engine YAMAHA DT125R 2000 Owners Manual

EAU00009
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9 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
Oil level indicator circuit check..........................3-2
Speedometer....................................................3-3
Tachometer.......................................................3-3
Engine temperature gauge...............................3-4
Handlebar switches..........................................3-4
Clutch lever.......................................................3-5
Shift pedal.........................................................3-5
Front brake lever...............................................3-6
Rear brake pedal..............................................3-6
Fuel tank cap....................................................3-6
Fuel (except for Switzerland and Austria).........3-7
Fuel (for Switzerland and Austria)....................3-7
Catalyzer (for Switzerland and Austria)............3-8
Two-stroke engine oil........................................3-9
Fuel cock..........................................................3-9
Starter (choke) Ò
1Ó.........................................3-10Kick starter......................................................3-11
Steering lock...................................................3-11
Seat................................................................3-12
Helmet holder.................................................3-12
Rear shock absorber adjustment....................3-13
Rear carrier.....................................................3-14
Note on handling of the Yamaha Energy
Induction System (Y.E.I.S.).............................3-14
Y.P.V.S.
(Yamaha Power Valve System)......................3-15
Sidestand........................................................3-15
Sidestand switch operation check..................3-16
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.....................................5-3
Shifting..............................................................5-4
Recommended shift points
(for Switzerland only)........................................5-4
Tips for reducing fuel consumption...................5-5
Engine break-in.................................................5-5
Parking..............................................................5-6
123
45
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DESCRIPTION
12
3
4
5
6
7
8
9
2-2
111213
14 15
Right view11.Tool kit (page 6-1)
12.Fuse (page 6-33)
13.Engine oil tank (page 3-9)
14.Rear brake pedal (page 3-6, 6-22)
15.Rear shock absorber spring
preload adjusting nut (page 3-13)
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3-1
ON
OFF
EAU00028
Main switchThe main switch controls the ignition
and lighting systems. Its operation is
described below.
EAU00036
ON
Electrical circuits are switched on.
The engine can be started. The key
cannot be removed in this position.
EAU00038
OFF
All electrical circuits are switched off.
The key can be removed in this posi-
tion.EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
EAU00063
High beam indicator light Ò
&Ó
This indicator comes on when the
headlight high beam is used.
EAU01313
Oil level indicator light Ò
7
Ó
This indicator comes on when the oil
level is low. This light circuit can be
checked by the procedure on page 3-
2.EC000000
cCDo not run the motorcycle until
you know it has sufficient engine
oil.NOTE
Even if the oil is filled to the specified
level, the indicator light may flicker
when riding on a slope or during sud-
den acceleration or deceleration, but
this is normal.
1
2
3
4
EAU00056
Indicator lights
EAU00057
Turn indicator light Ò5Ó
This indicator flashes when the turn
switch is moved to the left or right.
EAU00061
Neutral indicator light ÒNÓ
This indicator comes on when the
transmission is in neutral.1.Turn indicator light Ò5Ó
2.High beam indicator light Ò&Ó
3.Neutral indicator light ÒNÓ
4.Oil level indicator light Ò
7
Ó
3MB-9-E7 12/27/00 2:52 PM Page 13

EAU00075
Oil level indicator circuit check
3-2
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9Turn the main switch to ÒONÓ.
Put the transmission in neutral.
Oil level indicator light
does not come on.Ask a Yamaha dealer to
inspect electrical circuit.
Oil level indicator light
comes on.
Oil level indicator light
does not come on.
Supply engine oil.
Shift into gear.
Engine oil level and
electrical circuit are OK.
Go ahead with riding.
Oil level indicator light
comes on.
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3-3
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
1
2
1.Tachometer
2.Red zone
EAU00102
TachometerThis model is equipped with a
tachometer so the rider can monitor
the engine speed and keep it within
the ideal power range.
EC000003
cCDo not operate in the red zone.
Red zone: 10,500 r/min and above
4
2
3
1
EAU01087
SpeedometerThe speedometer shows riding
speed. This speedometer is equipped
with an odometer and trip odometer.
The trip odometer can be reset to Ò0Ó
with the reset knob. Use the trip
odometer to estimate how far you
can ride on a tank of fuel. This infor-
mation will enable you to plan fuel
stops in the future.1.Speedometer
2.Odometer
3.Trip odometer
4.Reset knob
NOTE:
(for German model equipped with
speed limiter only)
This motorcycle is equipped with a
speed limiter which prevents it from
exceeding a top speed of
80 km/h.
