2004 YAMAHA TW125 fuel

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

✹✺✬✲✥ ✤ 



SAFETY INFORMATION
1-4
1
motorcycle’s electrical system an
electric failure could result, which
could cause a dangerous loss of
lights or engine power.
Gasoline and exhaust gas

GASOLINE IS HIGHLY FLAMMA-
BLE:

Always turn the engine off when
refueling.

Take care not to spill any gaso-
line on the engine or exhaust
system when refueling.

Never refuel while smoking or in
the vicinity of an open flame.

Never start the engine or let it run
for any length of time in a closed
area. The exhaust fumes are poi-
sonous and may cause loss of
consciousness and death within a
short time. Always operate your
motorcycle in an area that has ad-
equate ventilation.

Always turn the engine off before
leaving the motorcycle unattended
and remove the key from the main
switch. When parking the motorcy-cle, note the following:

The engine and exhaust system
may be hot, therefore, park the
motorcycle in a place where pe-
destrians or children are not like-
ly to touch these hot areas.

Do not park the motorcycle on a
slope or soft ground, otherwise it
may fall over.

Do not park the motorcycle near
a flammable source (e.g., a ker-
osene heater, or near an open
flame), otherwise it could catch
fire.

When transporting the motorcycle
in another vehicle, make sure that
it is kept upright and that the fuel
cock(s) are turned to “ON” or
“RES” (for vacuum type)/“OFF”
(for manual type). If the motorcycle
should lean over, gasoline may
leak out of the carburetor or fuel
tank.

If you should swallow any gaso-
line, inhale a lot of gasoline vapor,
or allow gasoline to get into youreyes, see your doctor immediate-
ly. If any gasoline spills on your
skin or clothing, immediately wash
the affected area with soap and
water and change your clothes.

✹✺✬✲✥ ✧ 



2-1
1
2
3
4
5
6
7
8
9

DESCRIPTION
EAU10410
Left view
3
456
7
8 9
1
2

1. Headlight (page 6-29)
2. Steering lock (page 3-8)
3. Fuel tank (page 3-5)
4. Fuel cock (page 3-7)
5. Helmet holder (page 3-9)
6. Luggage strap holder (page 3-10)
7. Drive chain slack adjusting plate
8. Air filter element (page 6-10)9. Shift pedal (page 3-4)

✹✺✬✲✥ ✤ 



DESCRIPTION
2-3
1
2
3
4
5
6
7
8
9

EAU10430
Controls and instruments
1
23
45
678
9
10

1. Clutch lever (page 3-4)
2. Left handlebar switches (page 3-3)
3. Speedometer unit (page 3-2)
4. Starter (choke) knob (page 3-8)
5. Main switch (page 3-1)
6. Indicator lights (page 3-1)
7. Right handlebar switches (page 3-3)
8. Brake lever (page 3-4)9. Throttle grip (page 6-13)
10. Fuel tank cap (page 3-5)

✹✺✬✲✥ ✦ 



INSTRUMENT AND CONTROL FUNCTIONS
3-2
1
2
3
4
5
6
7
8
9
on.

EAU11640
Speedometer unit
The speedometer unit is equipped with
a speedometer, an odometer and a
tripmeter. The speedometer shows
riding speed. The odometer shows the
total distance traveled. The tripmeter
shows the distance traveled since it
was last set to zero with the reset knob.
The tripmeter can be used to estimate
the distance that can be traveled with a
full tank of fuel. This information will en-
able you to plan future fuel stops.
NOTE:

Only for the German model equipped with
a speed limiter:
The speed limiter prevents the vehicle

from exceeding a riding speed of 80 km/h.

1. Speedometer
2. Odometer
3. Tripmeter
4. Reset knob
4
1
23

✹✺✬✲✥ ✥ 



INSTRUMENT AND CONTROL FUNCTIONS
3-5
2
34
5
6
7
8
9

EAU12941
Brake pedal
The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.
EAU32280
Fuel tank cap
To remove the fuel tank cap
1. Insert the key into the lock and turn
it 1/3 turn counterclockwise.
2. Turn the fuel tank cap 1/3 turn
counterclockwise and pull it off.
To install the fuel tank cap
1. Insert the fuel tank cap into the tank
opening with the key inserted in the
lock, and then turn the cap 1/3 turn
clockwise.

2. Turn the key 1/3 turn clockwise,
and then remove it.
NOTE:

The fuel tank cap cannot be installedunless the key is in the lock. In addition,
the key cannot be removed if the cap is
not properly installed and locked.
WARNING

EWA10120
Make sure that the fuel tank cap is
properly closed and locked before
riding.
1. Brake pedal
1

1. Fuel tank cap
2. Unlock.1 2

✹✺✬✲✥




INSTRUMENT AND CONTROL FUNCTIONS
3-6
1
2
3
4
5
6
7
8
9

EAU13210
Fuel
Make sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
WARNING

EWA10880

Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.

Avoid spilling fuel on the hot en-
gine.
CAUTION:

ECA10070
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, sincefuel may deteriorate painted surfac-
es or plastic parts.
EAU13320
CAUTION:

ECA11400
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different brandor premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs.
1. Fuel tank filler tube
2. Fuel level
1
2

Recommended fuel:
REGULAR UNLEADED GAS-
OLINE ONLY
Fuel tank capacity:
7.0 L (1.85 US gal)
(1.54 Imp.gal)
Fuel reserve amount:
1.7 L (0.45 US gal)
(0.37 Imp.gal)

✹✺✬✲✥ ✩ 



INSTRUMENT AND CONTROL FUNCTIONS
3-7
2
34
5
6
7
8
9

EAU13560
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has three positions:
OFF
With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.
ON
With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RES
This indicates reserve. If you run out of
fuel while riding, move the lever to this
position. Fill the tank at the first oppor-
tunity. Be sure to set the lever back to
“ON” after refueling!

1. Arrow mark positioned over “OFF”
RES
ONFUEL
OFF
1

1. Arrow mark positioned over “ON”
ON
FUEL
RES
OFF
1
ON

1. Arrow mark positioned over “RES”
OFF
ONFUEL RES
1
RES

✹✺✬✲✥ ✪