engine YAMAHA XV125S 2000 Owner's Guide

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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.
PERIODIC MAINTENANCE AND MINOR REPAIR
2. Loosen the pinch bolt and
wheel axle.
3. Elevate the front wheel by
placing a suitable stand under
the engine.
4. Remove the wheel axle and
the front wheel.
NOTE:
Do not depress the brake lever
when the disc and caliper are sepa-
rated.
1. Pinch bolt
2. Wheel axle
EAU01547Front wheel installation
1. Install the speedometer gear
unit into the wheel hub. Make
sure the wheel hub and the
speedometer gear unit hous-
ing are installed with the pro-
jections 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.
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PERIODIC MAINTENANCE AND MINOR REPAIR
5. Push down hard on the han-
dlebars several times to check
for proper fork operation.
6. Tightening the wheel axle to
the specified torque.
7. Install the pinch bolts and
tighten them to the specified
torque.
8. Install the speedometer cable.EAU01550Rear wheel removalEW000122
w
8It is advisable to have a
Yamaha dealer service the
wheel.
8Securely support the motorcy-
cle so there is no danger of it
falling over.
1. Remove the axle nut cotter pin
and brake torque rod cotter
pin. Tightening torque:
Wheel axle:
59 Nm (5.9 m·kg)
Pinch bolt:
20 Nm (2.0 m·kg)
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2. Loosen the axle nut and brake
torque nut.
3. Elevate the rear wheel by plac-
ing a suitable stand under the
engine.
4. Remove the brake torque rod
nut and bolt from the brake
shoe plate.
1. Brake torque rod
2. Brake torque rod cotter pin
3. Brake torque rod nut
4. Brake rod
5. Rear brake pedal free play adjusting nut
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01562
Troubleshooting chart
EW000125
wNever check the fuel system while smoking or in the vicinity of an open flame.1. Fuel
2. Compression
3. Ignition
4. Battery
Remove spark
There is compression.
Go to ignition check.
No compression.
Ask a Yamaha dealer to inspect.Wet.
Dry.Wipe clean with dry cloth and correct Open throttle half-way and start the
Ask a Yamaha dealer to inspect.
Engine turns over
Engine turns overBattery good.
Check fluid, recharge,
Check if there is fuel
Enough fuel.
No fuel.
Go to compression check.Supply fuel.
in the fuel tank
electrode. plugs and check
quickly.
slowly. check connections.Engine doesn’t start, go to battery
check.engine. plug gap or replace spark plugs.
Engine doesn’t start, ask aYamaha dealer to inspect.
Engine doesn’t start, go to compression check.
Use the electric
starter. Use the electric starter.
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MOTORCYCLE CARE AND STORAGE
7-2
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.
8Do 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, solvent
or thinner, fuel (gasoline), rust
removers or inhibitors, brake
fluid, antifreeze or electrolyte.8Do 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 (couplers,
connectors, instruments,
switches and lights), breather
hoses and vents.
8For 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
sea or on salt-sprayed roads
Since sea salt or salt sprayed on
the roads in the winter are
extremely corrosive in combina-
tion with water, carry out the fol-
lowing 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
cC
Do not use warm water since it
increases the corrosive action of
the salt.
2. Be sure to apply a corrosion
protection spray on all (even
chrome- and nickel-plated)
metal surfaces to prevent cor-
rosion.
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MOTORCYCLE CARE AND STORAGE
7-4
Storage
Short-term
Always store your motorcycle in a
cool, dry place and, if necessary,
protect it against dust with a
porous cover.
ECA00014
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8Storing 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 chem-
icals are stored.
Long-term
Before storing your motorcycle for
several months:
1. Follow all the instructions in
the “Care” section of this
chapter.
2. Drain the carburetor float
chambers by loosening the
drain bolts; this will prevent
fuel deposits from building up.
Pour the drained fuel into the
fuel tank.
3. Only for motorcycles equipped
with a fuel cock which has an
“OFF” position: Turn the fuel
cock to “OFF”.
4. Fill up the fuel tank and add
fuel stabilizer (if available) to
prevent the fuel tank from rust-
ing and the fuel from deterio-
rating.
5. Perform the following steps to
protect the cylinders, piston
rings, etc. from corrosion.
a. Remove the spark plug caps
and spark plugs.
b. Pour a teaspoonful of engine
oil into each spark plug bore.c. Install the spark plug caps onto
the spark plugs and place the
spark plugs 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 walls
with oil.)
e. Remove the spark plug caps
from the spark plugs, install
the spark plugs and then the
spark plug caps.
EWA00003
w
When turning the engine over, be
sure to ground the spark plug elec-
trodes to prevent damage or injury
from sparking.
6. Lubricate all control cables and
the pivoting points of all levers
and pedals as well as of the
sidestand/centerstand.
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EAU01038
SPECIFICATIONS
Specifications
Model XV125S
Dimensions
Overall length 2,190 mm
Overall width 805 mm
Overall height 1,140 mm
Seat height 685 mm
Wheel base 1,495 mm
Ground clearance 145 mm
Minimum turning radius 2,800 mm
Basic weight (with oil and full
fuel tank)147 kg
Engine
Engine type Air-cooled 4-stroke, SOHC,
gasoline
Cylinder arrangement V-type 2-cylinder
Displacement 124 cm
3
Bore ´Stroke 41.0 ´47.0 mm
Compression ratio 10.7:1
Starting system Electric starter
Lubrication system Wet sumpEngine oil
Type
Recommended engine oil
classification API Service SE, SF, SG type
or higher
cC
Be sure to use motor oils that do not contain anti-friction
modifiers. Passenger car motor oils (often labeled “Energy
Conserving”) contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting in reduced
component life and poor engine performance.
Quantity
Periodic oil change 1.4 L
With oil filter replacement 1.6 L
Total amount 1.7 L
Air filterWet type element
8-1
–10° 0° 10° 20° 30°
40°
SAE 10W/30
SAE 10W/40
SAE 20W/40
SAE 20W/50
–20°
SAE 15W/40 50°C
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