2014 YAMAHA YBR125 battery

TABLE OF CONTENTSSAFETY INFORMATION.................. 1-1
DESCRIPTION .................................. 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments ............... 2-3
INSTRUMENT AND CONTROL
FUNCTIONS ...................................... 3-1
Main switch/steering lock............... 3-1
Indicator lights and warning light ... 3-2
Speedometer unit ........................... 3-3
Tachometer .................................... 3-3
Self-diagnosis device ..................... 3-3
Fuel gauge ...................................... 3-4
Handlebar switches ........................ 3-4
Clutch lever .................................... 3-5
Shift pedal ...................................... 3-5
Brake lever...................................... 3-5
Brake pedal .................................... 3-6
Fuel tank cap .................................. 3-6
Fuel ................................................. 3-7
Catalytic converters........................ 3-8
Kickstarter ...................................... 3-9
Adjusting the shock absorber assemblies .................................. 3-9
Carrier ........................................... 3-10
Sidestand ..................................... 3-10
Ignition circuit cut-off system ....... 3-11 FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS ................................ 5-1
Starting the engine .......................... 5-1
Shifting ............................................ 5-2
Tips for reducing fuel consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT ................................... 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the emission control system .............. 6-3
General maintenance and lubrication chart ........................... 6-4
Removing and installing panels ...... 6-7
Checking the spark plug ................. 6-8
Engine oil....................................... 6-10
Cleaning the air filter element ....... 6-11
Checking the engine idling
speed ......................................... 6-13
Checking the throttle grip free
play ............................................ 6-13
Valve clearance ............................. 6-14
Tires .............................................. 6-14
Cast wheels................................... 6-16 Adjusting the clutch lever free
play ............................................ 6-16
Checking the brake lever free play ............................................ 6-17
Adjusting the brake pedal free
play ............................................ 6-18
Checking the shift pedal ............... 6-18
Brake light switches ..................... 6-19
Checking the front brake pads and rear brake shoes ............... 6-19
Checking the brake fluid level ...... 6-20
Changing the brake fluid .............. 6-21
Drive chain slack........................... 6-21
Cleaning and lubricating the drive
chain.......................................... 6-23
Checking and lubricating the cables ........................................ 6-24
Checking and lubricating the throttle grip and cable ............... 6-24
Checking and lubricating the
brake and clutch levers ............. 6-24
Checking and lubricating the brake pedal ............................... 6-25
Checking and lubricating the centerstand and sidestand........ 6-25
Lubricating the swingarm
pivots......................................... 6-26
Checking the front fork ................. 6-26
Checking the steering................... 6-27
Checking the wheel bearings ....... 6-27
Battery .......................................... 6-28U51DE1E0.book Page 1 Thursday, August 29, 2013 4:41 PM

DESCRIPTION
2-1
2
EAU10411
Left view
1
2,3,4
6
7
5
1. Headlight (page 6-30)
2. Fuse (page 6-29)
3. Battery (page 6-28)
4. Owner’s tool kit (page 6-2)
5. Shock absorber assembly spring preload adjusting ring (page 3-9)
6. Engine oil drain bolt (page 6-10)
7. Shift pedal (page 3-5)
U51DE1E0.book Page 1 Thursday, August 29, 2013 4:41 PM

OPERATION AND IMPORTANT RIDING POINTS
5-2
5
3. Start the engine by pushing the
start switch or by pushing the
kickstarter lever down.
If the engine fails to start when us-
ing the start switch, release it, wait
a few seconds, and then try again.
Each starting attempt should be
as short as possible to preserve
the battery. Do not crank the en-
gine more than 10 seconds on any
one attempt. If the engine does
not start with the starter motor, try
using the kickstarter.
NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!
EAU16672
Shiftin gShifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc.
The gear positions are shown in the il-
lustration.TIPTo shift the transmission into the neu-
tral position, press the shift pedal down
repeatedly until it reaches the end of its
travel, and then slightly raise it.
NOTICE
ECA10261
Even with the transmission in
the neutral position, d o not
coast for lon g period s of time
with the en gine off, an d d o not
tow the motorcycle for lon g d is-
tances. The transmission is
properly lu bricated only when
the en gine is runnin g. Ina de-
quate lu brication may d amage
the transmission.
 Always use the clutch while
chan gin g g ears to avoi d d am-
a g in g the en gine, transmission,
an d d rive train, which are not
d esi gne d to withstan d the
shock of force d shiftin g.
1. Shift pedal
2. Neutral position
U51DE1E0.book Page 2 Thursday, August 29, 2013 4:41 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-28
6
EAU23389
BatteryThe battery is located behind panel B.
(See page 6-7.)
This model is equipped with a VRLA
(Valve Regulated Lead Acid) battery.
There is no need to check the electro-
lyte or to add distilled water. However,
the battery lead connections need to
be checked and, if necessary, tight-
ened.
WARNING
EWA10761
Electrolyte is poisonous an d
d an gerous since it contains sul-
furic aci d, which causes severe b
urns. Avoi d any contact with
skin, eyes or clothin g an d al-
ways shiel d your eyes when
workin g near b atteries. In case
of contact, ad minister the fol-
lowin g FIRST AID.
EXTERNAL: Flush with plenty of water.
INTERNAL: Drink lar ge quan-
tities of water or milk an d im-
me diately call a physician.
EYES: Flush with water for 15 minutes an d seek prompt
me dical attention.
 Batteries pro duce explosive hy-
d ro gen gas. Therefore, keep
sparks, flames, ci garettes, etc.,
away from the b attery and pro-
vi de sufficient ventilation when
char gin g it in an enclose d
space.
 KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
NOTICE
ECA10621
Never attempt to remove the b attery
cell seals, as this woul d permanently
d amag e the b attery.To char ge the b attery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
battery tends to discharge more quick-
ly if the vehicle is equipped with op-
tional electrical accessories.NOTICE
ECA16522
To char ge a VRLA (Valve Re gulate d
Lea d Aci d) battery, a special (con-
stant-volta ge) battery char ger is re-
quire d. Usin g a conventional b attery
char ger will d amage the battery.To store the battery
1. If the vehicle will not be used for more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removin g the
b attery, be sure the key is
1. Battery
2. Negative battery lead (black)
3. Positive battery lead (red)1 23
U51DE1E0.book Page 28 Thursday, August 29, 2013 4:41 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-29
6turne
d to “OFF”, then discon-
nect the neg ative lead b efore
d isconnectin g the positive lea d.
[ECA16303]
2. If the battery will be stored for
more than two months, check it at
least once a month and fully char-
ge it if necessary.
3. Fully charge the battery before installation. NOTICE: When in-
stallin g the battery, be sure the
key is turned to “OFF”, then
connect the positive lea d b efore
connectin g the ne gative lead .
[ECA16841]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.NOTICE
ECA16531
Always keep the b attery charged .
Storin g a d ischar ged battery can
cause permanent battery dama ge.
EAU43214
Replacin g the fuseThe fuse is located behind panel B.
(See page 6-7.)
To access the fuse, disconnect the
starter relay coupler. The spare fuse is located on the rear of
the starter relay holder.
To access the spare fuse, remove the
starter relay (together with its holder)
by pulling it out, then turn the starter re-
lay over.
If the fuse is blown, replace it as fol-
lows.
1. Turn the key to “OFF” and turn off all electrical circuits.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to1. Starter relay coupler
1. Fuse
2. Starter relay holder
3. Starter relay
1
2 3
1. Spare fuse
2. Starter relay holder
3. Starter relay
1
2 3
U51DE1E0.book Page 29 Thursday, August 29, 2013 4:41 PM

