2000 YAMAHA DT125R air condition

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EAU01833
Spark plugRemoval
1.Remove the spark plug cap.2.Use the spark plug wrench in the
tool kit to remove the spark plug
as shown.Inspection
The spark plug is an important
engine component and is easy to
inspect. The condition of the spark
plug can indicate the condition of the
engine.
The ideal color on the white insulator
around the center electrode is a
medium-to-light tan color for a motor-
cycle that is being ridden normally.
Do not attempt to diagnose such
problems yourself. Instead, take the
motorcycle to a Yamaha dealer. You
should periodically remove and
inspect the spark plug because heat
and deposits will cause any spark
plug to slowly break down and erode.
If electrode erosion becomes exces-
sive, or if carbon and other deposits
are excessive, you should replace
the spark plug with the specified plug.1.Spark plug cap
Specified spark plug:
BR9ES (NGK)
BR8ES (NGK) (CH, A only)
1
1.Spark plug wrench
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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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EAU00685
WheelsTo ensure maximum performance,
long service, and safe operation, note
the following:
8Always inspect the wheels
before a ride. Check for cracks,
bends or warpage of the wheel.
Be sure the spokes are tight and
undamaged. If any abnormal
condition exists in a wheel, con-
sult a Yamaha dealer. Do not
attempt even small repairs to the
wheel. If a wheel is deformed or
cracked, it must be replaced.
8Tires and wheels should be bal-
anced whenever either one is
changed or replaced. Failure to
have a wheel balanced can
result in poor performance,
adverse handling characteristics,
and shortened tire life.
8Ride at moderate speeds after
changing a tire since the tire sur-
face must first be broken in for it
to develop its optimal character-
istics.
EAU00681
w8 8
Operating the motorcycle with
excessively worn tires
decrease riding stability and
can lead to loss of control.
Have excessively worn tires
replaced by a Yamaha dealer
immediately. Brakes, tires, and
related wheel parts replace-
ment should be left to a
Yamaha Service Technician.
8 8
Patching a punctured tube is
not recommended. If it is
absolutely necessary to do so,
use great care and replace the
tube as soon as possible with
a good quality replacement.
NOTE:
These limits may be different by regu-
lation from country to country. If so,
conform to the limits specified by the
regulations of your own country.
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EC000097
cCBe sure to oil the chain after wash-
ing the motorcycle or riding in the
rain.
EAU02962
Cable inspection and
lubrication
EW000112
wDamage to the outer housing of
cables may lead to internal rusting
and interfere with the cable move-
ment. Replace damaged cables as
soon as possible to prevent unsafe
conditions.Lubricate the cables and cable ends.
If a cable does not operate smoothly,
ask a Yamaha dealer to replace it.
EAU00773
Throttle cable and grip
lubricationThe throttle twist grip assembly
should be greased at the time that
the cable is lubricated, since the grip
must be removed to get at the end of
the throttle cable. After removing the
screws, hold the end of the cable up
in the air and put in several drops of
lubricant. With the throttle grip disas-
sembled, coat the metal surface of
the grip assembly with a suitable all-
purpose grease.
Recommended lubricant:
Engine oil
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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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