2004 YAMAHA TW125 tires
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TABLE OF CONTENTS
SAFETY 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 ............................... 3-1
Indicator lights ........................... 3-1
Speedometer unit ...................... 3-2
Handlebar switches ................... 3-3
Clutch lever ............................... 3-4
Shift pedal ................................. 3-4
Brake lever ................................ 3-4
Brake pedal ............................... 3-5
Fuel tank cap ............................. 3-5
Fuel ........................................... 3-6
Fuel cock ................................... 3-7
Starter (choke) knob “ ” .......... 3-8
Steering lock ............................. 3-8
Seat ........................................... 3-9
Helmet holder ............................ 3-9
Shock absorber ....................... 3-10
Carrier ..................................... 3-10
Luggage strap holders ............ 3-10
Sidestand ................................ 3-11Ignition circuit cut-off system ... 3-11
PRE-OPERATION CHECKS ........ 4-1
Pre-operation check list ............ 4-2
OPERATION AND IMPORTANT
RIDING POINTS ........................... 5-1
Starting a cold engine ............... 5-1
Starting a warm engine ............. 5-2
Shifting ...................................... 5-2
Tips for reducing fuel
consumption ............................ 5-3
Engine break-in ......................... 5-4
Parking ...................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR ............................ 6-1
Owner’s tool kit ......................... 6-1
Periodic maintenance and
lubrication chart ....................... 6-2
Removing and installing
panels ..................................... 6-5
Checking the spark plug ........... 6-6
Engine oil and oil filter
element ................................... 6-7
Cleaning the air filter element
and check hose ..................... 6-10
Adjusting the carburetor .......... 6-12Adjusting the engine idling
speed .................................... 6-12
Adjusting the throttle cable free
play ....................................... 6-13
Adjusting the valve
clearance .............................. 6-13
Tires ........................................ 6-13
Spoke wheels .......................... 6-16
Adjusting the clutch lever free
play ....................................... 6-16
Adjusting the brake lever free
play ....................................... 6-17
Adjusting the brake pedal
position and free play ............ 6-18
Adjusting the rear brake light
switch .................................... 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
Lubricating the drive chain ...... 6-23
Checking and lubricating the
cables .................................... 6-23
Checking and lubricating the
throttle grip and cable ........... 6-24
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Page 28 of 80
PRE-OPERATION CHECKS
4-3
2
3
45
6
7
8
9
Drive chain
Check chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary.6-21, 6-23
Wheels and tires
Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-13, 6-16
Brake and shift pedals
Make sure that operation is smooth.
Lubricate pedal pivoting points if necessary.6-24
Brake and clutch levers
Make sure that operation is smooth.
Lubricate lever pivoting points if necessary.6-24
Sidestand
Make sure that operation is smooth.
Lubricate pivot if necessary.6-25
Chassis fasteners
Make sure that all nuts, bolts and screws are properly tightened.
Tighten if necessary.—
Instruments, lights, signals
and switches
Check operation.
Correct if necessary.—
Sidestand switch
Check operation of ignition circuit cut-off system.
If system is defective, have Yamaha dealer check vehicle.3-11
ITEM CHECKS PAGE
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Page 35 of 80
PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
1
2
3
4
5
6
7
8
9
10
*
Tires
Check tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.
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√
√
√
11
*
Wheel bearings
Check bearing for looseness or damage.
√
√
√
√
12
*
Swingarm
Check operation and for excessive play.
√
√
√
√
Lubricate with lithium-soap-based grease. Every 24000 km
13
Drive chain
Check chain slack.
Make sure that the rear wheel is properly aligned.
Clean and lubricate.Every 500 km and after washing the motorcycle or
riding in the rain
14
*
Steering bearings
Check bearing play and steering for roughness.
√
√
√
√
√
Lubricate with lithium-soap-based grease. Every 24000 km
15
*
Chassis fasteners
Make sure that all nuts, bolts and screws are properly
tightened.
√
√
√
√
√
16
Sidestand
Check operation.
Lubricate.
√
√
√
√
√
17
*
Sidestand switch
Check operation.
√
√
√
√
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18
*
Front fork
Check operation and for oil leakage.
√
√
√
√
19
*
Shock absorber assem-
bly
Check operation and shock absorber for oil leakage.
√
√
√
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20
*
Rear suspension relay
arm and connecting arm
pivoting points
Check operation.
√
√
√
√
Lubricate with lithium-soap-based grease.
√
√
21
*
Carburetor
Check starter (choke) operation.
Adjust engine idling speed.
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√
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√
√
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22
Engine oil
Change.
Check oil level and vehicle for oil leakage.
√
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23
Engine oil filter element
Clean.
