2000 YAMAHA TW125 engine

EAU00009
TABLE OF CONTENTS
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GIVE SAFETY THE RIGHT OF WAY ..................1-1
DESCRIPTION .....................................................2-1
Left view............................................................2-1
Right view .........................................................2-2
Controls/Instruments .......................................2-3
INSTRUMENT AND CONTROL
FUNCTIONS ........................................................3-1
Main switch ......................................................3-1
Indicator lights..................................................3-1
Speedometer ....................................................3-2
Handlebar switches..........................................3-2
Clutch lever .......................................................3-4
Shift pedal.........................................................3-4
Front brake lever ..............................................3-4
Rear brake pedal ..............................................3-5
Fuel tank cap.....................................................3-5
Fuel ....................................................................3-6
Fuel cock ...........................................................3-7
Starter (choke) “1” .........................................3-8
Steering lock .....................................................3-8
Seat ...................................................................3-9
Helmet holder ...................................................3-9
Rear shock absorber ......................................3-10
Rear carrier .....................................................3-10
Luggage strap holders ...................................3-10Sidestand ........................................................3-11
Sidestand/clutch switch operation check .....3-12
PRE-OPERATION CHECKS.................................4-1
Pre-operation check list ...................................4-1
OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting the engine ..........................................5-1
Starting a warm engine ...................................5-4
Shifting..............................................................5-4
Tips for reducing fuel consumption ...............5-5
Engine break-in ................................................5-5
Parking ..............................................................5-6
PERIODIC MAINTENANCE AND MINOR
REPAIR ................................................................6-1
Tool kit ..............................................................6-1
Periodic maintenance and lubrication............6-3
Cowling and panel removal and
installation ........................................................6-6
Panel A ..............................................................6-6
Panel B ..............................................................6-7
Cowling C..........................................................6-8
Spark plug.........................................................6-8
Engine oil ..........................................................6-9
Air filter ...........................................................6-121
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2-2
DESCRIPTION
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8. Rear carrier (page 3-10)
9. Battery (page 6-30)
10. Fuse (page 6-31)11. Tool kit (page 6-1)
12. Rear brake pedal (page 3-5, 6-20)
13. Engine oil level check window (page 6-9)
89
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1112 13Right view
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3-1
EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
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EAU00028Main switch
The main switch controls the igni-
tion and lighting systems. Its oper-
ation is described below.
EAU00036ON
Electrical circuits are switched on.
The engine can be started. The key
cannot be removed in this position.
EAU00038OFF
All electrical circuits are switched
off. The key can be removed in this
position.
EAU00056Indicator lights
EAU00057Turn indicator light “5”
This indicator flashes when the
turn switch is moved to the left or
right.
EAU00063High beam indicator light “&”
This indicator comes on when the
headlight high beam is used.
1. Turn indicator light “5”
2. High beam indicator light “&”
3. Neutral indicator light “N”
EAU00061Neutral indicator light “N”
This indicator comes on when the
transmission is in neutral.
OFFON
312
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3-3
INSTRUMENT AND CONTROL FUNCTIONS
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EAU00127Turn signal switch
To signal a right-hand turn, push
the switch to “6”. To signal a left-
hand turn, push the switch to
“4”. Once the switch is released
it will return to the center position.
To cancel the signal, push the
switch in after it has returned to
the center position.
EAU00129
Horn switch “*”
Press the switch to sound the horn.
EAU00134Lights switch
Turning the light switch to “
'”,
turns on the auxiliary light, meter
lights and taillight. Turning the
light switch to “:” turns the head-
light on also.
EAU00143Start switch “,“
The starter motor cranks the
engine when pushing the start
switch.
EC000005
cC
See starting instructions prior to
starting the engine.
1
2
EAU00138Engine stop switch
The engine stop switch is a safety
device for use in an emergency
such as when the motorcycle over-
turns or if trouble occurs in the
throttle system. Turn the switch to
“#” to start the engine.
In case of emergency, turn the
switch to “$” to stop the engine.
1. Engine stop switch
2. Start switch “,”
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3-4
INSTRUMENT AND CONTROL FUNCTIONS
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EAU00157Shift pedal
This motorcycle is equipped with a
constant-mesh 5-speed transmis-
sion.
The shift pedal is located on the
left side of the engine and is used
in combination with the clutch
when shifting.
1. Shift pedal
N. Neutral
EAU00152Clutch lever
The clutch lever is located on the
left handlebar, and the ignition cir-
cuit cut-off system is incorporated
in the clutch lever holder. Pull the
clutch lever to the handlebar to dis-
engage the clutch, and release the
lever to engage the clutch. The
lever should be pulled rapidly and
released slowly for smooth clutch
operation. (Refer to the engine
starting procedures for a descrip-
tion of the ignition circuit cut-off
system.)
1. Clutch lever
EAU00158Front brake lever
The front brake lever is located on
the right handlebar. Pull it toward
the handlebar to apply the front
brake.
1. Front brake lever
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N5
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INSTRUMENT AND CONTROL FUNCTIONS
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EAU01183
Fuel
Make sure there is sufficient fuel in
the tank. Fill the fuel tank to the
bottom of the filler tube as shown
in the illustration.
EW000130
w
Do not overfill the fuel tank. Avoid
spilling fuel on the hot engine. Do
not fill the fuel tank above the bot-
tom of the filler tube or it may
overflow when the fuel heats up
later and expands.
1. Filler tube
2. Fuel level
EAU00185
cC
Always wipe off spilled fuel imme-
diately with a dry and clean soft
cloth. Fuel may deteriorate painted
surfaces or plastic parts.
EAU00191
NOTE:
If knocking or pinging occurs, use a
different brand of gasoline or high-
er octane grade.
Recommended fuel:
Regular unleaded gasoline
with a research octane
number of 91 or higher.
Fuel tank capacity:
Total:
7.0 L
Reserve:
1.0 L
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3-7
INSTRUMENT AND CONTROL FUNCTIONS
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EAU01121Fuel cock
The fuel cock supplies fuel from
the tank to the carburetor while fil-
tering 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.
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.
1. Arrow mark positioned over “ON”
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 fuel cock back to “ON” after
refueling!
1. Arrow mark positioned over “RES”
RES
ONFUEL
OFF
1
Off position
OFF
ONFUEL RES
1
RES
Reserve position
ONFUEL
RES
OFF
1ON
Normal position
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3-8
INSTRUMENT AND CONTROL FUNCTIONS
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EAU02976Starter (choke) “1”
Starting a cold engine requires a
richer air-fuel mixture. A separate
starter circuit supplies this mixture.
Move in direction ato turn on the
starter (choke).
Move in direction bto turn off the
starter (choke).
1. Starter (choke) “1”
EAU02934Steering lock
To lock the steering
Turn the handlebars all the way to
the right and open the steering
lock cover.
Insert the key and turn it 1/8 turn
counterclockwise. Then, push the
key in while turning the handlebars
slightly to the left and turn the key
1/8 turn clockwise.
Check that the steering is locked,
remove the key and close the lock
cover.
1. Steering lock
2. Cover
To unlock the steering
Insert the key, push it in and turn it
1/8 turn counterclockwise so that it
moves out. Then, release and
remove the key.
a
b
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