2002 YAMAHA DT125R ECO mode

3-10
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU03839
Starter (choke) lever“1”Starting a cold engine requires a rich-
er air-fuel mixture, which is supplied
by the starter (choke).
Move the lever in direction ato turn
on the starter (choke).
Move the lever in direction bto turn
off the starter (choke).
a
b
1
1. Starter (choke) lever “1”
EAU00212
KickstarterTo start the engine, fold out the kick-
starter lever, move it down lightly with
your foot until the gears engage, and
then push it down smoothly but force-
fully. This model is equipped with a
primary kickstarter, allowing the
engine to be started in any gear if the
clutch is disengaged. However, shift-
ing the transmission into the neutral
position before starting is recom-
mended.
1
1. Kickstarter
EAU02934
Steering lockTo lock the steering
1. Turn the handlebar all the way to
the right.
2. Open the steering lock cover,
and then insert the key.
3. Turn the key 1/8 turn counter-
clockwise, push it in while turning
the handlebar slightly to the left,
and then turn the key 1/8 turn
clockwise.
4. Check that the steering is locked,
remove the key, and then close
the lock cover.
2
1
1. Steering lock cover
2. Steering lock
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6-20
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Tire inspection
The tires must be checked before
each ride. If the center tread depth
reaches the specified limit, if the tire
has a nail or glass fragments in it, or
if the sidewall is cracked, have a
Yamaha dealer replace the tire imme-
diately.
NOTE:
The tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
1
2
1. Tread depth
2. Tire side wall
EAU00681
w8Have a Yamaha dealer replace
excessively worn tires.
Besides being illegal, operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
8The replacement of all wheel-
and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who
has the necessary profession-
al knowledge and experience.
8It is not recommended to
patch a punctured tube. If
unavoidable, however, patch
the tube very carefully and
replace it as soon as possible
with a high-quality product.
Tire information
This motorcycle is equipped with tube
tires.
EW000078
w8The front and rear tires should
be of the same make and
design, otherwise the handling
characteristics of the motorcy-
cle cannot be guaranteed.
8After extensive tests, only the
tires listed below have been
approved for this model by
Yamaha Motor Co., Ltd.
Minimum tire tread depth
(front and rear)1.6 mm
FRONT
Manufacturer Size TypeBRIDGESTONE
2.75-21 45P TW25
REAR
Manufacturer Size Type
BRIDGESTONE
4.10-18 59P TW44
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8-2
SPECIFICATIONS
8
Carburetor
Manufacturer MIKUNI
Model × quantity TM28SS × 1
Spark plug
Manufacturer/model NGK / BR9ES
NGK / BR8ES (CH, A only)
Spark plug gap 0.7–0.8 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Helical gear
Primary reduction ratio 71/22 (3.227)
Secondary reduction system Chain drive
Secondary reduction ratio 3.563
Number of drive chain
sprocket teeth (rear/front) 57/16
Transmission type Constant mesh 6-speed
Operation Left foot operation
Gear ratio 1st 2.833
2nd 1.875
3rd 1.412
4th 1.143
5th 0.957
6th 0.818Chassis
Frame type Semi double cradle
Caster angle 27°30’
Trail 113 mm
Tire
Front
Type With tube
Size 2.75-21 45P
Manufacturer/ BRIDGESTONE / TW25
model
Rear
Type With tube
Size 4.10-18 59P
Manufacturer/ BRIDGESTONE / TW44
model
Maximum load* 180 kg
178 kg (CH, A only)
Air pressure (cold tire)
up to 90 kg load*
Front125 kPa (1.25 kgf/cm
2, 1.25 bar)
Rear150 kPa (1.50 kgf/cm2, 1.50 bar)
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9-1
EAU01039
CONSUMER INFORMATION
9
EAU02944
Identification numbersRecord the key identification number,
vehicle identification number and
model label information in the spaces
provided below for assistance when
ordering spare parts from a Yamaha
dealer or for reference in case the
vehicle is stolen.
1. KEY IDENTIFICATION
NUMBER:
2. VEHICLE IDENTIFICATION
NUMBER:
3. MODEL LABEL INFORMATION:
EAU01042
Key identification numberThe key identification number is
stamped into the key.
Record this number in the space pro-
vided and use it for reference when
ordering a new key.
1
1. Key identification number
EAU01043
Vehicle identification numberThe vehicle identification number is
stamped into the steering head pipe.
Record this number in the space pro-
vided.NOTE:
The vehicle identification number is
used to identify your motorcycle and
may be used to register your motor-
cycle with the licensing authority in
your area.
1
1. Vehicle identification number
1
6
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9-2
CONSUMER INFORMATION
9
EAU03757
Model labelThe model label is affixed to the loca-
tion shown. Record the information
on this label in the space provided.
This information will be needed when
ordering spare parts from a Yamaha
dealer.
1
1. Model label
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