2007 YAMAHA YBR125 clutch

ROAD SAFETY TIPS....................................... 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 cum steering lock ..................... 3-1
Speedometer................................................ 3-2
Fuel gauge .................................................... 3-2
Indicator lights .............................................. 3-2
Handlebar switches ..................................... 3-3
Clutch lever ................................................... 3-3
Shift pedal ..................................................... 3-4
Front brake lever ........................................... 3-4
Rear brake pedal .......................................... 3-4
Fuel tank cap ................................................ 3-5
Fuel............................................................... 3-5
Fuel cock ....................................................... 3-6
Starter Lever .................................................. 3-7
Kick starter .................................................... 3-7
Seat............................................................... 3-8Storage compartment .................................. 3-9
Rear shock absorber adjustment ............... 3-9
Handle Seat, Lifting Handle, stay Lock .......3-10
PRE-OPERATION CHECKS ........................... 4-1
Pre-operation check list ............................... 4-1
OPERATION AND IMPORTANT RIDING
POINTS............................................................ 5-1
Starting and warming up a
cold engine ................................................... 5-1
Starting a warm engine ................................ 5-2
Shifting.......................................................... 5-2
Tips for reducing fuel consumption ............. 5-3
Running-in.................................................... 5-3
Parking.......................................................... 5-4
PERIODIC MAINTENANCE AND MINOR
REPAIR ............................................................ 6-1
Tool kit ........................................................... 6-1
Preventive maintenance schedule .............. 6-3
Panel removal and installation .................... 6-5
Spark plug inspection .................................. 6-7
Engine OIl ..................................................... 6-8
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4
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TABLE OF CONTENTS
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TABLE OF CONTENTSAir filter ...........................................................6-10
Carburetor adjustment ................................. 6-11
Idle speed adjustment .................................6-12
Throttle cable free play adjustment .............6-12
Valve clearance adjustment .........................6-13
Tyres ..............................................................6-13
Wheels ..........................................................6-15
Clutch lever free play adjustment ................6-16
Front brake adjustment ................................6-16
Rear brake adjustment ................................6-17
Brake light switch adjustment .....................6-17
Checking the brake shoes ...........................6-18
Drive chain slack check ................................6-18
Drive chain slack adjustment ......................6-19
Drive chain lubrication ..................................6-21
Cable inspection and lubrication .................6-21
Throttle cable and grip lubrication ...............6-21
Brake and shift pedal lubrication .................6-22
Brake and clutch lever lubrication ................6-22
Center and sidestand lubrication ................6-22
Front fork inspection .....................................6-23
Steering inspection ......................................6-23
Wheel bearings ............................................6-24
Battery ...........................................................6-24Fuse replacement ........................................6-26
Headlight bulb replacement ........................6-27
Turn signal and taillight bulb
replacement..................................................6-28
Front wheel removal .....................................6-28
Front wheel installation ................................6-30
Rear wheel removal .....................................6-30
Rear wheel installation ................................6-32
Troubleshooting...........................................6-32
Troubleshooting chart ..................................6-33
CLEANING & STORAGE
A. Cleaning .................................................... 7-1
B. Storage ...................................................... 7-2
SPECIFICATIONS ........................................... 8-1
CUSTOMER INFORMATION........................... 9-1
Key identification number ............................. 9-1
Frame serial number ................................... 9-1
Engine serial number .................................. 9-1
DETATCHMENTS
Pre-Delivery Inspection ................................10-1
Installation....................................................10-5
GREEN BOOK
78910
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ROAD SAFETY TIPS
SAFE RIDING
1. Before riding, you should learn to ride your motorcycle properly and all the control functions should be known
to you.
2. Remember that there are no legal “rights” when it comes to survival as far as Motorcyclists are
concerned. The fact that you may be well within your rights is no guarantee that you will avoid a collision with
a bigger vehicle whose driver fails to see you. Always ride defensively and take nothing on road for granted.
3. Develop the ability to react swiftly to any unexpected road hazards or emergencies giving yourself time to
spare for appropriate response.
4. Develop the ability to get the most out of your Motorcycle, But at the same time get to know its capabili-
ties and limitations.
5. Ride thoughtfully, planning your route well in advance.
6.Give proper Signals and use Horn and Headlights judiciously.
7. Don’t ride in another motorist’s blind spot.
8. Always make pre-ride safety checks before you start the Engine.
SAFE BRAKING
Use the basic methods of braking effectively.
1. Engine Brake : When the Throttle is released, compression backs up and acts as the Engine Brake.
If the riding condition allows, reduce speed by shifting the Gear down.
2. Front and Rear Brakes : It is important to apply equal force to the Front and Rear Brakes simultaneously.
• Use Front and Rear Brakes simultaneously.
• Be sure not to disengage the clutch while braking.
• While riding downhill always use Engine as a Brake and never ride in Neutral Gear.
• While riding down hill do not switch off ignition while Engine is in gear. CAUTION :
1-1
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17. Clutch Lever (page 3-3, 6-16)
18. Left Hand Switch (page 3-3)
19. Speedometer(page 3-2)
20. Main switch Cum Steering Lock (Page 3-1)
21. Fuel Gauge (page 3-2)22. Front Brake Lever (page 3-4, 6-16)
23. Throttle Grip(page6-12)
24. Fuel Tank Cap (page 3-5)
25. Turn Indicator Switch (page 3-2)Controls / InstrumentsDESCRIPTION
STANDARD VEHICLE
2-3
24 17181920
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Turn signal switch
Horn switch " "
Lights switch To signal a right-hand turn, push the
switch to " ". To signal a left-
hand turn, push the switch to " ".
Once the switch is released it will
return to the center position. To
cancel the signal, push the switch in
after it has returned to the center
position.
Press the switch to sound the horn.
Turning the light switch to " ",
turns on the meter light and tail-light.
Turning the light switch to “ ",
turns the headlight on also.
1. Clutch leverClutch leverThe clutch lever is located on the left
handlebar. Pull the clutch lever to
the handlebar to disengage the
clutch, and release the lever to
engage the clutch. The lever should
be pulled rapidly and released slowly
for smooth clutch operation.
INSTRUMENT AND CONTROL FUNCTIONS
3-3
1. PassSwitch " "
2. Dimmer Switch
3. Light switch
4. Turn signal cum cancellation switch“ “
5. Horn switchHandlebar switchesDimmer switch
Turn the switch to" " for the high
beam and to " " for the low beam. Pass switch""
Press the switch to operate the
Passing Light.
1
1
2
3
4 5

