2002 YAMAHA DT125R lock

EAU00009
TABLE OF CONTENTS
GIVE SAFETY THE RIGHT OF WAY ............... 1-1
DESCRIPTION .................................................. 2-1
Left view ......................................................... 2-1
Right view ....................................................... 2-2
Controls and instruments ............................... 2-3
INSTRUMENT AND CONTROL FUNCTIONS .. 3-1
Main switch ..................................................... 3-1
Indicator and warning lights ............................ 3-1
Speedometer unit .......................................... 3-2
Tachometer .................................................... 3-2
Coolant temperature gauge ............................ 3-3
Handlebar switches ........................................ 3-3
Clutch lever .................................................... 3-4
Shift pedal ...................................................... 3-4
Brake lever ..................................................... 3-5
Brake pedal .................................................... 3-5
Fuel tank cap .................................................. 3-5
Fuel (except for Switzerland and Austria) ...... 3-6
Fuel (for Switzerland and Austria) ................. 3-6
Catalytic converter
(for Switzerland and Austria) ....................... 3-7
2-stroke engine oil .......................................... 3-8
Fuel cock ........................................................ 3-9
Starter (choke) lever ..................................... 3-10Kickstarter .................................................... 3-10
Steering lock ................................................. 3-10
Seat .............................................................. 3-11
Helmet holder ............................................... 3-12
Adjusting the shock absorber assembly ....... 3-12
Carrier .......................................................... 3-14
YEIS handling precautions .......................... 3-14
YPVS ............................................................ 3-14
Sidestand ..................................................... 3-15
Ignition circuit cut-off system ........................ 3-16
PRE-OPERATION CHECKS ............................. 4-1
Pre-operation check list .................................. 4-1
OPERATION AND IMPORTANT
RIDING POINTS ............................................... 5-1
Starting a cold engine .................................... 5-1
Starting a warm engine .................................. 5-2
Shifting ........................................................... 5-2
Recommended shift points
(for Switzerland only) .................................. 5-3
Tips for reducing fuel consumption ................ 5-3
Engine break-in .............................................. 5-4
Parking ........................................................... 5-5
123
45
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3-5
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00158
Brake leverThe brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the han-
dlebar grip.
1
1. Brake lever
EAU00162
Brake pedalThe brake pedal is on the right side
of the motorcycle. To apply the rear
brake, press down on the brake
pedal.
1
1. Brake pedal
EAU00177
Fuel tank capTo remove the fuel tank cap
1. Insert the key into the lock and
turn it 1/4 turn counterclockwise.
2. Turn the fuel tank cap 1/3 turn
counterclockwise and pull it off.
31
2
1. Fuel tank cap
2. Unlock.
3. Open.
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3-6
INSTRUMENT AND CONTROL FUNCTIONS
3To install the fuel tank cap
1. Insert the fuel tank cap into the
tank opening with the key insert-
ed in the lock, and then turn the
cap 1/3 turn clockwise.
2. Turn the key 1/4 turn clockwise,
and then remove it.
NOTE:
The fuel tank cap cannot be installed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly installed and
locked.
EW000023
wMake sure that the fuel tank cap is
properly closed and locked before
riding.
EAU03753
Fuel(except for Switzerland and
Austria)
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
EW000130
w8Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
8Avoid spilling fuel on the hot
engine.
21
1. Filler tube
2. Fuel level
EAU03754
Fuel(for Switzerland and Austria)
Make sure that there is sufficient fuel
in the tank. When refueling, be sure
to insert the pump nozzle into the fuel
tank filler hole and to fill the tank to
the bottom of the filler tube as shown.
1
3
5 42
1. Pump nozzle
2. Fuel tank filler hole
3. Filler tube
4. Fuel level
5. Leaf valve
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3-10
INSTRUMENT AND CONTROL FUNCTIONS
3
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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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3-11
INSTRUMENT AND CONTROL FUNCTIONS
3 To unlock the steering
1. Open the steering lock cover,
and then insert the key.
