2005 YAMAHA DT125R Owners Manual

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
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stop the engine in case of an emer-
gency, such as when the motorcycle
overturns or when the throttle cable is
stuck.
EAU12710
Start switch “g”
Push this switch to crank the engine
with the starter.
ECA10050
CAUTION
See page 5-1 for starting instruc-
tions prior to starting the engine.
EAU12763
Hazard switch “ ”
With the key in the “ON” position, turn
this switch to “ ” to turn on the
hazard lights (simultaneous flashing
of all turn signal lights).
The hazard lights are used in case of
an emergency or to warn other drivers
when your vehicle is stopped where it
might be a traffic hazard.
ECA10060
CAUTION
Do not use the hazard light for an
extended length of time, otherwi-
sethe battery may discharge.
EAU12820
Clutch lever
1. Clutch lever
The clutch lever is located at the left
handlebar grip. To disengage the
clutch, pull the lever toward the hand-
lebar grip. To engage the clutch, rele-
ase the lever. The lever should be
pulled rapidly and released slowly for
smooth clutch operation.
The clutch lever is equipped with a
clutch switch, which is part of the
ignition circuit cut-off system. (See
page 3-11.)
EAU12880
Shift pedal
N. Neutral
1. Shift pedal
The shift pedal is located on the left
side of the engine and is used in com-
bination with the clutch lever when
shifting the gears of the 6-speed
constant-mesh transmission equip-
ped on this motorcycle.
NOTE:
Use your toes or heel to shift up and
your toes to shift down.
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EAU12890
Brake lever
1. Brake lever
The brake lever is located at the right
handlebar grip. To apply the front bra-
ke, pull the lever toward the handle-
bar grip.
EAU12941
Brake pedal
1. Brake pedal
The brake pedal is on the right side of
the motorcycle. To apply the rear bra-
ke, press down on the brake pedal.
EAU13150
Fuel tank cap
To 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.
1. Fuel tank cap
2. Unlock
3. Open
To install the fuel tank cap
1. Insert the fuel tank cap into the
tank opening with the key inser-
ted in the lock, and then turn the
cap 1/3 turn clockwise.
2. Turn the key 1/4 turn clockwise,
and then remove it.
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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.
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ECA10700
CAUTION
The following precautions must be
observed to prevent a fire hazard or
other damages.
Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
Never park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.
Do not allow the engine to idle
too long.
EAU13460
2-stroke engine oil
1. Oil tank cap
2. Sensor
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed.
Recommended oil:
Yamalube 2 or equivalent 2-stroke
engine oil (JASO grade “FC”, or ISO
grades “EG-C” or “EG-D”)
Oil quantity:
1,3 L (1,37 US qt) (0,29 Imp.qt)
EAU13560
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
The fuel cock has three positions:OFF
1. Arrow mark
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.
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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!
EAU13590
Starter (choke) lever “q”
1. Choke lever
Starting a cold engine requires a
richer air-fuel mixture, which is sup-
plied by the starter (choke).
Move the lever in direction (a) to turn
on the starter (choke).
Move the lever in direction (b) to turn
off the starter (choke).
EAU13960
Seat
To remove the seat
Remove the bolts, and then pull the
seat off.
1. Bolt (x2)
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.
NOTE:
Make sure that the seat is properly
secured before riding.
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EAU15090
Shock absorberEWA10220
s s
WARNING
This shock absorber contains
highly pressurized nitrogen gas.
For proper handling, read and
understand the following informa-
tion before handling the shock
absorber. The manufacturer cannot
be held responsible for property
damage or personal injury that may
result from improper handling.
Do not tamper with or attempt
to open the gas cylinder.
Do not subject the shock
absorber to an open flame or
other high heat sources, other-
wise it may explode due to
excessive gas pressure.
Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
Always have a Yamaha dealer
service the shock absorber.
EAU15250
YEIS handling precautions
1. YEIS
Improper installation of or damage to
any part of the YEIS (Yamaha Energy
Induction System) will result in poor
performance. Therefore, handle the
YEIS air chamber and air chamber
hose with special care and immedia-
tely replace any cracked or damaged
parts.
ECA10140
CAUTION
Do not attempt to modify the YEIS
in any way.
EAU15260
YPVS
1. YPVS
This model is equipped with the YPVS
(Yamaha Power Valve System). This
system boosts engine performance
and efficiency by means of a variable
valve in the exhaust port. The YPVS
valve is constantly adjusted in accor-
dance with the engine speed by a
computer-controlled servomotor.
Since the YPVS is an important part
of the engine and requires very sop-
histicated adjustment, have a Yamaha
dealer, who has the necessary profes-
sional knowledge and experience,
make this adjustment.
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ECA10150
CAUTION
The YPVS has been set and exten-
sively tested at the Yamaha factory.
Changing these settings without
sufficient technical knowledge may
result in poor performance of or
damage to the engine.
YPVS operation noises can be heard
in the following instances:
When the key is turned to “ON”
and the engine is started.
When the engine stalls with the
key in the “ON” position.
ECA10160
CAUTION
If the YPVS does not operate, have
a Yamaha dealer check it.
EAU15300
Sidestand
The sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the motorcycle upright.
NOTE:
The built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain
situations. (See further down for an
explanation of the ignition circuit cut-
off system.)
EWA10240
s s
WARNING
The vehicle must not be ridden with
the sidestand down, or if the sides-
tand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control. Yama-
ha’s ignition circuit cut-off system
has been designed to assist the
operator in fulfilling the responsibi-
lity of raising the sidestand before
starting off. Therefore, check this
system regularly as described
below and have a Yamaha dealer
repair it if it does not function pro-
perly.
EAU15311
Ignition circuit cut-off
system
The ignition circuit cut-off system
(comprising the sidestand switch,
clutch switch and neutral switch) has
the following functions.
It prevents starting when the
transmission is in gear and the
sidestand is up, but the clutch
lever is not pulled.
It prevents starting when the
transmission is in gear and the
clutch lever is pulled, but the
sidestand is still down.
It cuts the running engine when
the transmission is in gear and
the sidestand is moved down.
Periodically check the operation of
the ignition circuit cut-off system
according to the following procedure.
EWA10250
s s
WARNING
If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
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