engine YAMAHA YBR125 2007 Owners Manual

PRINTED IN INDIA2Y14(OM-01)284-11-06-Eger Engine Lifewer Maintenance Costwer Exhaust Smoke
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OWNER'S MANUAL
1B5-F8199-E0
1B56
YAMAHAYAMAHA
1B5-F8199-E0

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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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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DESCRIPTION
2-2
Right view11. Rear shock absorber (page 3-9)
12. Air filter (page 6-10)
13. Kick starter (page 3-7)14. Seat(page 3-8)
15. Engine oil filler cap (page 6-8)
16. Rear brake pedal (page 3-4,6-17)
STANDARD VEHICLE
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Main switch cum steering
lockThe main switch controls the ignition
and lighting systems. Its operation is
described below.
ON:
Electrical circuits are switched on.
The engine can be started. The key
cannot be removed in this position.
OFF:
Engine will be shut off. All electrical
circuits are switched off. The key can
be removed in this position.
1. Push
2. Release
3. TurnLOCK:
The steering is locked in this position
and all electrical circuits are switched
off.
The key can be removed in this
position.
To lock the steering, turn the handle-
bars all the way to the left or right. With
the key at "OFF", push it into the main
switch and release it, turn it counter-
clockwise to "LOCK" and remove it. To
release the lock, turn the key to
"OFF".
INSTRUMENT AND CONTROL FUNCTIONS
WARNING
Never turn the key to "LOCK" when
the Motorcycle is moving.
3-1

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

This tank cap cannot be closed
unless the key is in the lock. The key
cannot be removed if the cap is not
locked properly.
Be sure the cap is properly
installed and locked in place
before riding the Motorcycle.WARNING
1. Filler tube
2. Fuel levelFuelMake sure there is sufficient fuel in the
tank. Fill the fuel tank to the bottom of
the filler tube as shown in the
illustration.
Do not overfill the fuel tank. Avoid
spilling fuel on the hot engine. Do
not fill the fuel tank above the
bottom of the filler tube to avoid
Spillage
1. OpenFuel tank capTO OPEN:
Insert the key and turn it 1/4 turn
clockwise. The lock will be released
and the cap can be opened.
TO CLOSE:
Push the tank cap into position with
the key inserted. To remove the key,
turn it counterclockwise to the
original position.
Ensure the arrow on fuel tank is
towards the Front of the bike when
inserting Fuel Tank Cap in Fuel
Tank.
INSTRUMENT AND CONTROL FUNCTIONS
NOTE :
3-5
WARNING
WARNING
1
2
1
1. Arrow
1¿

Always wipe off spilled fuel
immediately with a dry and clean
soft cloth. Fuel may deteriorate
painted surfaces or plastic parts.
Recommended Fuel :
Fuel tank capacity :Regular gasoline (Petrol)
Total :
13.0 L
Reserve :
1.7 L
1. Arrow markFuel cockThe fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
The fuel cock has three positions,
which should be set as shown in the
illustrations.
OFF: With the fuel cock in this
position, fuel will not flow.
Always set the fuel cock to this
position when the engine is not
running.
1. Arrow markON: With the fuel cock in this
position, fuel flows to the
carburettor. Set the fuel cock to
this position when starting the
engine and while riding.
INSTRUMENT AND CONTROL FUNCTIONS
3-6
CAUTION :
IT IS A GOOD PRACTICE TO RETURN THE FUEL COCK LEVER TO
"Off" POSITION WHEN ENGINE IS NOT RUNNING
OFF
1
1
ON

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
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