2007 YAMAHA YBR250 maintenance

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.
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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.
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU25901
Troubleshooting chart
EWA10840
Keep away open flames and do not smoke while checking or working on the \
fuel system.
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.
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