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√
√
24
*
Engine oil strainer
Clean.
√
NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (
×× × ×
1000 km)
ANNUAL
CHECK
1 6 12 18 24
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Page 45 of 80
PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
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EAU21380
Adjusting the throttle cable
free play
The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21400
Adjusting the 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.
EAU21581
Tires
To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, 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 approved
for this model.
1. Throttle cable free play
1
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Page 46 of 80
PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
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67
8
9
WARNING
EWA11200
Because loading has an enormous
impact on the handling, braking,
performance and safety characteris-
tics of your vehicle, you should keep
the following precautions in mind.
NEVER OVERLOAD THE VEHI-
CLE! Operation of an overload-
ed vehicle may result in tiredamage, loss of control, or se-
vere injury. Make sure that the
total weight of rider, passenger,
cargo, and accessories does
not exceed the specified maxi-
mum 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
vehicle and distribute the
weight evenly on both sides.
Adjust the tire air pressure with
regard to the load.
Check the tire condition and air
pressure 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 comply
with the local regulations.
Tire air pressure (measured on
cold tires):
0–90 kg (0–198 lb) :
Front:
150 kPa (22 psi) (1.50 kgf/cm
2
)
Rear:
150 kPa (22 psi) (1.50 kgf/cm
2
)
90–180 kg (198–397 lb) :
Front:
150 kPa (22 psi) (1.50 kgf/cm
2
)
Rear:
175 kPa (25 psi) (1.75 kgf/cm
2
)
Maximum load*:
180 kg (397 lb)
* Total weight of rider, passenger,
cargo and accessories
1. Tire tread depth
2. Tire sidewall
Minimum tire tread depth (front
and rear):
1.6 mm (0.06 in)
21
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Page 47 of 80
PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
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8
9Tire information
This motorcycle is equipped with tube
tires.
WARNING
EWA10460
The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the vehicle
cannot be guaranteed.
After extensive tests, only the
tires listed below have been ap-
proved for this model by
Yamaha Motor Co., Ltd.
WARNING
EWA10570
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the mo-
torcycle with excessively worn
tires decreases riding stability
and can lead to loss of control.
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
It is not recommended to patch
a punctured tube. If unavoid-able, however, patch the tube
very carefully and replace it as
soon as possible with a
high-quality product. Front tire:
Size:
130/80-18M/C 66P
Manufacturer/model:
BRIDGESTONE/TW-203
Rear tire:
Size:
180/80-14M/C 78P
Manufacturer/model:
BRIDGESTONE/TW-204
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Page 71 of 80
MOTORCYCLE CARE AND STORAGE
7-2
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9any marks. If the windshield is
scratched, use a quality plastic
polishing compound after
washing.
After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily if
the area is covered with a wet cloth for
a few minutes before cleaning.
After riding in the rain, near the sea oron salt-sprayed roadsSince sea salt or salt sprayed on roads
during winter are extremely corrosive in
combination with water, carry out the
following steps after each ride in the
rain, near the sea or on salt-sprayed
roads.NOTE:
Salt sprayed on roads in the winter may
remain well into spring.
1. Clean the motorcycle with cold wa-ter and a mild detergent, after the
engine has cooled down.
CAUTION:
ECA10790
Do not use warm water since it in-
creases the corrosive action of the
salt.
2. Apply a corrosion protection spray
on all metal, including chrome- and
nickel-plated, surfaces to prevent
corrosion.
After cleaning
1. Dry the motorcycle with a chamois
or an absorbing cloth.
2. Immediately dry the drive chain
and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine
chrome, aluminum and stain-
less-steel parts, including the ex-
haust system. (Even the thermally
induced discoloring of stain-
less-steel exhaust systems can be
removed through polishing.)
4. To prevent corrosion, it is recom-
mended to apply a corrosion pro-tection spray on all metal,
including chrome- and nickel-plat-
ed, surfaces.
5. Use spray oil as a universal clean-
er to remove any remaining dirt.
6. Touch up minor paint damage
caused by stones, etc.
7. Wax all painted surfaces.
8. Let the motorcycle dry completely
before storing or covering it.
WARNING
EWA10930
Make sure that there is no oil or
wax on the brakes or tires. If
necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or ac-
etone, and wash the tires with
warm water and a mild deter-
gent.
Before operating the motorcy-
cle test its braking performance
and cornering behavior.
CAUTION:
ECA10800
Apply spray oil and wax spar-
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Page 73 of 80
MOTORCYCLE CARE AND STORAGE
7-4
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from the spark plug, and then
install the spark plug and the
spark plug cap.
WARNING
EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the sidestand/
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, dryplace 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
6-27.
NOTE:
Make any necessary repairs before
storing the motorcycle.
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