1. Shift pedalShift pedalThe shift pedal is located on the left
side of the engine and is used in
combination with the clutch when
shifting.
Use your toe or heel to shift up and
your toe to shift down.
1. Front brake leverFront brake leverThe front brake lever is located on
the right handlebar. Pull it toward the
handlebar to apply the front brake.
1 Rear brake pedalRear brake pedalThe rear brake pedal is on the right
side of the Motorcycle. Press down on
the brake pedal to apply the rear
brake.
INSTRUMENT AND CONTROL FUNCTIONS
USE BOTH BRAKES SIMULTANEOUSLY
3-4

1. Arrow markRES: This indicates reserve. If you
run out of fuel while riding, set
the fuel cock to this position.
Fill the tank at the first
opportunity. Be sure to set the
fuel cock back to "ON" after
refueling
1. Kick starterKick-starterRaise the right Pillion footrest, and
rotate the kick starter away from the
engine. Push the starter down
lightly with your foot Kick until the
gears engage, then kick smoothly and
forcefully to start the engine. This
model has a primary-coupled kick
starter so the engine can be started in
any gear if the clutch is disengaged.
However, shifting to neutral before
starting is recommended.kick
INSTRUMENT AND CONTROL FUNCTIONS
3-7
NEVER MIX OIL IN PETROL1. Starter leverStarter leverStarting a cold engine requires a
richer air-fuel mixture. A separate
starter circuit supplies this mixture.
Move the Starter Lever in
Direction a to Turn on the Starter
Move the Starter Lever in
Direction b to Turn Off the Starter
RES
1

PRE-OPERATION CHECKS
4-1
Owners are personally responsible for their vehicle's condition. Your Motorcycle's vital functions can start to
deteriorate quickly and unexpectedly- even if it remains unused (for instance, if it is exposed to the elements). Any
damage. fluid leak or loss of tyre pressure could have serious consequence Therefore' it is very important that, in
addition to a thorough visual inspection, you check the following points before each ride.
PRE - OPERATION CHECK LIST
Brake and shift pedal shafts Engine oil
Control and meter cable Wheels and tyres Drive chain Clutch
Throttle grip and housing Rear brake Front brake
Lubricate if necessary.Check tyre pressure, wear, damage and spoke tightness.
Lubricate if necessary. Check for smooth operation. Lubricate if necessary.
Check for smooth operation. Tighten spokes if necessary. Adjust if necessary.
6-21
6-22 6-13 ~ 6-15 6-18 ~ 6-21
Check oil level.
Fill with oil if necessary.
Check chain slack and condition. Check operation, condition and free play.
Adjust if necessary.
Lubricate if necessary. Check for smooth operation. Adjust if necessary.
Check operation, condition and free play.Adjust if necessary. Check operation, condition and free play.
ITEM
CHECKS
6-8 ~ 6-9 6-12, 6-213-3, 6-16
3-4, 6-17
3-4, 6-16PAGE