2006 YAMAHA YBR125 tire pressure

PRE-OPERATION CHECKS
4-1
4
EAU15591
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss
of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual inspec-
tion, to check the following points before each ride.NOTE:Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very shorttime; and the added safety it assures is more than worth the time involved.
WARNING
EWA11150
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operatingthe vehicle.U3D9E0E0.book Page 1 Saturday, December 25, 2004 11:35 AM

PRE-OPERATION CHECKS
4-3
4
Wheels and tiresCheck for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-14, 6-16
Brake and shift pedalsMake sure that operation is smooth.
Lubricate pedal pivoting points if necessary.6-24
Brake and clutch leversMake sure that operation is smooth.
Lubricate lever pivoting points if necessary.6-25
CenterstandMake sure that operation is smooth.
Lubricate pivot if necessary.6-26
Chassis fastenersMake sure that all nuts, bolts and screws are properly tightened.
Tighten if necessary.—
Instruments, lights, signals
and switchesCheck operation.
Correct if necessary.— ITEM CHECKS PAGE
U3D9E0E0.book Page 3 Saturday, December 25, 2004 11:35 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
9*Rear brakeCheck operation and adjust brake pedal free play.√√√√√ √
Replace brake shoes. Whenever worn to the limit
10*Brake hoseCheck for cracks or damage.√√√√ √
Replace. Every 4 years
11*WheelsCheck runout and for damage.√√√√
12*TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.√√√√ √
13*Wheel bearingsCheck bearing for looseness or damage.√√√√
14*SwingarmCheck operation and for excessive play.√√√√
Lubricate with lithium-soap-based grease. Every 24000 km
15 Drive chainCheck chain slack, alignment and condition.
Adjust and lubricate chain with a special O-ring chain lu-
bricant thoroughly.Every 1000 km and after washing the motorcycle or
riding in the rain
16*Steering bearingsCheck bearing play and steering for roughness.√√√√√
Lubricate with lithium-soap-based grease. Every 24000 km
17*Chassis fastenersMake sure that all nuts, bolts and screws are properly
tightened.√√√√ √
18 CenterstandCheck operation.
Lubricate.√√√√ √
19*Front forkCheck operation and for oil leakage.√√√√
20*Shock absorber assem-
bliesCheck operation and shock absorbers for oil leakage.√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1000 km)
ANNUAL
CHECK
1 6 12 18 24
U3D9E0E0.book Page 3 Saturday, December 25, 2004 11:35 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
62. To increase the throttle cable free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
cable free play, turn the adjusting
nut in direction (b).
3. Tighten the locknut.
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU21540
Tires To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10500


The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).


The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approvedfor this model.
U3D9E0E0.book Page 14 Saturday, December 25, 2004 11:35 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6
WARNING
EWA11020
Because loading has an enormous
impact on the handling, braking,
performance and safety characteris-
tics of your motorcycle, you should
keep the following precautions in
mind.

NEVER OVERLOAD THE
MOTORCYCLE! Operation of an
overloaded motorcycle may re-
sult in tire damage, loss of con-
trol, or severe injury. Make sure
that the total weight of rider,passenger, cargo, and accesso-
ries does not exceed the speci-
fied maximum load for the
vehicle.


Do not carry along loosely
packed items, which can shift
during a ride.


Securely pack the heaviest
items close to the center of the
motorcycle and distribute the
weight evenly on both sides.


Adjust the suspension and tire
air pressure with regard to the
load.


Check the tire condition and airpressure before each ride.Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
NOTE:The tire tread depth limits may differ
from country to country. Always complywith the local regulations.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Front:
175 kPa (25 psi) (1.75 kgf/cm²)
Rear:
200 kPa (29 psi) (2.00 kgf/cm²)
90–200 kg (198–441 lb):
Front:
175 kPa (25 psi) (1.75 kgf/cm²)
Rear:
280 kPa (41 psi) (2.80 kgf/cm²)
Maximum load*:
200 kg (441 lb)
* Total weight of rider, passenger, car-
go and accessories
1. Tire sidewall
2. Tire tread depth
Minimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
chapter6 Page 15 Friday, January 7, 2005 4:04 PM

MOTORCYCLE CARE AND STORAGE
7-4
7
WARNING
EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turningthe engine over.
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
7. 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.
8. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
9. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively 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.
NOTE:Make any necessary repairs beforestoring the motorcycle.
U3D9E0E0.book Page 4 Saturday, December 25, 2004 11:35 AM

SPECIFICATIONS
8-2
8
Chassis:Frame type:
Diamond
Caster angle:
26.33 °
Trail:
90.0 mm (3.54 in)Front tire:Type:
With tube
Size:
2.75-18 42P
Manufacturer/model:
CHENG SHIN/SAKURA S-901
Manufacturer/model:
PIRELLI/CITY DEMONRear tire:Type:
With tube
Size:
90/90-18 57P
Manufacturer/model:
CHENG SHIN/SAKURA S-180
Manufacturer/model:
PIRELLI/CITY DEMONLoading:Maximum load:
200 kg (441 lb)
(Total weight of rider, passenger, cargo and
accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–90 kg (0–198 lb)Front:
175 kPa (25 psi) (1.75 kgf/cm²)
Rear:
200 kPa (29 psi) (2.00 kgf/cm²)
Loading condition:
90–200 kg (198–441 lb)
Front:
175 kPa (25 psi) (1.75 kgf/cm²)
Rear:
280 kPa (41 psi) (2.80 kgf/cm²)
Front wheel:Wheel type:
Cast wheel
Rim size:
J18x1.60Rear wheel:Wheel type:
Cast wheel
Rim size:
J18x1.85Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 3 or 4Rear brake:Type:
Drum brake
Operation:
Right foot operation
Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
110.0 mm (4.33 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:
DC. CDI
Charging system:
AC magnetoBattery:Model:
CB5L-B
Voltage, capacity:
12 V, 5.0 AhHeadlight:Bulb type:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 35 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
chapter8 Page 2 Friday, January 7, 2005 4:05 PM