YAMAHA DT125R 2000 Manual PDF

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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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1.Screw (´2)
2.Lens
3.Bulb 1.Screw
2.Lens
3.Bulb
EAU01095
Turn signal light bulb
replacement1.Remove the screw and the lens.
2.Remove the defective bulb by
pushing it inward and turning it
counterclockwise.
3.Install a new bulb by pushing it
inward and turning it clockwise.
4.Install the lens and tighten the
screw.
EAU01623*
Tail/brake light bulb
replacement1.Remove the screws and the
lens.
2.Remove the defective bulb by
pushing it inward and turning it
counterclockwise.
3.Install a new bulb by pushing it
inward and turning it clockwise.
4.Install the lens and tighten the
screws.
EC000108
cCDo not over-tighten the screws as
the lens may break.
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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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2 1
3.Elevate the front wheel by plac-
ing a suitable stand under the
engine.
4.Loosen the wheel axle holder
nuts.
5.Remove the wheel axle and the
front wheel. Make sure the
motorcycle is properly supported.NOTE:
Do not depress the brake lever when
the disc and caliper are separated.
EAU03104
Front wheel installation1.Install the speedometer gear unit
housing into the wheel hub.
Make sure the speedometer gear
unit housing is installed with the
projections meshed into the
slots.
2.Lift up the wheel between the
front fork legs and guide the
brake disc between the brake
pads. Make sure there is enough
gap between the brake pads
before inserting the brake disc.
1.Speedometer cable
2.Axle holder nut (´4)
3.Wheel axle
3.Make sure the slot in the
speedometer gear unit fits over
the stopper on the front fork
outer tube.
4.Install the wheel axle and let the
motorcycle down.
5.Tighten the wheel axle the speci-
fied torque.
Tightening torque:
Wheel axle:
58 Nm (5.8 m
0kg)
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1
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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EAU03106
Rear wheel installation1.Install the rear wheel and chain.
Guide the brake disc between
the brake pads. Make sure there
is enough gap between the
brake pads before inserting the
brake disc.
2.Make sure the wheel axle is
inserted from the left side and
that the chain adjusting plates
are installed with the punched
side outward.
3.Install the swingarm end bolts.
4.Adjust the drive chain.
5.Tighten the following parts to the
specified torques.
Tightening torque:
Axle nut:
90 Nm (9.0 m
0kg)
Swingarm end bolt:
3 Nm (0.3 m0kg)
EAU01008
TroubleshootingAlthough Yamaha motorcycles
receive a rigid inspection before ship-
ment from the factory, trouble may
occur during operation.
Any problem in the fuel, compres-
sion, or ignition systems can cause
poor starting and loss of power. The
troubleshooting chart describes a
quick, easy procedure for making
checks.
If your motorcycle requires any
repair, bring it to a Yamaha dealer.
The skilled technicians at a Yamaha
dealership have the tools, experi-
ence, and know-how to properly ser-
vice your motorcycle. Use only gen-
uine Yamaha parts on your
motorcycle. Imitation parts may look
like Yamaha parts, but they are often
inferior. Consequently, they have a
shorter service life and can lead to
expensive repair bills.
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EAU03108
Troubleshooting charts
EW000125
wNever check the fuel system while smoking or in the vicinity of an open flame.Check if there is fuel1. Fuel
Enough fuel.
No fuel.
Go to compression check.
Supply fuel.
Engine doesn’t start, go to compression check.
Use kick starter.2. Compression
There is compression.
No compression.
Go to ignition check.
Ask a Yamaha dealer to
Remove spark plug3. Ignition
Wet.
Dry.
Wipe clean with dry cloth and correct
Ask a Yamaha dealer to inspect.
Engine doesn’t start, ask a YamahaOpen throttle half-way and start
in the fuel tank.
and check electrodes.spark gap or replace spark plug.the engine.
dealer to inspect. inspect.
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4. Engine overheating
EW000070
wDo not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Open the radiator cap as follows. Wait until the
engine has cooled. Remove the radiator cap stopper by removing the screw. Place a thick rag like a towel over
the radiator cap and slowly rotate the cap counterclockwise to the detent. This procedure allows any residual
pressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclock-
wise and remove it.Wait until the
Check the coolant level in the
Level is OK.Level is low, check the
NoLeakage.
Ask a Yamaha dealer to inspectAdd coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a
engine has cooled.reservoir tank and/or radiator.cooling system for leakage.
Yamaha dealer to inspect and repair the cooling system. leakage.
and repair the cooling system.
NOTE:
If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the rec-
ommended coolant as soon as possible.
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7-1
EAU01518
MOTORCYCLE CARE AND STORAGE
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CareThe exposure of its technology
makes a motorcycle charming but
also vulnerable. Although high-quality
components are used, they are not
all rust-resistant. While a rusty
exhaust pipe may remain unnoticed
on a car, it does look unattractive on
a motorcycle. Frequent and proper
care, however, will keep your motor-
cycle looking good, extend its life and
maintain its performance. Moreover,
the warranty states that the vehicle
must be properly taken care of. For
all these reasons, it is recommended
that you observe the following clean-
ing and storing precautions.Before cleaning
1.Cover up the muffler outlet with a
plastic bag.
2.Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly
installed.
3.Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets,
sprockets, the drive chain and
wheel axles. Always rinse the dirt
and degreaser off with water.Cleaning
After normal use
Remove dirt with warm water, a neu-
tral detergent and a soft clean
sponge, then rinse with plenty of
clean water. Use a tooth or bottle
brush for hard-to-reach parts.
Tougher dirt and insects will come off
more easily if the area is covered with
a wet cloth for a few minutes before
cleaning.
ECA00010
cC8
8
Avoid using strong acidic
wheel cleaners, especially on
spoked wheels. If you do use
such products for hard-to-
remove dirt, do not leave it on
any longer than instructed,
then thoroughly rinse it off
with water, immediately dry
the area and apply a corrosion
protection spray.
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Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use
only a soft, clean cloth or
sponge with mild detergent
and water to clean plastic.
8 8
Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abra-
sive cleaning products, sol-
vent or thinner, fuel (gasoline),
rust removers or inhibitors,
brake fluid, antifreeze or elec-
trolyte.8 8
Do not use high-pressure
washers or steam-jet cleaners
since they cause water seep-
age and deterioration in the
following areas: seals (of
wheel bearings, swingarm
bearings, forks and brakes),
electric components (cou-
plers, connectors, instru-
ments, switches and lights),
breather hoses and vents.
8 8
For motorcycles equipped
with a windshield: Do not use
strong cleaners or hard
sponges as they will cause
dulling or scratching. Some
cleaning compounds for plas-
tic may leave scratches on the
windshield. Test the product
on a small hidden part of the
windshield to make sure they
do not leave any marks. If the
windshield is scratched, use a
quality plastic polishing com-
pound after washing.
After riding in the rain, near the seaor on salt-sprayed roadsSince sea salt or salt sprayed on the
roads in the winter are extremely cor-
rosive in combination with water,
carry out the following steps after
each ride in the rain, near the sea or
on salt-sprayed roads. (Salt sprayed
in the winter may remain on the roads
well into spring.)
1.Clean your motorcycle with cold
water and soap after the engine
has cooled down.
ECA00012
cCDo not use warm water since it
increases the corrosive action of
the salt.2.Be sure to apply a corrosion pro-
tection spray on all (even
chrome- and nickel-plated) metal
surfaces to prevent corrosion.
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