2006 YAMAHA DT125R warning

EAU10150
Particularly important information is distinguished in this manual by the following notations:
IMPORTANT MANUAL INFORMATION
CAUTION A CAUTION indicates special precautions that must be taken to avoid damage to
the motorcycle.
NOTE:A NOTE provides key information to make procedures easier or clearer.
NOTE:
This manual should be considered a permanent part of this motorcycle and should remain with it even if the
motorcycle is subsequently sold.
Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the
most current product information available at the time of printing, there may be minor discrepancies between your
motorcycle and this manual. If you have any questions concerning this manual, please consult your Yamaha dea-
ler.
EWA10030
s s
WARNING
PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS MOTORCYCLE.
s s
WARNINGFailure to follow WARNING instructions could result in severe injury or death to the
motorcycle operator, a bystander, or a person inspecting or repairing the motorcy-
cle.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!t
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SAFETY INFORMATION.....................1-1
DESCRIPTION.....................................2-1
Left view ...........................................2-1
Right view .........................................2-2
Controls and instruments .................2-3
INSTRUMENTS AND CONTROL
FUNCTIONS........................................3-1
Main switch/steering lock .................3-1
Indicator and warning lights .............3-2
Speedometer unit .............................3-3
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
Catalytic converter............................3-6
2-stroke engine oil ............................3-7
Fuel cock ..........................................3-7
Starter (choke) lever..........................3-8
Seat...................................................3-8
Shock absorber ................................3-9
YEIS handling precautions ...............3-9
YPVS .................................................3-9
Sidestand ........................................3-10
Ignition circuit cut-off system .........3-10
PRE-OPERATION CHECKS...............4-1
Pre-operation check list....................4-2OPERATION AND IMPORTANT RIDING
POINTS................................................5-1
Starting a cold engine ......................5-1
Starting a warm engine ....................5-2
Shifting ..............................................5-2
Engine break-in.................................5-2
Parking ..............................................5-3
PERIODIC MAINTENANCE AND
MINOR REPAIR...................................6-1
Owner’s tool kit .................................6-1
Periodic maintenance and
lubrication chart ............................6-2
Removing and installing cowlings
and panels .....................................6-5
Checking the spark plug ..................6-6
Transmission oil ................................6-7
Coolant .............................................6-8
Cleaning the air filter element
and check hose ...........................6-10
Ajusting the carburetor ...................6-11
Adjusting the engine idling
speed...........................................6-12
Ajusting the throttle cable free
play ..............................................6-12
Tires ................................................6-13
Spoke wheels .................................6-15
Adjusting the clutch lever free
play ..............................................6-15
Adjusting the brake lever free
play ..............................................6-16Adjusting the brake pedal position
and free play................................6-17
Adjusting the rear brake light
switch ..........................................6-17
Checking the front and rear
brake pads ..................................6-18
Changing the brake fluid ................6-19
Checking the drive chain slack ......6-19
Adjusting the drive chain slack.......6-20
Lubricating the drive chain .............6-20
Checking and lubricating the
cables ..........................................6-21
Checking and lubricating the
throttle grip and cable .................6-21
Adjusting the autolube pump .........6-21
Checking and lubricating the
brake and shift pedals.................6-21
Checking and lubricating the
breake and clutch levers .............6-21
Checking and lubricating the
sidestand .....................................6-21
Checking the front fork ...................6-22
Checking the steering.....................6-22
Checking the wheel bearings .........6-23
Replacing the fuse ..........................6-24
Replacing the headlight bulb..........6-24
Replacing the tail/brake light
bulb .............................................6-25
Replacing the turn signal light
bulb .............................................6-26
Supporting the motorcycle .............6-26
TABLE OF CONTENTS
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EAU10310
MOTORCYCLES ARE SINGLE
TRACK VEHICLES. THEIR SAFE USE
AND OPERATION ARE DEPENDENT
UPON THE USE OF PROPER RIDING
TECHNIQUES AS WELL AS THE
EXPERTISE OF THE OPERATOR.
