2000 YAMAHA DT125R ECU

3-12
INSTRUMENT AND CONTROL FUNCTIONS
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To install
1.Insert the projections on the front
of the seat into the holders, then
tighten the seat bolts.
2.Install the panels.NOTE:
Make sure that the seat is securely
fitted.
1
EAU00261
Helmet holderTo open the helmet holder, insert the
key in the lock and turn it as shown.
To lock the helmet holder, turn the
key to its original position.
EW000030
wNever ride with a helmet in the hel-
met holder. The helmet may hit
objects, causing loss of control
and possibly an accident.1.Open
1
EAU01648
SeatTo remove
1.Remove panels D and E. (See
page 6-9 for panel removal and
installation procedures.)
2.Remove the seat bolts and lift
the seat upward.1.Bolt (
´2)
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6-19
PERIODIC MAINTENANCE AND MINOR REPAIR
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9
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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6-29
PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU02986
Sidestand lubricationLubricate the sidestand pivoting point
and metal-to-metal contact surfaces.
Check that the sidestand moves up
and down smoothly.
EW000113
wIf the sidestand does not move
smoothly, consult a Yamaha deal-
er.
Recommended lubricant:
Engine oil
EAU02939
Front fork inspectionVisual check
EW000115
wSecurely support the motorcycle
so there is no danger of it falling
over.Check for scratches or damage on
the inner tube and excessive oil leak-
age from the front fork.Operation check
1.Place the motorcycle on a level
place.
2.Hold the motorcycle in an upright
position and apply the front
brake.
3.Push down hard on the handle-
bars several times and check if
the fork rebounds smoothly.
EC000098
cCIf any damage or unsmooth move-
ment is found with the front fork,
consult a Yamaha dealer.
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6-30
PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU00794
Steering inspectionPeriodically inspect the condition of
the steering. Worn out or loose steer-
ing bearings may be dangerous.
Place a stand under the engine to
raise the front wheel off the ground.
Hold the lower end of the front forks
and try to move them forward and
backward. If any free play can be felt,
ask a Yamaha dealer to inspect and
adjust the steering. Inspection is eas-
ier if the front wheel is removed.
EW000115
wSecurely support the motorcycle
so there is no danger of it falling
over.
EAU01144
Wheel bearingsIf there is play in the front or rear
wheel hub or if the wheel does not
turn smoothly, have a Yamaha dealer
inspect the wheel bearings.
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6-34
PERIODIC MAINTENANCE AND MINOR REPAIR
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93.Remove the headlight connector
and the bulb holder cover.4.Turn the bulb holder counter-
clockwise to remove it and then
remove the defective bulb.
EW000119
wKeep flammable products and your
hands away from a bulb while it is
on, as it is hot. Do not touch a bulb
until it cools down.5.Put a new bulb into position and
secure it in place with the bulb
holder.
12
1.Bulb holder cover
2.Connector
1
1.Bulb holder
6.Install the bulb holder cover, con-
nector and headlight unit.
7.Install the cowling.
8.If the headlight beam adjustment
is necessary, ask a Yamaha
dealer to make that adjustment.
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PERIODIC MAINTENANCE AND MINOR REPAIR
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122
1.Disc cover
2.Screw (´2)
EAU00898
Front wheel removal
EW000122
w8
8
It is advisable to have a
Yamaha dealer service the
wheel.
8 8
Securely support the motorcy-
cle so there is no danger of it
falling over.1.Remove the disc cover.
2.Remove the speedometer cable
from the front wheel side.
EAU01579
Supporting the motorcycleSince the Yamaha DT125R has no
centerstand, follow these precautions
when removing the front and rear
wheel or performing other mainte-
nance requiring the motorcycle to
stand upright. Check that the motor-
cycle is in a stable and level position
before starting any maintenance. A
strong wooden box can be placed
under the engine for added stability.
Front wheel service
To stabilize the rear of the motorcy-
cle, either use a motorcycle stand or
place a motorcycle jack under the
frame in front of the rear wheel to
prevent it from moving from side to
side. Then use a motorcycle stand to
elevate the front wheel off of the
ground.Rear wheel service
Use a motorcycle stand or motorcycle
jack to elevate the motorcycle so the
rear wheel is off the ground.
Alternatively, two jacks can be placed
under the frame or swingarm.
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PERIODIC MAINTENANCE AND MINOR REPAIR
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1
1.Swingarm end bolt (´2)
EAU03105
Rear wheel removal
EW000122
w8
8
It is advisable to have a
Yamaha dealer service the
wheel.
8 8
Securely support the motorcy-
cle so there is no danger of it
falling over.1.Loosen the rear axle nut.
2.Elevate the rear wheel by placing
a suitable stand under the
engine.
3.Remove the swingarm end bolts.4.Remove the axle nut.
5.Push the wheel forward and
remove the drive chain.
6.Pull out the rear axle and remove
the wheel assembly by pulling
backward.
NOTE:
8Do not depress the brake pedal
when the disc and caliper are
separated.
8You do not have to disassemble
the chain in order to remove or
install the rear wheel.
2
1
1.Axle nut
2.Chain adjusting plate
6.Tighten the axle holder nuts to
the specified tightening torque.
Tighten the upper nuts first and
then lower ones. When tightened
in this sequence, there should be
a gap formed at the bottom of
the axle holder.
7.After tightening the holder nuts,
push down on the handlebars
several times and check if the
fork rebounds smoothly. Tightening torque:
Axle holder nut:
10 Nm (1.0 m
0kg)1
1.Gap
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