slack adjusting nut
2. Brake torque rod
3. Locknut
4. Brake pedal free play adjusting nut
5. Axle nut
U5D1E1E0.book Page 31 Friday, September 5, 2008 1:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6 2. Lift the rear wheel off the ground
according to the procedure on
page 6-30.
3. Disconnect the brake torque rod
from the brake shoe plate by re-
moving the nut and the bolt.
4. Remove the brake pedal free play
adjusting nut, and then disconnect
the brake rod at the brake cam-
shaft 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.
7. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove andinstall the wheel.
8. Remove the wheel.
EAUW0170
To install the rear wheel
1. 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 tight-
en the nut to the specified torque.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 speci-
fied torque.
8. Adjust the brake pedal position
and free play. (See page 6-16.)
WARNING
EWA10660
After adjusting the brake pedal free
play, check the operation of thebrake light.
Tightening torque:
Brake torque rod nut:
49 Nm (4.9 m·kgf, 36 ft·lbf)
Tightening torque:
Axle nut:
104 Nm (10.4 m·kgf, 77 ft·lbf)
U5D1E1E0.book Page 32 Friday, September 5, 2008 1:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
EAU25851
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing 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 your-
self. 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 replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
6
EAU25902
Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
U5D1E1E0.book Page 34 Friday, September 5, 2008 1:17 PM

INDEXAAir filter element, cleaning..................... 6-11
Auxiliary light bulb, replacing ................ 6-29BBattery................................................... 6-25
Brake and clutch levers, checking and
lubricating ........................................... 6-23
Brake and shift pedals, checking and
lubricating ........................................... 6-22
Brake fluid, changing ............................ 6-19
Brake fluid level, checking .................... 6-18
Brake lever .............................................. 3-6
Brake pads and shoes, checking .......... 6-17
Brake pedal ............................................. 3-7
Brake pedal position and free play,
adjusting ............................................. 6-16CCables, checking and lubricating .......... 6-21
Care ........................................................ 7-1
Catalytic converter .................................. 3-9
Clutch lever ............................................. 3-6
Clutch lever free play, adjusting ............ 6-15
Cowling and panels, removing and
installing................................................ 6-6DDimmer switch ........................................ 3-5
Display, multi-function ............................. 3-3
Drive chain, cleaning and lubricating .... 6-21
Drive chain slack ................................... 6-19EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-12
Engine oil and oil filter element ............... 6-9
Engine stop switch .................................. 3-5Engine trouble warning light ................... 3-2
FFront fork, checking .............................. 6-24
Fuel......................................................... 3-8
Fuel consumption, tips for reducing........ 5-2
Fuel level warning light ........................... 3-2
Fuel tank cap .......................................... 3-7
Fuses, replacing ................................... 6-27HHandlebar switches ................................ 3-5
Headlight bulb, replacing ...................... 6-28
Helmet holder ....................................... 3-10
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-5IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-13
Indicator and warning lights .................... 3-2LLuggage strap holders .......................... 3-12MMain switch/steering lock........................ 3-1
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control system... 6-2
Model label ............................................. 9-1NNeutral indicator light .............................. 3-2PParking ................................................... 5-3
Part locations .......................................... 2-1
Pass switch............................................. 3-5RRear brake light switch, adjusting ......... 6-17
Rear suspension, lubricating ................ 6-24
SSafety information ................................... 1-1
Seat ....................................................... 3-10
Shifting .................................................... 5-2
Shift pedal ............................................... 3-6
Shock absorber assemblies,
adjusting ............................................. 3-11
Sidestand .............................................. 3-12
Sidestand, checking and lubricating...... 6-23
Spark plug, checking ............................... 6-7
Specifications .......................................... 8-1
Speedometer........................................... 3-3
Starting the engine .................................. 5-1
Start switch.............................................. 3-5
Steering, checking................................. 6-25
Storage.................................................... 7-3
Storage compartment............................ 3-11
Supporting the motorcycle .................... 6-30TTachometer ............................................. 3-3
Throttle cable free play, checking ......... 6-12
Throttle grip and cable, checking and
lubricating ........................................... 6-22
Tires ...................................................... 6-13
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-33
Troubleshooting chart ........................... 6-34
Turn signal indicator lights ...................... 3-2
Turn signal light bulb or tail/brake light
bulb, replacing .................................... 6-29
Turn signal switch ................................... 3-5VValve clearance..................................... 6-13
Vehicle identification number .................. 9-1
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