EVERY OPERATOR SHOULD KNOW
THE FOLLOWING REQUIREMENTS
BEFORE RIDING THIS MOTORCY-
CLE.
HE OR SHE SHOULD:
 OBTAIN THOROUGH INSTRUC-
TIONS FROM A COMPETENT
SOURCE ON ALL ASPECTS OF
MOTORCYCLE OPERATION.
OBSERVE THE WARNINGS AND
MAINTENANCE REQUIRE-
MENTS IN THE OWNER’S
MANUAL.
OBTAIN QUALIFIED TRAINING
IN SAFE AND PROPER RIDING
TECHNIQUES.
OBTAIN PROFESSIONAL TECH-
NICAL SERVICE AS INDICATED
BY THE OWNER’S MANUAL
AND/OR WHEN MADE NECES-
SARY BY MECHANICAL CONDI-
TIONS.Safe riding
Always make pre-operation
checks. Careful checks may help
prevent an accident.
This motorcycle is designed to
carry the operator and a passen-
ger.
The failure of motorists to detect
and recognize motorcycles in
traffic is the predominating cause
of automobile/motorcycle acci-
dents. Many accidents have
been caused by an automobile
driver who did not see the
motorcycle. Making yourself
conspicuous appears to be very
effective in reducing the chance
of this type of accident.
Therefore:
• Wear a brightly colored jacket.
• Use extra caution when appro- aching and passing through
intersections, since intersec-
tions are the most likely places
for motorcycle accidents to
occur.
• Ride where other motorists can see you. Avoid riding in anot-
her motorist’s blind spot.
Many accidents involve inexpe-
rienced operators. In fact, many
operators who have been invol-
ved in accidents do not even
have a current motorcycle licen-
se.
• Make sure that you are quali- fied and that you only lend your
motorcycle to other qualified
operators.
• Know your skills and limits. Staying within your limits may
help you to avoid an accident.
• We recommend that you prac- tice riding your motorcycle
where there is no traffic until
you have become thoroughly
familiar with the motorcycle
and all of its controls.
Many accidents have been cau-
sed by error of the motorcycle
operator. A typical error made by
the operator is veering wide on a
turn due to EXCESSIVE SPEED
or undercornering (insufficient
lean angle for the speed).
1
tSAFETY INFORMATION
1-1
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EAU10430
Controls and instruments
DESCRIPCION
2-3
2
0km/h406080
100
120
130 20y0
0
0
0
1
5000
8
16171819
2022
23
21
16. Clutch lever (page 3-4)
17. Left handlevar swicht (page 3-3)
18. Speedometer (Page 3-3)
19. Coolant temperature warning lamp (page 3-3)
20. Indicators (page 3-2)
21. Right handlevar swicht (page 3-3)
22. Front brake lever (page 3-5)
23. Throttle grip (page 6-12)
24. Fuel tank cap (page 3-5)
25. Main Switch (page 3-1)
2524
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EAU10460
Main switch/steering lock
The main switch/steering lock con-
trols the ignition and lighting systems,
and is used to lock the steering. The
various positions are described
below.
EAU10550
ON
All electrical circuits are supplied with
power, the meter lighting, taillight,
license plate light and auxiliary lights
come on, and the engine can be star-
ted. The key cannot be removed.
NOTE:
The headlights come on automatically
when the engine is started and stay
on until the key is turned to “OFF”,
even if the engine stalls.
EAU10660
OFF
All electrical systems are off. The key
can be removed.
EAU10680
LOCK
The steering is locked, and all electri-
cal systems are off. The key can be
removed.
T
o lock the steering
1. Turn the handlebars all the way to
the left.
2. Push the key in from the “OFF”
position, and then turn it to
“LOCK” while still pushing it.
3. Remove the key.
T
o unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
EWA10060
s s
WARNING
Never turn the key to “OFF” or
“LOCK” while the vehicle is
moving, otherwise the electrical
systems will be switched off, which
may result in loss of control or an
accident. Make sure that the vehi-
cle is stopped before turning the
key to “OFF” or “LOCK”.
