fuel YAMAHA TW125 2003 Owners Manual

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TABLE OF CONTENTS
GIVE SAFETY THE RIGHT OF WAY ................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 ......................................................3-5
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 ................................................3-10
Shock absorber .............................................3-10
Carrier ...........................................................3-10
Luggage strap holders ..................................3-11
Sidestand ......................................................3-11Ignition circuit cut-off system .........................3-12
PRE-OPERATION CHECKS .............................4-1
Pre-operation check list ...................................4-1
OPERATION AND IMPORTANT RIDING
POINTS ..............................................................5-1
Starting a cold engine .....................................5-1
Starting a warm engine ...................................5-2
Shifting ............................................................5-3
Recommended shift points
(for Switzerland only) ....................................5-3
Tips for reducing fuel consumption .................5-4
Engine break-in ...............................................5-4
Parking ............................................................5-5
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 ..................................6-7
Engine oil and oil filter element .......................6-9
Cleaning the air filter element and check
hose ...........................................................6-12
Adjusting the carburetor ................................6-14
Adjusting the engine idling speed .................6-141
2
3
4
5
6
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2-1
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DESCRIPTIONPart locations
2
1. Headlight (page 6-34)
2. Steering lock (page 3-8)
3. Fuel tank (page 3-5)
4. Fuel cock (page 3-7)
5. Helmet holder (page 3-10)6. Luggage strap holders (page 3-11)
7. Drive chain adjusting plates (page 6-26)
8. Air filter element (page 6-12)
9. Shift pedal (page 3-4)
3
456
7
8 912Left view
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2-3
DESCRIPTION
2
1. Clutch lever (page 3-4, 6-19)
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 3-5, 6-20)
9. Throttle grip (page 6-15, 6-28)
10. Fuel tank cap (page 3-5)
1
23
45
678
9
10
Controls and instruments
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3-2
INSTRUMENT AND CONTROL FUNCTIONS
3
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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 enable you
to plan future fuel stops.
4
12
3
1. Speedometer
2. Odometer
3. Tripmeter
4. Reset knob
NOTE:
Only for the German model equipped
with a speed limiter:
The speed limiter prevents the motor-
cycle from exceeding a riding speed
of 80 km/h.
EAU00061
Neutral indicator light “N”
This indicator light comes on when
the transmission is in the neutral
position.
312
1. Turn signal indicator light “5”
2. High beam indicator light “&”
3. Neutral indicator light “N”
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3-5
INSTRUMENT AND CONTROL FUNCTIONS
3
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Brake lever
The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the han-
dlebar grip.
1
1. Brake lever
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Brake pedal
The brake pedal is on the right side
of the motorcycle. To apply the rear
brake, press down on the brake
pedal.
1
1. Brake pedal
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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.
1
a
1. Fuel tank cap
a. Unlock.
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3-6
To install the fuel tank cap
1. Insert the fuel tank cap into the
tank opening with the key insert-
ed 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 installed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly installed and
locked.
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Make sure that the fuel tank cap is
properly closed and locked before
riding.
INSTRUMENT AND CONTROL FUNCTIONS
3
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Fuel
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
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8Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
8Avoid spilling fuel on the hot
engine.
1
2
1. Filler tube
2. Fuel level
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cC
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted sur-
faces or plastic parts.
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Recommended fuel:
REGULAR UNLEADED
GASOLINE ONLY
Fuel tank capacity:
Total amount:
7.0 L
Reserve amount:
1.7 L
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3-7
INSTRUMENT AND CONTROL FUNCTIONS
3
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Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and pis-
ton rings, as well as to the exhaust
system.
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a research octane num-
ber of 91 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand or premium unleaded
fuel. Use of unleaded fuel will extend
spark plug life and reduce mainte-
nance costs.EAU03050
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
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.
RES
ONFUEL
OFF
1
1. Arrow mark positioned over “OFF”
ON
With the lever in this position, fuel
flows to the carburetor. Normal riding
is done with the lever in this position.
ONFUEL
RES
OFF
1ON
1. Arrow mark positioned over “ON”
OFF: Closed positionON: Normal position
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3-8
RES
This indicates reserve. If you run out
of fuel while riding, move the lever to
this position. Fill the tank at the first
opportunity. Be sure to set the lever
back to “ON” after refueling!
INSTRUMENT AND CONTROL FUNCTIONS
3
OFF
ONFUEL RES
1
RES
1. Arrow mark positioned over “RES”
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Starter (choke) knob“1”
Starting a cold engine requires a rich-
er air-fuel mixture, which is supplied
by the starter (choke).
Move the knob in direction ato turn
on the starter (choke).
Move the knob in direction bto turn
off the starter (choke).
a
b
1
1. Starter (choke) knob “1”
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Steering lock
To lock the steering
1. Turn the handlebar all the way to
the right.
2. Open the steering lock cover,
and then insert the steering lock
key.
3. Turn the key 1/8 turn counter-
clockwise, push it in while turning
the handlebar slightly to the left,
and then turn the key 1/8 turn
clockwise.
21
1. Steering lock cover
2. Steering lock
RES: Reserve position
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4-1
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PRE-OPERATION CHECKS
4The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpect-
edly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leak-
age or loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thor-
ough visual inspection, to check the following points before each ride.
EAU03439
Pre-operation check listPre-operation check list
ITEM CHECKS PAGE
Fuel•Check fuel level in fuel tank.
•Refuel if necessary.
•Check fuel line for leakage.3-5–3-7
Engine oil•Check oil level in engine.
•If necessary, add recommended oil to specified level.
•Check vehicle for oil leakage.6-9–6-12
Front brake•Check operation.
•If soft or spongy, have Yamaha dealer bleed hydraulic system.
•Check lever free play.
•Adjust if necessary.
•Check fluid level in reservoir.
•If necessary, add recommended brake fluid to specified level.
•Check hydraulic system for leakage.3-5, 6-20, 6-23–6-25
Rear brake•Check operation.
•Check pedal free play.
•Adjust if necessary.3-5, 6-21–6-23
Clutch•Check operation.
•Lubricate cable if necessary.
•Check lever free play.
•Adjust if necessary.3-4, 6-19–6-20
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5-1
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OPERATION AND IMPORTANT RIDING POINTS
5
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8Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thorough-
ly understand.
8Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
8Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
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Starting a cold engine
In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
8The transmission is in the neutral
position.
8The transmission is in gear with
the clutch lever pulled and the
sidestand up.
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8Before starting the engine,
check the function of the igni-
tion circuit cut-off system
according to the procedure
described on page 3-13.
8Never ride with the sidestand
down.
1. Turn the fuel cock lever to “ON”.
2. Turn the key to “ON” and make
sure that the engine stop switch
is set to “#”.
3. Shift the transmission into the
neutral position.
NOTE:
When the transmission is in the neu-
tral position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical
circuit.
ONFUEL
RES
OFF
1ON
1. Arrow mark positioned over “ON”
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