2000 YAMAHA DT125R Owners Manual

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95.Fill the engine with sufficient oil
to reach the specified level.
Install the oil filler cap and tight-
en it.
EC000079
cCDo not put in any chemical addi-
tives. Transmission oil also lubri-
cates the clutch and additives
could cause clutch slippage.6.Start the engine and warm up for
a few minutes. While warming
up, check for oil leakage. If oil
leakage is found, stop the engine
immediately and check for
cause. Recommended oil:
See page 8-1.
Oil quantity:
Total amount: 0.8 L
Periodic oil change: 0.75 L
1
Transmission oil replacement
1.Warm up the engine for several
minutes.
2.Stop the engine. Place an oil pan
under the engine to catch the oil
and remove the oil filler cap.
3.Remove the drain bolt and drain
the oil.
4.Install the drain bolt and tighten it
to the specified torque.1.Drain bolt
Tightening torque:
Drain bolt:
15 Nm (1.5 m
0kg)
1
2.With the engine stopped, check
the oil level through the level
window located at the right side
crankcase cover.NOTE:
Wait a few minutes until the oil level
settles before checking.3.The oil level should be between
the maximum and minimum level
on the level window. If the level
is low, add sufficient oil to raise it
to the specified level.1.Oil filler cap
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EAU01808
Cooling system1.Remove panel D. (See page 6-9
for panel removal and installation
procedures.)
2.Check the coolant level in the
reservoir tank when the engine is
cold as the coolant level will vary
with engine temperature. The
coolant level should be between
the maximum and minimum
marks.
3.If the level is low, add coolant or
distilled water to raise it to the
specified level.4.Install the panel.
EC000080
cCHard water or salt water is harmful
to the engine. You may use dis-
tilled water if you canÕt get soft
water.NOTE:
If water is added, have a Yamaha
dealer check the antifreeze content of
the coolant as soon as possible.If your motorcycle overheats, see
page 6-41 for details.
2
1
1.Maximum level mark
2.Minimum level mark
EAU03101
Changing the coolant1.Put the motorcycle on a level
place.
2.Remove cowling C and panel D.
(See page 6-8 ~ 6-9 for cowling
and panel removal and installa-
tion procedures.)
3.Remove the radiator cap stopper
bolt and the radiator cap.
12
1.Stopper bolt
2.Radiator cap
Reservoir tank capacity:
0.35 L
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98.Install the reservoir tank hose.
9.Pour the recommended coolant
into the radiator until it is full.
Recommended antifreeze:
High quality ethylene glycol
antifreeze containing
corrosion inhibitors for
aluminum engines.
Antifreeze and water mixing ratio:
1:1
Total amount:
1.05 L
Reservoir tank capacity:
0.35 L
4.Place a container under the
engine and remove the coolant
drain bolt.5.Disconnect the reservoir tank
hose on the reservoir tank side
and drain the coolant from the
reservoir tank.
6.After draining the coolant, thor-
oughly flush the cooling system
with clean tap water.
7.Replace the coolant drain bolt
washer if it is damaged and tight-
en the coolant drain bolt to the
specified torque.
1
13
2
1.Drain bolt1.Reservoir tank hose
2.Maximum level mark
3.Minimum level mark
Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m
0kg)
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EC000080
cCHard water or salt water is harmful
to the engine. You may use dis-
tilled water if you canÕt get soft
water.10.Install the radiator cap.
11.Run the engine several minutes.
Stop the engine and recheck the
coolant level in the radiator. If it
is low, add more coolant until it
reaches the top of the radiator.
12.Install the radiator cap stopper
bolt.
13.Fill the reservoir tank with
coolant up to maximum level.
14.Install the reservoir tank cap and
check for coolant leakage.NOTE:
If any leakage is found, ask a
Yamaha dealer to inspect the cooling
system.15.Install the cowling and the panel.
1
EAU03107
Air filterThe air filter should be cleaned at the
specified intervals. It should be
cleaned more frequently when riding
in unusually wet or dusty areas.
1.Remove panel D. (See page 6-9
for panel removal and installation
procedures.)
2.Remove the air filter case by
removing the screws.1.Screw (´3)
3.Remove the air filter from the
case.
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96.Insert the air filter guide into the
air filter and install it in the case.
7.Install the air filter case cover
and panel by installing the
screws.
EC000082
cC8
8
Make sure the air filter is prop-
erly seated in the air filter
case.
8 8
The engine should never be
run without the air filter
installed. Excessive piston
and/or cylinder wear may
result.
