2007 YAMAHA YBR125 Owners Manual

CAUTION :
Front fork inspectionSecurely support the Motorcycle
so there is no danger of it falling
over.
1. Visual check
Check for scratches or damage
on the inner tube and traces of oil
leakage from the front fork.2. Operation check
Place the Motorcycle on a level
place.
a. Hold the Motorcycle in an
upright position and apply the
front brake.
b. Push down hard on the
handlebars several times and
check if the fork rebounds
smoothly.
If any damage or unsmooth
movement is found with the front
fork, consult a YAMAHA dealer.
Steering inspectionPeriodically inspect the condition of
the steering. Worn out or loose
steering bearings may be danger-
ous. Place a stand under the engine
to raise the front wheel off the
ground. Hold the lower end of the
front forks and try to move them
forward and backward. If any free
play can be felt, ask a YAMAHA
dealer to inspect and adjust the
steering. Inspection is easier if the
front wheel is removed.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
WARNING

Securely support the Motorcycle
so there is no danger of it falling
over.
Wheel bearingsIf there is play in the front or rear
wheel hub or if the wheel does not
turn smoothly, have a YAMAHA
dealer inspect the wheel bearings.
1. Maximum level mark
2. Minimum level markBattery1. Battery is located inside the
L.H. side panel (for removal &
installation of L.H. side panel
please refer page 6-5)
2. Open the lid.
3. Check the level of the battery
electrolyte and make sure that
the terminals are tight.
Top up with distilled water if the
electrolyte level is low.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
WARNING

When inspecting the battery, be
sure the breather hose is routed
correctly. If the breather hose is
positioned in such a way as to
cause battery electrolyte or gas to
exit onto the frame, structural and
cosmetic damage to the
Motorcycle can occur.
Battery electrolyte is poisonous
and dangerous, causing severe
burns, etc. It contains sulfuric
acid. Avoid contact with skin, eyes
or clothing.Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities
of water or milk. Follow with milk of
magnesia, beaten egg, or
vegetable oil. Call a physician
immediately. EYES: Flush with
water for 15 minutes and get
prompt medical attention.
Batteries produce explosive
gases. Keep sparks, flame,
cigarettes etc., away. Ventilate
when charging or using in an
enclosed space. Always shield
your eyes when working near
batteries. KEEP OUT OF REACH
OF CHILDREN.Replenishing the battery fluid
Normal tap water contains
minerals which are harmful to a
battery; therefore, refill only with
distilled water.
Take care not to spill battery fluid
on the chain. Battery fluid may
weaken the chain causing shorter
chain life and possibly result in an
accident A poorly maintained battery will
corrode and discharge quickly. The
battery fluid should be checked at
least once a month. The level should
be between the minimum level and
maximum level marks. Use only
distilled water if refilling is necessary.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
ENSURE THAT BATTERY ELECTROLYTE LEVEL IS MAINTAINED BETWEEN
MAX . AND MIN. MARKS. IF REQUIRED, ADD DISTILLED WATER ONLY
CAUTION :
CAUTION :WARNING

Battery storage
1. When the Motorcycle will not be
used for a month or longer,
remove the battery, fully charge it
and store it in a cool, dry place.
Completely recharge the battery
before reinstallation.
2. If the battery will be stored for
longer than two months, check
the specific gravity of the fluid at
least once a month and fully
recharge the battery when it is too
low.
3. Always make sure the
connections are correct when
putting the battery back in the
motorcycle. Make sure the
breather hose is properly
connected and is not damaged or
obstructed.
1. Main fuseFuse replacementThe fuse is located behind panel A.
(See page 6-6 for panel removal and
installation procedures.)
If the fuse is blown, turn off the main
switch. Install a new fuse of proper
amperage. Turn on the switches and
see if the electrical device operates.
If the fuse immediately blows again,
consult a YAMAHA dealer.Do not use fuse of higher
amperage rating than those
recommended. Substitution of a
fuse of improper rating can cause
extensive electrical system
damage and possibly a fire.
Specified fuse: 10A
PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
CAUTION :
1

1. Screw (2 Nos.)
2. Bolt (1Headlight bulb replacementIf the headlight bulb burns out,
replace the bulb as follows:
1. Remove the two screws from the
Head Light.
2. Loosen bolt.
3. Remove head light bezel assy.
Forward.
No.)1. Bulb holder
3. Remove headlight bulb holder
from bezel
1. Bulb (Halogen)Keep flammable products and
your hands away from the bulb
while it is on, as it is hot. Do not
touch the bulb until it cools down.
4. Remove the defective bulb.
5. Put a new bulb into position and
secure it in place with the bulb
holder.
6. Install the Head Light Assy.
7. If the headlight beam adjustment
is necessary, ask a YAMAHA
dealer to make adjustment.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
WARNING
1

1. Indicator Screws (1 No.)Turn signal and taillight
bulb replacement1. Remove the screws and the
lense.
2. Push the bulb inward and turn it
counterclockwise.
3. Place a new bulb in the socket.
Push the bulb inward and turn it
clockwise until it engages into the
socket.
4. Install the lense and the
screws.1. Tail lamp Screws (2 Nos.)
Do not over-tighten the screws as
the lense may break.
Front wheel removalIt is advisable to have a
YAMAHA dealer service the
wheel.
Securely support the
Motorcycle so there is no
danger of it falling over.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
WARNING
CAUTION :

1. Brake cable adjusting nut1. Place the Motorcycle on the
centerstand.
2. Fully loosen the brake cable
adjusting bolt at the handlebar
lever holder.
3 Fully loosen the brake cable
adjusting nut at the wheel hub and
remove the cable from the brake
cam lever.
1. Clip
2. Speedometer cable4. Remove the speedometer cable
from the front wheel side. First
remove the clip and then pull the
cable out.
1. Cotter pin
2. Axle nut5. Remove the cotter pin and axle
nut.
6. Remove the wheel axle. Make
sure the Motorcycle is properly
supported.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-29

1. StopperFront wheel installationWhen installing the front wheel,
reverse the removal procedure.
Pay attention to the following points:
1. Make sure the slot in the brake
shoe plate fits over the stopper on
the front fork outer tube.
2. Make sure the axle nut is properly
torqued and a new cotter pin is
installed.Always use a new cotter pin.
Axle nut torque:
33 ft-lb (4.55 m-kg)
3. Adjust the free play in the brake
lever.PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
WARNING
Rear wheel removalIt is advisable to service the
wheel by a YAMAHA dealer.
Securely support the
Motorcycle so there is no
danger of it falling over.
WARNING