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3-4
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
EAU00127
Turn signal switch
To signal a right-hand turn, push the
switch to Ò6Ó. To signal a left-hand
turn, push the switch to Ò4Ó. Once
the switch is released it will return to
the center position. To cancel the sig-
nal, push the switch in after it has
returned to the center position.
EAU00129
Horn switch Ò*Ó
Press the switch to sound the horn.
1
2
1.Coolant temperature gauge
2.Red zone
EAU01652
Coolant temperature gaugeThis gauge indicates the coolant tem-
perature when the main switch is on.
The engine operating temperature
will vary with changes in weather and
engine load. If the needle points to
the red zone or higher, stop your
motorcycle and let the engine cool.
(See page 6-13 for details.)
EC000002
cCWhen the engine is overheated, do
not continue riding.
2
1
3
4
1.Lights switch
2.Dimmer switch
3.Turn signal switch
4.Horn switch Ò*Ó
EAU00118
Handlebar switches
EAU00134
Lights switch
Turning the light switch to Ò
'
Ó,
turns on the auxiliary light, meter
lights and taillight. Turning the light
switch to Ò:Ó, turns the headlight on
also.
EAU00121
Dimmer switch
Turn the switch to Ò&Ó for the high
beam and to Ò%Ó for the low beam.
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3-5
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
1
1.Engine stop switch
EAU00138
Engine stop switch
The engine stop switch is a safety
device for use in an emergency such
as when the motorcycle overturns or
if trouble occurs in the throttle sys-
tem. Turn the switch to Ò#Ó to start
the engine. In case of emergency,
turn the switch to Ò$Ó to stop the
engine.
EAU00155
Clutch leverThe clutch lever is located on the left
handlebar. Pull the clutch lever to the
handlebar to disengage the clutch,
and release the lever to engage the
clutch. The lever should be pulled
rapidly and released slowly for
smooth clutch operation.
6
5
4
3
2
1 N
1
EAU00157
Shift pedalThis motorcycle is equipped with a
constant-mesh 6-speed transmission.
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
1
1.Clutch lever
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3-7
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
NOTE:
The tank cap cannot be reinstalled
unless it is unlocked. The key must
remain in the cap until the cap is
properly installed and locked onto the
fuel tank.
EW000023
wBe sure the cap is properly
installed and locked in place
before riding the motorcycle.
21
1.Filler tube
2.Fuel level
EAU01183
Fuel(except for Switzerland and
Austria)
Make sure there is sufficient fuel in
the tank. Fill the fuel tank to the bot-
tom of the filler tube as shown in the
illustration.
EW000130
wDo 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.
2
1 3 4
1.Filler tube
2.Filling nozzle
3.Leaf valve
4.Fuel level
EAU01184
Fuel(for Switzerland and Austria)
Make sure there is sufficient fuel in
the tank. When refueling, be sure to
insert the filling nozzle into the filler
hole and fill the tank to the bottom of
the filler tube as shown in the illustra-
tion.
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3-8
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
EW000130
wDo 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.
EAU00185
cCAlways 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 higher
octane grade.
EAU01084
Catalyzer(for Switzerland and Austria)
This motorcycle is equipped with a
catalytic converter in the exhaust
chamber.
EW000128
wThe exhaust system is hot during
and directly after engine operation.
Make sure the exhaust system has
cooled down before making any
adjustment to or lubricating the
motorcycle.
Recommended fuel:
Regular unleaded gasoline
with a research octane
number of 91 or higher.
Fuel tank capacity:
Total:
10.0 L
Reserve:
1.8 L
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3-9
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
EC000114
cCThe following must be observed to
prevent a fire hazard or other dam-
ages.
8 8
Use only unleaded gasoline.
Use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
8 8
Never park this motorcycle in
an area that would cause a fire
hazard such as grass or other
materials that may easily burn.
8 8
Do not allow the engine to idle
for very long.
EAU03050
Fuel cockThe 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 ÒOFFÓ
EAU02956
Two-stroke engine oilMake sure there is sufficient two-
stroke engine oil in the oil tank. Add
the recommended oil as necessary.
21
1.Oil tank cap
2.Stopper
Recommended oil:
Yamalube 2 or 2-stroke
engine oil (JASO FC grade or
ISO EG-C, EG-D grade)
Oil quantity:
1.2 L
OFF: closed position
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