2. Push the key in, turn it 1/8 turn
counterclockwise so that it
moves out, and then release it.
3. Remove the key, and then close
the lock cover.
EAU01648
SeatTo remove the seat
1. Remove panels A and B. (See
page 6-8 for panel removal and
installation procedures.)
2. Remove the bolts and pull the
seat off.
1
1. Bolt (
×2)
To install the seat
1. Insert the projections on the front
of the seat into the seat holders
as shown.
2. Place the seat in the original
position, and then tighten the
bolts.
3. Install the panels.NOTE:
Make sure that the seat is properly
secured before riding.
1
2
1. Projection (×2)
2. Holder (×2)
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3-12
INSTRUMENT AND CONTROL FUNCTIONS
3
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Helmet holderTo open the helmet holder, insert the
key into the lock, and then turn the
key as shown.
To lock the helmet holder, turn the
key to the original position, and then
remove it.
EW000030
wNever ride with a helmet attached
to the helmet holder, since the hel-
met may hit objects, causing loss
of control and possibly an acci-
dent.
1
1. Open.
EAU03591
Adjusting the shock
absorber assemblyThis shock absorber assembly is
equipped with a spring preload
adjusting nut.
EC000015
cCNever attempt to turn an adjusting
mechanism beyond the maximum
or minimum settings.
b
a21
1. Locknut
2. Adjusting nutAdjust the spring preload as follows.
1. Loosen the locknut.
2. To increase the spring preload
and thereby harden the suspen-
sion, turn the adjusting nut in
direction a. To decrease the
spring preload and thereby soft-
en the suspension, turn the
adjusting nut in direction b.
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3-13
INSTRUMENT AND CONTROL FUNCTIONS
3 3. Tighten the locknut to the speci-
fied torque.
EC000018
cCAlways tighten the locknut against
the adjusting nut, and then tighten
the locknut to the specified torque.
EAU00315
wThis shock absorber contains
highly pressurized nitrogen gas.
For proper handling, read and
understand the following informa-
tion before handling the shock
absorber. The manufacturer can-
not be held responsible for proper-
ty damage or personal injury that
may result from improper han-
dling.
8Do not tamper with or attempt
to open the gas cylinder.
8Do not subject the shock
absorber to an open flame or
other high heat sources, other-
wise it may explode due to
excessive gas pressure.
8Do not deform or damage the
gas cylinder in any way, as
this will result in poor damp-
ing performance.
8Always have a Yamaha dealer
service the shock absorber.
NOTE:
The spring preload setting is deter-
mined by measuring distance A,
shown in the illustration. The shorter
distance A is, the lower the spring
preload; the longer distance A is, the
higher the spring preload.
A
Spring preload:
Minimum (soft):
Distance A = 235 mm
Standard:
Distance A = 230 mm
Maximum (hard):
Distance A = 220 mm
Tightening torque:
Locknut:
55 Nm (5.5 m0kgf)
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6-18
PERIODIC MAINTENANCE AND MINOR REPAIR
6
b
a
1
1. Throttle stop screw
To increase the engine idling
speed, turn the screw in direction
a. To decrease the engine idling
speed, turn the screw in direction
b.
NOTE:
If the specified idling speed cannot
be obtained as described above,
have a Yamaha dealer make the
adjustment.
EAU00634
Adjusting the throttle cable
free playThe throttle cable free play should
measure 3–5 mm at the throttle grip.
Periodically check the throttle cable
free play and, if necessary, adjust it
as follows.NOTE:
The engine idling speed must be cor-
rectly adjusted before checking and
adjusting the throttle cable free play.
a
a. Free play
Engine idling speed:
1,250–1,450 r/min
1. Loosen the locknut.
2. To increase the throttle cable
free play, turn the adjusting nut
in direction a. To decrease the
throttle cable free play, turn the
adjusting nut in direction b.
3. Tighten the locknut.
2
1
b
a
1. Locknut
2. Adjusting nut
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