
EAU00009
TABLE OF CONTENTS
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9 GIVE SAFETY THE RIGHT OF WAY ..................1-1
DESCRIPTION .....................................................2-1
Left view............................................................2-1
Right view .........................................................2-2
Controls/Instruments .......................................2-3
INSTRUMENT AND CONTROL
FUNCTIONS ........................................................3-1
Main switch ......................................................3-1
Indicator lights..................................................3-1
Speedometer ....................................................3-2
Handlebar switches..........................................3-2
Clutch lever .......................................................3-4
Shift pedal.........................................................3-4
Front brake lever ..............................................3-4
Rear brake pedal ..............................................3-5
Fuel tank cap.....................................................3-5
Fuel ....................................................................3-6
Fuel cock ...........................................................3-7
Starter (choke) “1” .........................................3-8
Steering lock .....................................................3-8
Seat ...................................................................3-9
Helmet holder ...................................................3-9
Rear shock absorber adjustment ..................3-10
Sidestand ........................................................3-10Sidestand/clutch switch operation check .....3-11
PRE-OPERATION CHECKS.................................4-1
Pre-operation check list ...................................4-1
OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting the engine ..........................................5-1
Starting a warm engine ...................................5-3
Shifting..............................................................5-4
Recommended shift point
(for Switzerland only) ......................................5-4
Tips for reducing fuel consumption ...............5-5
Engine break-in ................................................5-5
Parking ..............................................................5-6
PERIODIC MAINTENANCE AND MINOR
REPAIR ................................................................6-1
Tool kit ..............................................................6-1
Periodic maintenance and lubrication............6-3
Panel removal and installation .......................6-6
Panel A ..............................................................6-6
Panel B ..............................................................6-7
Spark plugs .......................................................6-8
Engine oil ..........................................................6-9
Air filter ...........................................................6-12
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6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
EC000066
cC
8Do not put in any chemical
additives. Engine oil also lubri-
cates the clutch and additives
could cause clutch slippage.
8Be sure no foreign material
enters the crankcase.
9. Start the engine and warm up
for a few minutes. While
warming up, check for oil leak-
age. If oil leakage is found,
stop the engine immediately
and check for the cause.
10. Stop the engine and check the
oil level. Recommended oil:
See page 8-1.
Oil quantity:
Total amount:
1.7 L
Periodic oil change:
1.4 L
With oil filter replacement:
1.6 L
EAU01174*Air filter
The air filter should be cleaned at
the specified intervals. It should be
cleaned more frequently if you are
riding in unusually wet or dusty
areas.
1. Bolt
2. Air filter cover
3. Air filter case
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6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
4. Remove the wing nut and the
air filter.
1. Wing nut
2. Air filter
5. Remove the foam element
from its frame and clean it
with solvent. After cleaning,
remove the remaining solvent
by squeezing it.
6. Apply recommended oil to the
entire surface of the element
and squeeze out the excess oil.
It should be wet but not drip-
ping.
1. Foam element
2. Frame
121
2
Recommended oil:
Engine oil
7. Pull the element over its
frame, install the air filter in
the case and tighten the wing
nut.
8. Install the air filter cover.
9. Connect the hoses and install
the air filter case.
EC000082
cC
8Make sure the air filter is prop-
erly seated in the air filter
case.
8The engine should never be
run without the air filter
installed. Excessive piston
and/or cylinder wear may
result.
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98Use only the designated quali-
ty brake fluid. Otherwise, the
rubber seals may deteriorate,
causing leakage and poor
brake performance.
NOTE:
If DOT 4 is not available, DOT 3 can
be used.
8Refill with the same type of
brake fluid. Mixing fluids may
result in a harmful chemical
reaction and lead to poor
brake performance.
8Be careful that water does not
enter the master cylinder when
refilling. Water will significant-
ly lower the boiling point of
the fluid and may result in
vapor lock. Recommended brake fluid:
DOT 4
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU00727
Rear brake
Apply the brake and inspect the
wear indicator.
If the indicator reaches the wear
limit line, ask a Yamaha dealer to
replace the shoes.
1. Wear limit line
2. Wear indicator
EAU00732Inspecting the brake fluid
level
Insufficient brake fluid may let air
enter the brake system, possibly
causing the brakes to become inef-
fective.
Before riding, check that the brake
fluid is above the minimum level
and fill when necessary.
Observe these precautions:
8When checking the fluid level,
make sure the top of the mas-
ter cylinder is level by turning
the handlebars.
1. Minimum level mark
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EAU00773Throttle cable and grip
lubrication
The throttle twist grip assembly
should be greased at the time that
the cable is lubricated, since the
grip must be removed to get at the
end of the throttle cable. After
removing the screws, hold the end
of the cable up in the air and put in
several drops of lubricant. With the
throttle grip disassembled, coat the
metal surface of the grip assembly
with a suitable all-purpose grease.
PERIODIC MAINTENANCE AND MINOR REPAIR
EC000097
cC
Be sure to oil the chain after wash-
ing the motorcycle or riding in the
rain.
EAU02962Cable inspection and
lubrication
EW000112
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Damage to the outer housing of
cables may lead to internal rusting
and interfere with the cable move-
ment. Replace damaged cables as
soon as possible to prevent unsafe
conditions.
Lubricate the cables and cable ends.
If a cable does not operate smooth-
ly, ask a Yamaha dealer to replace it.
Recommended lubricant:
Engine oil
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU02984Brake and shift pedal
lubrication
Lubricate the pivoting parts.
EAU02985Brake and clutch lever
lubrication
Lubricate the pivoting parts.
Recommended lubricant:
Engine oil
Recommended lubricant:
Engine oil
EAU02986Sidestand lubrication
Lubricate the sidestand pivoting
point and metal-to-metal contact
surfaces. Check that the sidestand
moves up and down smoothly.
EW000113
w
If the sidestand does not move
smoothly, consult a Yamaha deal-
er.
Recommended lubricant:
Engine oil
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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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