2002 YAMAHA DT125R oil

6-29
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04034
Checking and lubricating the
throttle grip and cableThe operation of the throttle grip
should be checked before each ride.
In addition, the cable should be lubri-
cated or replaced at the intervals
specified in the periodic maintenance
chart.
EAU02962
Checking and lubricating the
cablesThe operation of all control cables
and the condition of the cables
should be checked before each ride,
and the cables and cable ends
should be lubricated if necessary. If a
cable is damaged or does not move
smoothly, have a Yamaha dealer
check or replace it.
EW000112
wDamage to the outer sheath may
interfere with proper cable opera-
tion and will cause the inner cable
to rust. Replace a damaged cable
as soon as possible to prevent
unsafe conditions.
Recommended lubricant:
Engine oil
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6-31
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU02939
Checking the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the peri-
odic maintenance and lubrication
chart.
To check the condition
EW000115
wSecurely support the motorcycle
so that there is no danger of it
falling over.Check the inner tubes for scratches,
damage and excessive oil leakage.To check the operation
1. Place the motorcycle on a level
surface and hold it in an upright
position.
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and
rebounds smoothly.
EC000098
cCIf any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or
repair it.
EAU03165
Checking and lubricating the
sidestandThe operation of the sidestand
should be checked before each ride,
and the sidestand pivot and metal-to-
metal contact surfaces should be
lubricated if necessary.
EW000113
wIf the sidestand does not move up
and down smoothly, have a
Yamaha dealer check or repair it.
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
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7-1
EAU03521
MOTORCYCLE CARE AND STORAGE
7
CareWhile the open design of a motorcy-
cle reveals the attractiveness of the
technology, it also makes it more vul-
nerable. Rust and corrosion can
develop even if high-quality compo-
nents are used. A rusty exhaust pipe
may go unnoticed on a car, however,
it detracts from the overall appear-
ance of a motorcycle. Frequent and
proper care does not only comply
with the terms of the warranty, but it
will also keep your motorcycle looking
good, extend its life and optimize its
performance.Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
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
ECA00010
cC8Avoid using strong acidic
wheel cleaners, especially on
spoked wheels. If such prod-
ucts are used on hard-to-
remove dirt, do not leave the
cleaner on the affected area
any longer than instructed.
Also, thoroughly rinse the area
off with water, immediately dry
it, and then apply a corrosion
protection spray.
8Improper 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.
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7-3
MOTORCYCLE CARE AND STORAGE
7 After cleaning
1. Dry the motorcycle with a
chamois or an absorbing cloth.
2. Immediately dry the drive chain
and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally
induced discoloring of stainless-
steel exhaust systems can be
removed through polishing.)
4. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal, includ-
ing chrome- and nickel-plated,
surfaces.
5. Use spray oil as a universal
cleaner to remove any remaining
dirt.
6. Touch up minor paint damage
caused by stones, etc.
7. Wax all painted surfaces.8. Let the motorcycle dry complete-
ly before storing or covering it.
EWA00001
w8Make sure that there is no oil
or wax on the brakes or tires.
If necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or
acetone, and wash the tires
with warm water and a mild
detergent.
8Before operating the motorcy-
cle test its braking perfor-
mance and cornering behav-
ior.
ECA00013
cC8Apply spray oil and wax spar-
ingly and make sure to wipe
off any excess.
8Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.
8Avoid using abrasive polish-
ing compounds as they will
wear away the paint.NOTE:
Consult a Yamaha dealer for advice
on what products to use.
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7-4
MOTORCYCLE CARE AND STORAGE
7
StorageShort-term
Always store your motorcycle in a
cool, dry place and, if necessary, pro-
tect it against dust with a porous
cover.
ECA00014
cC8Storing the motorcycle in a
poorly ventilated room or cov-
ering it with a tarp, while it is
still wet, will allow water and
humidity to seep in and cause
rust.
8To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.
Long-term
Before storing your motorcycle for
several months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. For motorcycles equipped with a
fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.
3. Drain the carburetor float cham-
ber by loosening the drain bolt;
this will prevent fuel deposits
from building up. Pour the
drained fuel into the fuel tank.
4. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
5. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine
oil into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes
are grounded. (This will limit
sparking during the next step.)
d. Turn the engine over several
times with the starter. (This
will coat the cylinder wall with
oil.)
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
EWA00003
wTo prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turn-
ing the engine over.
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8-1
EAU01038
SPECIFICATIONS
8
Specifications
Model DT125R
Dimensions
Overall length 2,170 mm
2,235 mm (N, S, SF, CH, A only)
Overall width 830 mm
Overall height 1,255 mm
Seat height 885 mm
Wheel base 1,415 mm
Ground clearance 315 mm
Minimum turning radius 2,100 mm
Basic weight (with oil and
full fuel tank)127 kg
129 kg (CH, A only)
Engine
Engine type Liquid-cooled 2-stroke
Cylinder arrangement Forward-inclined single
cylinder
Displacement 124 cm
3
Bore ×Stroke 56.0 ×50.7 mm Compression ratio 6.7:1
Starting system Kickstarter
Lubrication system Separate lubrication
(Yamaha Autolube)
Engine oil (2-cycle)
Type 2-stroke engine oil
Capacity
Total amount 1.2 L
Transmission oil
Type SAE 10W30 type SE motor oil
Capacity
Periodic oil change 0.75 L
Total amount 0.8 L
Cooling system capacity
(total amount)0.92 L
Air filterWet type element
Fuel
Type REGULAR UNLEADED
GASOLINE ONLY
Fuel tank capacity 10 L
Reserve amount 1.8 L
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8-3
SPECIFICATIONS
8
90 kg load–maximum
load*
Front150 kPa (1.50 kgf/cm
2, 1.50 bar)
Rear 175 kPa (1.75 kgf/cm2, 1.75 bar)
Off-road riding
Front125 kPa (1.25 kgf/cm2, 1.25 bar)
Rear 150 kPa (1.50 kgf/cm2, 1.50 bar)
*Total weight of rider, passenger, cargo and accessories
Wheels
Front
Type Spoke wheel
Size 1.60 ×21
Rear
Type Spoke wheel
Size 1.85 ×18
Brakes
Front
Type Single disc brake
Operation Right hand operation
Fluid DOT 4Rear
Type Single disc brake
Operation Right foot operation
Fluid DOT 4
Suspension
Front Telescopic fork
Rear Swingarm (link suspension)
Shock absorber
Front Coil spring/oil damper
Rear Coil-gas spring/oil damper
Wheel travel
Front 270 mm
Rear 260 mm
Electrical
Ignition system C.D.I.
Charging system
Type A.C. magneto
Standard output 14V, 100W @ 5,000 r/min
3MB-9-E8 6/13/01 10:55 AM Page 90

8-4
SPECIFICATIONS
8
Battery
Type GM3-3B
Voltage, capacity 12 V, 3 AH
Headlight typeConventional incandescent bulb
Bulb voltage, wattage ×quantity
Headlight 12 V, 45/40 W ×1
Tail/brake light 12 V, 5/21 W ×1
Front turn signal light 12 V, 21 W ×2
Rear turn signal light 12 V, 21 W ×2
Auxiliary light 12 V, 4 W ×1
12 V, 3.4 W ×1 (GB only)
Meter lighting 12 V, 3.4 W ×2
Neutral indicator light 12 V, 3.4 W ×1
High beam indicator light 12 V, 3.4 W ×1
Oil level indicator light 12 V, 3.4 W ×1
Turn indicator light 12 V, 3.4 W ×1
Fuse10 A
3MB-9-E8 6/13/01 10:55 AM Page 91