2002 YAMAHA DT125R key

EAU00005
IMPORTANT MANUAL INFORMATIONParticularly important information is distinguished in this manual by the following notations:
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
Failure to follow WARNING instructions could result in severe injury or death to the
motorcycle operator, a bystander, or a person inspecting or repairing the motorcycle.A CAUTION indicates special precautions that must be taken to avoid damage to
the motorcycle.A NOTE provides key information to make procedures easier or clearer.
Qw
cCNOTE:
NOTE:
8This manual should be considered a permanent part of this motorcycle and should remain
with it even if the motorcycle is subsequently sold.
8Yamaha 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 ques-
tions concerning this manual, please consult your Yamaha dealer.
3MB-9-E8 6/13/01 10:55 AM Page 2

TABLE OF CONTENTS
SPECIFICATIONS ............................................ 8-1
Conversion table ............................................ 8-5
CONSUMER INFORMATION ........................... 9-1
Identification numbers .................................... 9-1
Key identification number ............................... 9-1
Vehicle identification number ......................... 9-1
Model label ..................................................... 9-2
98
3MB-9-E8 6/13/01 10:55 AM Page 7

3-1
EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00028
Main switchThe main switch controls the ignition
and lighting systems. The various
main switch positions are described
below.
EAU00036
ON
All electrical systems are supplied
with power, and the engine can be
started. The key cannot be removed.
EAU00038
OFF
All electrical systems are off. The key
can be removed.
EAU00061
Neutral indicator light “N”
This indicator light comes on when
the transmission is in the neutral
position.
EAU04258
2-stroke engine oil level warning
light “
7
”
This warning light comes on when
the 2-stroke engine oil level is low.
The electrical circuit of the warning
light can be checked according to the
following procedure.
1. Turn the key to “ON”.
2. Shift the transmission into the
neutral position.
3. If the warning light does not
come on, have a Yamaha dealer
check the electrical circuit.
NOTE:
Even if the 2-stroke engine oil level is
sufficient, the warning light may flick-
er when riding on a slope or during
sudden acceleration or deceleration,
but this is not a malfunction.
ON
OFF
EAU03034
Indicator and warning lights
EAU00057
Turn signal indicator light “5”
This indicator light flashes when the
turn signal switch is pushed to the left
or right.
EAU00063
High beam indicator light “&”
This indicator light comes on when
the high beam of the headlight is
switched on.
1
2
3
4
1. Turn signal indicator light “5”
2. High beam indicator light “&”
3. Neutral indicator light “N”
4. 2-stroke engine oil level warning
light “
7
”
3MB-9-E8 6/13/01 10:55 AM Page 13

3-3
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU01652
Coolant temperature gaugeWith the key in the “ON” position, the
coolant temperature gauge indicates
the temperature of the coolant. The
coolant temperature varies with
changes in the weather and engine
load. If the needle reaches or enters
the red zone, stop the motorcycle
and let the engine cool. (See page
6-45 for further instructions.)
EC000002
cCDo not operate the engine if it is
overheated.
EAU03889
Turn signal switch “4/6”
To signal a right-hand turn, push this
switch to “6”. To signal a left-hand
turn, push this switch to “4”. 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.
EAU00129
Horn switch “*”
Press this switch to sound the horn.
1
2
1. Coolant temperature gauge
2. Red zone
EAU00118
Handlebar switches
EAU03898
Light switch “9/
'
/:”
Set this switch to “'
” to turn on
the auxiliary light, meter lighting and
taillight. Set the switch to “:” to turn
on the headlight also. Set the switch
to “9” to turn off all the lights.
EAU03888
Dimmer switch “&/%”
Set this switch to “&” for the high
beam and to “%” for the low beam.
2
1
3
4
1. Light switch “9/
'
/:”
2. Dimmer switch “&/%”
3. Turn signal switch “4/6”
4. Horn switch “*”
3MB-9-E8 6/13/01 10:55 AM Page 15

3-5
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00158
Brake leverThe 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
EAU00162
Brake pedalThe 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
EAU00177
Fuel tank capTo remove the fuel tank cap
1. Insert the key into the lock and
turn it 1/4 turn counterclockwise.
2. Turn the fuel tank cap 1/3 turn
counterclockwise and pull it off.
31
2
1. Fuel tank cap
2. Unlock.
3. Open.
3MB-9-E8 6/13/01 10:55 AM Page 17

3-6
INSTRUMENT AND CONTROL FUNCTIONS
3To 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 1/4 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.
EW000023
wMake sure that the fuel tank cap is
properly closed and locked before
riding.
EAU03753
Fuel(except for Switzerland and
Austria)
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
EW000130
w8Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
8Avoid spilling fuel on the hot
engine.
21
1. Filler tube
2. Fuel level
EAU03754
Fuel(for Switzerland and Austria)
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
3
5 42
1. Pump nozzle
2. Fuel tank filler hole
3. Filler tube
4. Fuel level
5. Leaf valve
3MB-9-E8 6/13/01 10:55 AM Page 18

3-10
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU03839
Starter (choke) lever“1”Starting a cold engine requires a rich-
er air-fuel mixture, which is supplied
by the starter (choke).
Move the lever in direction ato turn
on the starter (choke).
Move the lever in direction bto turn
off the starter (choke).
a
b
1
1. Starter (choke) lever “1”
EAU00212
KickstarterTo start the engine, fold out the kick-
starter lever, move it down lightly with
your foot until the gears engage, and
then push it down smoothly but force-
fully. This model is equipped with a
primary kickstarter, allowing the
engine to be started in any gear if the
clutch is disengaged. However, shift-
ing the transmission into the neutral
position before starting is recom-
mended.
1
1. Kickstarter
EAU02934
Steering lockTo lock the steering
1. Turn the handlebar all the way to
the right.
2. Open the steering lock cover,
and then insert the 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.
4. Check that the steering is locked,
remove the key, and then close
the lock cover.
2
1
1. Steering lock cover
2. Steering lock
3MB-9-E8 6/13/01 10:55 AM Page 22

3-11
INSTRUMENT AND CONTROL FUNCTIONS
3 To unlock the steering
1. Open the steering lock cover,
and then insert the key.
2. Push the key in, turn it 1/8 turn
counterclockwise so that it
moves out, and then release it.
3. Remove the key, and then close
the lock cover.
EAU01648
SeatTo remove the seat
1. Remove panels A and B. (See
page 6-8 for panel removal and
installation procedures.)
2. Remove the bolts and pull the
seat off.
1
1. Bolt (
×2)
To install the seat
1. Insert the projections on the front
of the seat into the seat holders
as shown.
2. Place the seat in the original
position, and then tighten the
bolts.
3. Install the panels.NOTE:
Make sure that the seat is properly
secured before riding.
1
2
1. Projection (×2)
2. Holder (×2)
3MB-9-E8 6/13/01 10:55 AM Page 23