2000 YAMAHA DT125R wheel

6-37
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
3
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)
3MB-9-E7 12/27/00 2:52 PM Page 73

6-38
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
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
3MB-9-E7 12/27/00 2:52 PM Page 74

6-39
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
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.
3MB-9-E7 12/27/00 2:52 PM Page 75

7-1
EAU01518
MOTORCYCLE CARE AND STORAGE
1
2
3
4
5
67
8
9
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.
3MB-9-E7 12/27/00 2:52 PM Page 78

7-2
MOTORCYCLE CARE AND STORAGE
1
2
3
4
5
67
8
9 8 8
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.
3MB-9-E7 12/27/00 2:52 PM Page 79

7-5
MOTORCYCLE CARE AND STORAGE
1
2
3
4
5
67
8
96.Lubricate all control cables and
the pivoting points of all levers
and pedals as well as of the
sidestand/centerstand.
7.Check and, if necessary, correct
the tire air pressure, then raise
the motorcycle so that both of its
wheels are off the ground.
Alternatively, turn the wheels a
little every month in order to pre-
vent the tires from becoming
degraded in one spot.
8.Cover up the muffler outlet with a
plastic bag to prevent moisture
from entering.9.Remove the battery and fully
charge it. Store it in a cool, dry
place and recharge it once a
month. Do not store the battery
in an excessively cold or warm
place (less than 0 ¡C or more
than 30 ¡C). For more informa-
tion, see ÒBattery storageÓ in the
chapter ÒPERIODIC MAINTE-
NANCE AND MINOR
REPAIRSÓ.
NOTE:
Make any necessary repairs before
storing the motorcycle.
3MB-9-E7 12/27/00 2:52 PM Page 82

8-1
1
2
3
4
5
6
78
9
EAU01038
SPECIFICATIONS
Specifications
ModelDT125R
Dimensions
Overall length2,170 mm
2,235 mm (N, S, SF, CH, A only)
Overall width830 mm
Overall height1,255 mm
Seat height885 mm
Wheel base1,415 mm
Ground clearance315 mm
Minimum turning radius2,100 mm
Basic weight (with oil and
full fuel tank)127 kg
129 kg (CH, A only)
Engine
Engine typeLiquid-cooled 2-stroke
Cylinder arrangementForward-inclined single
cylinder
Displacement124 cm
3
Bore ´Stroke56.0 ´50.7 mm Compression ratio6.7:1
Starting systemKick starter
Lubrication systemSeparate lubrication
(Yamaha autolube)
Engine oil (2-cycle)
Type2 stroke engine oil
Capacity
Total amount1.2 L
Transmission oil
TypeSAE 10W30 type SE motor oil
Capacity
Periodic oil change0.75 L
Total amount0.8 L
Radiator capacity
(Including all routes)0.92 L
Air filterWet type element
Fuel
TypeRegular unleaded gasoline
Fuel tank capacity10 L
Reserve amount1.8 L
3MB-9-E7 12/27/00 2:52 PM Page 83

8-3
1
2
3
4
5
6
78
9
SPECIFICATIONS
90 kg load ~ maximum
load*
Front150 kPa (1.50 kg/cm
2, 1.50 bar)
Rear175 kPa (1.75 kg/cm2, 1.75 bar)
Off-road riding
Front125 kPa (1.25 kg/cm2, 1.25 bar)
Rear150 kPa (1.50 kg/cm2, 1.50 bar)
* Load is total weight of cargo, rider, passenger and accessories.
Wheels
Front
TypeSpoke wheel
Size1.60 ´21
Rear
TypeSpoke wheel
Size1.85 ´18
Brakes
Front
TypeSingle disc brake
OperationRight hand operation
FluidDOT 3 or DOT 4Rear
TypeSingle disc brake
OperationRight foot operation
FluidDOT 3 or DOT 4
Suspension
FrontTelescopic fork
RearSwingarm (link suspension)
Shock absorber
FrontCoil spring/oil damper
RearCoil-gas spring/oil damper
Wheel travel
Front270 mm
Rear260 mm
Electrical
Ignition systemC.D.I.
Charging system
TypeC.D.I. magneto
3MB-9-E7 12/27/00 2:52 PM Page 85