2014 YAMAHA YBR125 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screws. NOTICE: Do not over-
ti g hten the screws, otherwise
the lens may break.
[ECA10682] EAU24205
Replacin
g a turn sig nal light
b ul b1. Remove the turn signal light lens
by removing the screw.
2. Remove the burnt-out bulb by pushing it in and turning it coun-
terclockwise.
3. Insert a new bulb into the socket, push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screw. NOTICE: Do not over-
ti g hten the screw, otherwise the
lens may break.
[ECA11192] EAU45226
Replacin
g the auxiliary li ght
b ul b If the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit. (See page 6-30.)
2. Remove the auxiliary light bulb socket (together with the bulb) by
pulling it out.
3. Remove the burnt-out bulb by pulling it out.
1. Tail/brake light bulb
1. Screw
1
1. Auxiliary light bulb socket
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
64. Insert a new bulb into the socket.
5. Install the socket (together with
the bulb) by pushing it in.
6. Install the headlight unit.
EAU24361
Front wheel
EAU56302
To remove the front wheel
WARNING
EWA10822
To avoi d injury, securely support the
vehicle so there is no dan ger of it
fallin g over.1. Remove the rubber cap, and then
loosen the wheel axle nut.
2. Place the motorcycle on the cen- terstand. 3. Disconnect the speedometer ca-
ble from the front wheel.
4. Remove the wheel axle nut and the washer.
5. Pull the wheel axle out, and then remove the wheel. NOTICE: Do
not apply the b rake after the
wheel an d b rake disc have b een
remove d, otherwise the brake
pa ds will be forced shut.
[ECA11073]
1. Auxiliary light bulb
1
1. Rubber cap
2. Axle nut
3. Washer
1. Speedometer cable
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
6
To install the front wheel
1. Install the speedometer gear unit into the wheel hub so that the pro-
jections mesh with the slots.
2. 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 and that the slot in
the speedometer gear unit fits over the
retainer on the fork leg.3. Insert the wheel axle, and then in-stall the washer and axle nut.
4. Take the motorcycle off the cen- terstand so that the front wheel is
on the ground, and then put the
sidestand down.
5. Tighten the axle nut to the speci- fied torque, and then install the
rubber cap so that it fits over the
washer. 6. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
7. Connect the speedometer cable.
1. Wheel axle
1. Speedometer gear unit
1
1. Speedometer gear unit retainer
Ti ghtenin g torque:
Axle nut:
59 Nm (5.9 m·kgf, 43 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-35
6
EAU25081
Rear wheel
EAU56650
To remove the rear wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no dan ger of it
fallin g over.1. Loosen the axle nut and the brake
torque rod nut at the brake shoe
plate.
2. Disconnect the brake torque rod from the brake shoe plate by re-
moving the brake torque rod cot-
ter pin, the nut, and the bolt. 3. Place the motorcycle on the cen-
terstand.
4. Remove the brake pedal free play adjusting nut, and then discon-
nect the brake rod from the brake
camshaft lever. 5. Loosen the drive chain puller lock-
nut and the drive chain slack ad-
justing bolt on both ends of the
swingarm.
1. Axle nut
2. Brake torque rod
3. Brake torque rod nut and bolt
4. Brake torque rod cotter pin
13
2
4
1. Brake pedal free play adjusting nut
2. Brake rod
3. Brake camshaft lever
1. Wheel axle
2. Drive chain puller locknut
3. Drive chain slack adjusting bolt
3
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
6
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 and
install the wheel.8. Remove the wheel.
To install the rear wheel 1. Install the wheel by inserting the wheel axle from the left-hand side.
2. Install the drive chain onto the rear sprocket.
3. Install the axle nut.
4. Install the brake rod onto the brake camshaft lever, and then in-
stall the brake pedal free play ad-
justing nut onto the brake rod.
5. Connect the brake torque rod to the brake shoe plate by installing
the bolt and nut.
6. Adjust the drive chain slack. (See page 6-21.) 7. Take the motorcycle off the cen-
terstand so that the rear wheel is
on the ground, and then put the
sidestand down.
8. Tighten the brake torque rod nut and axle nut to the specified
torques.
9. Insert a new cotter pin.
10. Adjust the brake pedal free play. (See page 6-18.)
WARNING
EWA10661
After a djustin g the brake ped al free
play, check the operation of the
b rake li ght.
EAU25852
Trou bleshootin gAlthough 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 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
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot li ghts from water
Ti ghtenin g torques:
Brake torque rod nut: 19 Nm (1.9 m·kgf, 14 ft·lbf)
Axle nut:
80 Nm (8.0 m·kgf, 58 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-37
6heaters or furnaces. Gasoline or
g
asoline vapors can i gnite or ex-
plo de, causin g severe injury or prop-
erty damag e.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
6
EAU45734
Troubleshootin g chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter
or the kickstarter.4. Compression
There is compression.
There is no compression.
Have a Yamaha dealer check the vehicle.The engine does not start.
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.
Check the compression.
The engine does not start.
Check the ignition.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
DryWet
Operate the electric starter
or the kickstarter.
U51DE1E0.book Page 38 Thursday, August 29, 2013 4:41 PM

MOTORCYCLE CARE AND STORAGE
7-1
7
EAU37834
Matte color cautionNOTICE
ECA15193
Some models are equipped with
matte colore d finishe d parts. Be
sure to consult a Yamaha d ealer for
a d vice on what prod ucts to use be-
fore cleanin g the vehicle. Usin g a
b rush, harsh chemical prod ucts or
cleanin g compoun ds when cleanin g
these parts will scratch or damag e
their surface. Wax also shoul d not
b e applied to any matte colore d fin-
ishe d parts.
EAU57020
CareWhile the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a mo-
torcycle. Frequent and proper care
does not only comply with the terms of
the warranty, but it will also keep your
motorcycle looking good, extend its
life and optimize its performance.
Before cleanin g
1. Cover the muffler outlet with a plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov- ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt, like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod- ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and
degreaser off with water.
Cleanin g
NOTICE
ECA10773
Avoi d usin g stron g aci dic wheel
cleaners, especially on spoke d
wheels. If such pro ducts are
use d on har d-to-remove dirt, do
not leave the cleaner on the af-
fected area any lon ger than in-
structe d. Also, thorou ghly rinse
the area off with water, imme di-
ately dry it, an d then apply a cor-
rosion protection spray.
 Improper cleanin g can d amage
plastic parts (such as cowlin gs,
panels, win dshiel ds, hea dlig ht
lenses, meter lenses, etc.) an d
the mufflers. Use only a soft,
clean cloth or spon ge with wa-
ter to clean plastic. However, if
the plastic parts cannot b e thor-
ou ghly cleaned with water, di-
lute d mil d d eter gent with water
may be used . Be sure to rinse
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