EAU00629
Carburetor adjustmentThe carburetor is a vital part of the
engine and requires very sophisticat-
ed adjustment. Most adjustments
should be left to a Yamaha dealer
who has the professional knowledge
and experience to do so. However,
the following may be serviced by the
owner as part of routine mainte-
nance.
EC000094
cCThe carburetor was set at the
Yamaha factory after many tests. If
the settings are changed, poor
engine performance and damage
may result.
4.Remove the air filter element
from its guide and clean it with
solvent. After cleaning, remove
the remaining solvent by squeez-
ing the element.
5.Apply recommended oil to the
entire surface of the element and
squeeze out the excess oil. It
should be wet but not dripping.
1
2
1.Guide
2.Filter element
Recommended oil:
Engine oil
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b
a
1
EAU00632
Idle speed adjustment1.Start the engine and warm it up
for a few minutes at approxi-
mately 1,000 to 2,000 r/min.
Occasionally rev the engine to
4,000 to 5,000 r/min. The engine
is warm when it quickly responds
to the throttle.
2.Set the idle to the specified
engine speed by adjusting the
throttle stop screw. Turn the
screw in direction ato increase
engine speed and in direction b
to decrease engine speed.1.Throttle stop screw
NOTE:
If the specified idle speed cannot be
obtained by performing the above
adjustment, consult a Yamaha deal-
er.
Standard idle speed:
1,250 ~ 1,450 r/min
a
EAU00634
Throttle cable free play
adjustmentNOTE:
Before checking the throttle cable
free play, the engine idling speed
should be adjusted.Adjust the throttle cable by turning
the adjusting nut so that specified
free play at the throttle grip is
obtained.a.Free play
Free play:
3 ~ 5 mm
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EAU00652
TiresTo ensure maximum performance,
long service and safe operation, note
the following:
Tire air pressure
Always check and adjust the tire
pressure before operating the motor-
cycle.
EW000082
wTire inflation pressure should be
checked and adjusted when the
temperature of the tire equals the
ambient air temperature. Tire infla-
tion pressure must be adjusted
according to total weight of cargo,
rider, passenger, and accessories
(fairing, saddlebags, etc. if
approved for this model), and vehi-
cle speed.
*Load is the total weight of cargo, rider, passenger
and accessories. Maximum load*180 kg
178 kg (CH, A only)
Cold tire pressureFrontRear
125 kPa150 kPa
Up to 90 kg(1.25 kg/cm
2,(1.50 kg/cm
2,
1.25 bar)1.50 bar)
90 kg load ~150 kPa175 kPa
Maximum load*(1.50 kg/cm
2,(1.75 kg/cm
2,
1.50 bar) 1.75 bar)
125 kPa150 kPa
Off-road riding(1.25 kg/cm
2,(1.50 kg/cm
2,
1.25 bar)1.50 bar)
1.Loosen the locknut.
2.Turn the adjusting nut in direc-
tion ato increase free play and
in direction bto decrease free
play.
3.Tighten the locknut.
2
1
b
a
1.Locknut
2.Adjusting nut
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EW000083
wProper loading of your motorcycle
is important for several character-
istics of your motorcycle, such as
handling, braking, performance
and safety. Do not carry loosely
packed items that can shift.
Securely pack your heaviest items
close to the center of the motorcy-
cle, and distribute the weight even-
ly from side to side. Properly
adjust the suspension for your
load, and check the condition and
pressure of your tires. NEVER
OVERLOAD YOUR MOTORCYCLE.
Make sure the total weight of the
cargo, rider, passenger, and
accessories (fairing, saddlebags,
etc. if approved for this model)
does not exceed the maximum
load of the motorcycle. Operation
of an overloaded motorcycle could
cause tire damage, an accident, or
even injury.
Tire inspection
Always check the tires before operat-
ing the motorcycle. If center tread
depth reaches the limit as shown, if
the tire has a nail or glass fragments
in it, or if the side wall is cracked,
contact a Yamaha dealer immediate-
ly and have the tire replaced.
EW000078
wAfter extensive tests, the tires
mentioned below have been
approved by Yamaha Motor Co.,
Ltd. for this model. No guarantee
for handling characteristics can be
given if tire combinations other
than what is approved are used on
this motorcycle. The front and rear
tires should be of the same manu-
facture and design.
1
2
1.Tread depth
2.Side wall
ManufacturerSizeType
BRIDGESTONE2.75-21 45PTW25FRONTManufacturerSizeType
BRIDGESTONE4.10-18 59PTW44REAR
Minimum tire tread
1.6 mm
depth (front and rear)
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