2014 YAMAHA YBR125 oil type

PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6
EAU37175
Engine oilThe engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
To check the en gine oil level
1. Place the vehicle on the center- stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles, remove the engine oil filler
cap, wipe the engine oil dipstick
clean, insert it back into the oil fill-
er hole (without screwing it in), and
then remove it again to check the
oil level.
TIPThe engine oil should be between the
minimum and maximum level marks.
4. If the engine oil is at or below theminimum level mark, add suffi-
cient oil of the recommended type
to raise it to the correct level.
5. Insert the dipstick into the oil filler hole, and then tighten the oil filler
cap.
To chan ge the en gine oil
1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap, the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
1. Engine oil filler cap
1. Engine oil dipstick
2. Maximum level mark
3. Minimum level mark
U51DE1E0.book Page 10 Thursday, August 29, 2013 4:41 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6
indicator grooves have almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
EAU43171
Rear
brake shoes
The rear brake is provided with a wear
indicator, which allows you to check
the brake shoe wear without having to
disassemble the brake. To check the
brake shoe wear, check the position of
the wear indicator while applying the
brake. If a brake shoe has worn to the
point that the wear indicator reaches
the wear limit mark, have a Yamaha
dealer replace the brake shoes as a
set.
EAU37003
Checkin g the brake flui d levelBefore riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
WARNING
EWA15981
Improper maintenance can result in
loss of b raking a bility. O bserve
these precautions: 
Insufficient brake flui d may al-
low air to enter the b rake sys-
tem, re ducing brakin g
performance.
 Clean the filler cap before re-
moving . Use only DOT 3 or DOT
4 brake flui d from a sealed con-
tainer.
 Use only the specifie d b rake flu-
i d ; otherwise, the ru bber seals
may deteriorate, causin g leak-
a g e.
 Refill with the same type of
brake flui d. A dding a brake flui d
other than DOT 3 or DOT 4 may
result in a harmful chemical re-
action.
 Be careful that water d oes not
enter the brake flui d reservoir
when refillin g. Water will si gnifi-
cantly lower the boilin g point of
the flui d an d may result in vapor
lock.
NOTICE
ECA17641
Brake flui d may damag e painte d
surfaces or plastic parts. Always
clean up spille d flui d imme diately.
1. Brake shoe wear limit mark
2. Brake shoe wear indicator
1
2
1. Minimum level mark
Specified b rake flui d:
DOT 3 or DOT 4
1
U51DE1E0.book Page 20 Thursday, August 29, 2013 4:41 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
6
avoi
d causin g extensive dam-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
3. Turn the key to “ON” and turn on
the electrical circuits to check if
the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
EAU49112
Replacin g the hea dlig ht bul bThis model is equipped with a halogen
bulb headlight. If the headlight bulb
burns out, replace it as follows.NOTICE
ECA10651
Take care not to damag e the follow-
in g parts:
 Hea dlig ht bul b
Do not touch the glass part of
the hea dlig ht bul b to keep it free
from oil, otherwise the transpar-
ency of the g lass, the luminosity
of the b ulb, an d the b ulb life will
b e ad versely affected . Thor-
ou ghly clean off any d irt and fin-
g erprints on the hea dlig ht bul b
using a cloth moistene d with al-
cohol or thinner.
 Hea dlig ht lens
Do not affix any type of tinted
film or stickers to the head light
lens.
Do not use a hea dlig ht bul b of a
watta ge hi gher than specifie d.
1. Remove the headlight cowling to-
gether with the headlight unit by
removing the bolts and pulling for-
ward.
Specifie d fuse:
15.0 A
1. Do not touch the glass part of the bulb.
1. Bolt
1
1
U51DE1E0.book Page 30 Thursday, August 29, 2013 4:41 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:1985 mm (78.1 in)
Overall width:
745 mm (29.3 in)
Overall height: 1100 mm (43.3 in)
Seat height: 780 mm (30.7 in)
Wheelbase:
1290 mm (50.8 in)
Ground clearance: 160 mm (6.30 in)
Minimum turning radius: 2080 mm (81.9 in)Wei ght:Curb weight:
126 kg (278 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement: 124 cm³
Bore × stroke:
54.0 × 54.0 mm (2.13 × 2.13 in)
Compression ratio: 10.00 : 1
Starting system: Electric starter and kickstarter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade: API service SG type or higher, JASO
standard MA
Engine oil quantity:
Periodic oil change: 1.00 L (1.06 US qt, 0.88 Imp.qt)Air filter:Air filter element:Dry elementFuel:Recommended fuel:
Regular unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity:
13.0 L (3.43 US gal, 2.86 Imp.gal)
Fuel reserve amount: 3.4 L (0.90 US gal, 0.75 Imp.gal)
Fuel injection:Throttle body:ID mark: 51D1 00Spark plu g(s):Manufacturer/model:
NGK/CR6HSA
Spark plug gap: 0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction ratio:3.400 (68/20)
Final drive:
Chain
Secondary reduction ratio: 3.214 (45/14)
Transmission type: Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio: 1st:
2.643 (37/14)
2nd: 1.778 (32/18)
3rd: 1.316 (25/19)
4th:
1.045 (23/22)
5th: 0.875 (21/24)
–20 –10 0 1020 30 40 50 C
10 30 50 70 90 110
0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U51DE1E0.book Page 1 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