Page 8 of 88

Carburetor adjustment ..................................6-15
Idle speed adjustment ...................................6-15
Throttle cable free play adjustment..............6-16
Valve clearance adjustment ..........................6-16
Tires.................................................................6-17
Wheels ............................................................6-19
Clutch lever free play adjustment .................6-19
Front brake lever free play adjustment ........6-20
Rear brake pedal height and free play
adjustment ......................................................6-21
Brake light switch adjustment.......................6-22
Checking the front brake pads and rear brake
shoes ...............................................................6-22
Inspecting the brake fluid level .....................6-23
Brake fluid replacement.................................6-24
Drive chain slack check ..................................6-24
Drive chain slack adjustment ........................6-25
Drive chain lubrication...................................6-26
Cable inspection and lubrication ..................6-27
Throttle cable and grip lubrication ...............6-27
Brake and shift pedal lubrication ..................6-28
Brake and clutch lever lubrication ................6-28
Sidestand lubrication .....................................6-28
Front fork inspection ......................................6-29
Steering inspection ........................................6-29
Wheel bearings ..............................................6-30Battery .............................................................6-30
Fuse replacement ...........................................6-32
Headlight bulb replacement ..........................6-33
Turn signal light bulb replacement ..............6-34
Taillight bulb replacement ............................6-35
Supporting the motorcycle ...........................6-36
Front wheel removal ......................................6-36
Front wheel installation .................................6-37
Rear wheel removal .......................................6-38
Rear wheel installation ..................................6-39
Troubleshooting .............................................6-40
Troubleshooting chart ...................................6-41
MOTORCYCLE CARE AND STORAGE ..............7-1
Care ...................................................................7-1
Storage..............................................................7-4
SPECIFICATIONS................................................8-1
How to use the conversion table ....................8-5
CONSUMER INFORMATION .............................9-1
Identification number records.........................9-1
Key identification number ...............................9-1
Vehicle identification number .........................9-1
Model label .......................................................9-2
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
7
8
9
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6-21
1
2
3
4
5
6
7
8
9Free play
The rear brake pedal free play
should be adjusted to 20 ~ 30 mm
at the brake pedal end. Turn the
adjusting nut on the brake rod in
direction ato increase free play or
in direction bto decrease free
play.
1. Adjusting nut
1
a
b
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01199Rear brake pedal height and
free play adjustment
EW000104
w
It is advisable to have a Yamaha
dealer make this adjustment.
Pedal height
The brake pedal should be posi-
tioned so that its top end is
approximately 60 mm above the
top of the footrest.
1. Footrest
a. Pedal height: 60 mm
b. Free play
1. Loosen the locknut.
2. Turn the adjusting bolt in
direction ato raise pedal
height or in direction bto
lower pedal height.
3. Tighten the locknut.
EW000108
w
After adjusting the pedal height,
adjust brake pedal free play.
1. Locknut
2. Adjusting bolt
1
2
ba1
ab
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6-39
1
2
3
4
5
6
7
8
97. Adjust the rear brake pedal
height and free play. (See page
6-21.)
EW000103
w
Check the operation of the brake
light after adjusting the rear brake.
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01696Rear wheel installation
1. Install the rear wheel and the
axle.
2. Install the axle nut and let the
motorcycle down.
3. Insert the brake rod into the
brake cam lever and install the
brake pedal free play adjusting
nut.
4. Install the brake torque rod
bolt and tighten to the speci-
fied tightening torque. Then
install a new cotter pin.
5. Adjust the drive chain free
play. (See page 6-25.)
6. Tighten the axle nut to the
specified tightening torque. Specified torque:
Brake torque rod bolt:
23 Nm (2.3 m·kg)
Specified torque:
Axle nut:
105 Nm (10.5 m·kg)
435
12
5. Remove the rear brake pedal
free play adjusting nut and
brake rod from the brake cam
lever.
6. Loosen the locknuts and chain
adjusting nuts on each side.
7. Remove the axle nut.
8. Pull out the wheel axle and
remove the wheel assembly.
1. Cotter pin
2. Alignment marks
3. Locknut
4. Chain adjusting nut
5. Axle nut
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1
2
3
4
5
6
7
8
9
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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