2014 YAMAHA YBR125 clutch

OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU45311
TIPThis model is equipped with a lean an-
gle sensor to stop the engine in case of
a turnover. To start the engine after a
turnover, be sure to turn the main
switch to “OFF” and then to “ON”. Fail-
ing to do so will prevent the engine
from starting even though the engine
will crank when pushing the start
switch.
EAU43187
Startin g the en gineIn order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
 The transmission is in the neutral
position.
 The transmission is in gear with
the clutch lever pulled and the
sidestand up.
See page 3-11 for more informa-
tion.
1. Turn the key to “ON”. The engine trouble warning light
should come on for a few sec-
onds, then go off.NOTICE
ECA16712
If the warnin g li ght does not come
on initially when the key is turne d to
“ON”, or if the warnin g li ght remains
on, see pa ge 3-2 for the warnin g
li g ht circuit check.2. Shift the transmission into the
neutral position. The neutral indi-
cator light should come on. If not,
ask a Yamaha dealer to check the
electrical circuit.
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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
6-4
6
EAU1771A
General maintenance and lu brication chartNO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
(14000 mi)
1 Air filter element • Clean.
√√
•Replace. √√
2Clutch • Check operation.
•Adjust. √√√√√
3 *Front brake • Check operation, fluid level and
vehicle for fluid leakage. √√√√√√
• Replace brake pads. Whenever worn to the limit
4 *Rear brake • Check operation and adjust brake
pedal free play. √√√√√√
• Replace brake shoes. Whenever worn to the limit
5 *Brake hose • Check for cracks or damage.
• Check for correct routing and
clamping. √√√√√
• Replace. Every 4 years
6 *Brake flui d • Replace. Every 2 years
7 *Wheels • Check runout and for damage. √√√√
8 *Tires • Check tread depth and for dam-
age.
• Replace if necessary.
• Check air pressure.
• Correct if necessary. √√√√√
9 *Wheel bearin gs • Check bearing for looseness or
damage. √√√√
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-5
6
10*Swin
garm pivot
b ushes • Check bush assemblies for
looseness. √√√√
• Lubricate with lithium-soap- based grease. Every 10000 km (6000 mi)
11 Drive chain • Check chain slack, alignment and
condition.
• Adjust and lubricate chain with a special O-ring chain lubricant
thoroughly. Every 1000 km (600 mi) and after washing the motorcycle, riding in the rain or
riding in wet areas
12 *Steerin g b earin gs • Check bearing play and steering
for roughness. √√√√√
• Lubricate with lithium-soap- based grease. Every 24000 km (14000 mi)
13 *Chassis fasteners • Make sure that all nuts, bolts and
screws are properly tightened. √√√√√
14 Brake lever pivot
shaft • Lubricate with silicone grease.
√√√√√
15 Brake ped
al pivot
shaft • Lubricate with lithium-soap-
based grease. √√√√√
16 Clutch lever pivot
shaft • Lubricate with lithium-soap-
based grease. √√√√√
17 Si
destan d, center-
stan d • Check operation.
• Lubricate with lithium-soap-
based grease. √√√√√
18 *Sidestan d switch • Check operation. √√√√√√
19 *Front fork • Check operation and for oil leak-
age. √√√√
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
(14000 mi)U51DE1E0.book Page 5 Thursday, August 29, 2013 4:41 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
64. Install the engine oil drain bolt and
its new gasket, and then tighten
the bolt to the specified torque.
5. Refill with the specified amount of the recommended engine oil, and
then install and tighten the oil filler
cap.
NOTICE
ECA11621
In or der to prevent clutch slip-
pa ge (since the en gine oil also
lu bricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a hi gh-
er quality than specifie d. In
a ddition, do not use oils la beled
“ENERGY CONSERVING II” or
hi gher.
 Make sure that no forei gn mate-
rial enters the crankcase.6. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
7. Turn the engine off, wait a few mi- nutes until the oil settles, and then
check the oil level and correct it if
necessary.
EAU37124
Cleanin g the air filter elementThe air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean or, if necessary, replace the air
filter element more frequently if you are
riding in unusually wet or dusty areas.
1. Remove panel A. (See page 6-7.)
2. Remove the air filter case cover by removing the screws.
3. Remove the air filter element.
1. Engine oil drain bolt
2. Gasket
3. Oil panTi ghtenin g torque:
Engine oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended engine oil: See page 8-1.
Oil change quantity: 1.00 L (1.06 US qt, 0.88 Imp.qt)3
2
1
1. Screw
2. Air filter case cover
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6
EAU21963
Cast wheelsTo maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels. The wheel rims should be
checked for cracks, bends, warp-
age or other damage before each
ride. If any damage is found, have
a Yamaha dealer replace the
wheel. Do not attempt even the
smallest repair to the wheel. A de-
formed or cracked wheel must be
replaced.
 The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
EAUP0131
Adjustin g the clutch lever free
playThe clutch lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the clutch
lever free play and, if necessary, adjust
it as follows.
1. Slide the rubber cover back at the clutch lever.
2. Loosen the locknut.
3. To increase the clutch lever free play, turn the clutch lever free play
adjusting bolt in direction (a). To decrease the clutch lever free
play, turn the adjusting bolt in di-
rection (b).
TIPIf the specified clutch lever free play
could be obtained as described above,
skip steps 4–7.4. Fully turn the adjusting bolt at the
clutch lever in direction (a) to loos-
en the clutch cable.
5. Loosen the clutch cable locknut, located towards the center of the
cable.
6. To increase the clutch lever free play, turn the clutch lever free play
adjusting nut in direction (a). To
1. Rubber cover
2. Locknut
3. Clutch lever free play adjusting bolt
4. Clutch lever free play4 123
1. Locknut
2. Clutch lever free play adjusting nut
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
6decrease the clutch lever free
play, turn the adjusting nut in di-
rection (b).
7. Tighten the locknut at the clutch cable.
8. Tighten the locknut at the clutch lever, and then slide the rubber
cover to its original position.
EAU37914
Checkin g the brake lever free
playThere should be no free play at the
brake lever end. If there is free play,
have a Yamaha dealer inspect the
brake system.
WARNING
EWA14212
A soft or spon gy feelin g in the b rake
lever can in dicate the presence of
air in the hy draulic system. If there is
air in the hy draulic system, have a
Yamaha dealer blee d the system be-
fore operatin g the vehicle. Air in the
hy draulic system will diminish the b
rakin g performance, which may re-
sult in loss of control an d an acci-
d ent.1. No brake lever free play
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6
EAU23098
Checking an d lu bricatin g the
ca blesThe operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubri-
cated if necessary. If a cable is
damaged or does not move smoothly,
have a Yamaha dealer check or re-
place it. WARNING! Dama ge to the
outer housin g of cab les may result
in internal rustin g an d cause inter-
ference with ca ble movement. Re-
place damag ed cab les as soon as
possi ble to prevent unsafe con di-
tions.
[EWA10712] EAU49921
Checkin
g an d lu bricatin g the
throttle grip an d ca bleThe operation of the throttle grip
should be checked before each ride. In
addition, the cable should be lubricat-
ed by a Yamaha dealer at the intervals
specified in the periodic maintenance
chart.
EAU23144
Checkin g an d lu bricatin g the
b rake an d clutch leversThe operation of the brake and clutch
levers should be checked before each
ride, and the lever pivots should be lu-
bricated if necessary.
Brake lever
Clutch lever
Recommen ded lu bricant:
Yamaha cable lubricant or other
suitable cable lubricant
U51DE1E0.book Page 24 Thursday, August 29, 2013 4:41 PM