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 STORAGE7-4
7
EAU43203
StorageShort-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the mo-
torcycle.NOTICE
ECA10811
 Storin g the motorcycle in a
poorly ventilate d room or cover-
in g it with a tarp, while it is still
wet, will allow water an d humi d-
ity to seep in an d cause rust.
 To prevent corrosion, avoi d
d amp cellars, sta bles ( because
of the presence of ammonia)
an d areas where stron g chemi-
cals are store d.Lon g-term
Before storing your motorcycle for sev-
eral months: 1. Follow all the instructions in the “Care” section of this chapter. 2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damag e or injury
from sparkin g, make sure to
g roun d the spark plu g elec-
tro des while turnin g the en-
g ine over.
[EWA10952]
4. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully char- ge it. Store it in a cool, dry place
and charge it once a month. Do
not store the battery in an exces-
sively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-28.TIPMake any necessary repairs before
storing the motorcycle.
U51DE1E0.book Page 4 Thursday, August 29, 2013 4:41 PM

SPECIFICATIONS
8-2
8
Chassis:Frame type:Diamond
Caster angle:
26.33 °
Trail: 92 mm (3.6 in)Front tire:Type:
Tubeless
Size: 2.75-18 42P
Manufacturer/model: CHENG SHIN/C-910Rear tire:Type:Tubeless
Size: 90/90-18 57P
Manufacturer/model:
CHENG SHIN/C-905Loa din g:Maximum load:
194 kg (428 lb)
(Total weight of rider, passenger, cargo
and accessories)Tire air pressure (measure d on col d
tires):Loading condition:
0–90 kg (0–198 lb)
Front:175 kPa (1.75 kgf/cm², 25 psi)
Rear: 200 kPa (2.00 kgf/cm², 29 psi) Loading condition:
90–194 kg (198–428 lb)
Front:175 kPa (1.75 kgf/cm², 25 psi)
Rear:
280 kPa (2.80 kgf/cm², 41 psi)
Front wheel:Wheel type:Cast wheel
Rim size:
J18M/C x MT1.85Rear wheel:Wheel type:Cast wheel
Rim size:
J18M/C x MT1.85Front brake:Type:
Single disc brake
Operation:
Right hand operation
Specified brake fluid: DOT 3 or 4Rear brake:Type:
Drum brake
Operation: Right foot operationFront suspension:Type:
Telescopic fork
Spring/shock absorber type: Coil spring/oil damper Wheel travel:
120.0 mm (4.72 in)
Rear suspension:Type:
Swingarm
Spring/shock absorber type: Coil spring/oil damper
Wheel travel: 105.0 mm (4.13 in)Electrical system:Ignition system:TCI
Charging system: AC magnetoBattery:Model:YTX7L-BS
Voltage, capacity: 12 V, 6.0 AhHea dlig ht:Bulb type:
Halogen bulbBul b volta ge, watta ge × quantity:Headlight:
12 V, 35.0 W/35.0 W × 1
Tail/brake light: 12 V, 5.0 W/21.0 W × 1
Front turn signal light: 12 V, 10.0 W × 2
Rear turn signal light:
12 V, 10.0 W × 2
Auxiliary light: 12 V, 5.0 W × 1
U51DE1E0.book Page 2 Thursday, August 29, 2013 4:41 PM