ONOFF
PUSHLOCKIGNITION
3
INSTRUMENT AND CONTROL FUNCTIONS
3-1
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EAU11002
Indicator and warning lights
1. Turn signal indicator light “b”
2. Dimmer indicator light “j”
3. Neutral indicator light “N”
4. Oil level warning light “z”
EAU11030
Turn signal indicator lights “c” and
“d”
The corresponding indicator light flas-
hes when the turn signal switch is
pushed to the left or right.
EAU11070
Neutral indicator light “N”
This indicator light comes on when
the transmission is in the neutral posi-
tion.
EAU11080
High beam indicator light “j”
This indicator light comes on when
the high beam of the headlight is swit-
ched on.
EAU11180
Oil level warning light “z”
This warning light comes on when the
key is in the “ON” position or when
the oil level in the 2-stroke engine oil
tank is low during operation. If the
warning light comes on during opera-
tion, stop immediately and fill the oil
tank with Yamalube 2 or equivalent 2-
stroke engine oil of either JASO grade
“FC” or ISO grades “EG-C” or “EG-
D”. The warning light should go off
after the 2-stroke engine oil tank has
been refilled.
NOTE:
If the warning light does not come on
when the key is in the “ON” position
or does not go off after the 2-stroke
engine oil tank has been refilled, have
a Yamaha dealer check the electrical
circuit.
ECA10010
CAUTION
Do not operate the vehicle until you
know that the engine oil level is suf-
ficient.
EAU11430
Coolant temperature warning light
“y”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and
allow the engine to cool.
ECA10020
CAUTION
Do not operate the engine if it is
overheated.
0km/h406080
100
120
130 20
y
00001
5
0008
bj
zN
3
INSTRUMENT AND CONTROL FUNCTIONS
3-2
1
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EAU11640
Speedometer unit
1. Odometer
2. Tripmeter
3. Reset button
4. Coolant temperature warning lamp
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 trip-
meter 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.
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.
EAU12343
Handlebar switches
1. Dimmer switch “j/k”
2. Horn switch “a”
3. Turn signal switch “c/d”
4. Hazard switch “ ”
EAU12400
Dimmer switch “j/k”
Set this switch to “j” for the high
beam and to “k” for the low beam.
EAU12460
Turn signal switch “c/d”
To signal a right-hand turn, push this
switch to “d”. To signal a left-hand
turn, push this switch to “c”. When
released, the switch returns to the
center position. To cancel the turn
signal lights, push the switch in after it
has returned to the center position.
EAU12500
Horn switch “a”
Press this switch to sound the horn.
EAU12660
Engine stop switch “f/e”
1. Stop switch “f/e”
2. Start switch “g”
Set this switch to “f” before starting
the engine. Set this switch to “e” to
0km
/h406080
100
120
130 20
y
00001
5
0008
bj
zN
3
INSTRUMENT AND CONTROL FUNCTIONS
3-3
1
23
4
1
2 41
3
2
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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 loc-
ked.
EWA10120
s s
WARNING
Make sure that the fuel tank cap is
properly closed and locked before
riding.
EAU13220
Fuel
Make sure that there is sufficient fuel
in the tank. When refueling, be sure to
insert the pump nozzle into the fuel
tank filler hole and to fill the tank to
the bottom of the filler tube as shown.
1. Filing pipe
2. Fuel level
EWA10880
s s
WARNING
Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
Avoid spilling fuel on the hot
engine.
ECA10070
CAUTION
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfa-
ces or plastic parts.
EAU13320
Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
10,7 L (2,82 US gal) (2,35 Imp.gal)
Fuel reserve amount:
1,8 L (0,48 US gal) (0,40 Imp.gal)
ECA11400
CAUTION
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 sys-
tem.
Your Yamaha engine has been desig-
ned to use regular unleaded gasoline
with a research octane number 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 maintenance
costs.
EAU13430
Catalytic converter
This model is equipped with a cataly-
tic converter in the exhaust chamber.
EWA10860
s s
WARNING
The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down
before doing any maintenance
work.
3
INSTRUMENT AND CONTROL FUNCTIONS
3-6
1
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