YAMAHA YBR125 2004 Owner's Manual

The front brake lever is located on the right handlebar. Pull
it toward the handlebar to apply the front brake.
3-7The rear brake pedal is on the right side of the motorcycle.
Press down on the brake pedal to apply the rear brake.
Front brake lever Rear brake pedal
1. Front brake lever1. Rear brake pedal
The front brake lever is located on the right handlebar. Pull
it toward the handlebar to apply the front brake.
3-7The rear brake pedal is on the right side of the motorcycle.
Press down on the brake pedal to apply the rear brake.
Front brake lever Rear brake pedal
1. Front brake lever1. Rear brake pedal

Fuel tank cap
3-8TO 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.
Be sure the cap is properly installed and locked in place
before riding the motorcycle.
WARNING:
Fuel tank cap
3-8TO 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.
Be sure the cap is properly installed and locked in place
before riding the motorcycle.
WARNING:

Fuel cock
3-9The fuel cock supplies fuel from the tank to the carburetor
while filtering it also.
The fuel cock has three positions:
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.
ON: With the fuel cock in this position, fuel flows to the
carburetor. Set the fuel cock to this position when
starting the engine and while riding.
RES: 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
fuel cock back to ìONî after refueling!
Fuel cock
3-9The fuel cock supplies fuel from the tank to the carburetor
while filtering it also.
The fuel cock has three positions:
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.
ON: With the fuel cock in this position, fuel flows to the
carburetor. Set the fuel cock to this position when
starting the engine and while riding.
RES: 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
fuel cock back to ìONî after refueling!

Starting a cold engine requires a richer air-fuel mixture. A
separate starter circuit supplies the mixture.
Pull the starter knob up to open the circuit for starting. When
the engine has warmed up, push the knob down to close
the circuit.
3-10 Starter lever
Rotate the kick starter away from the engine. Push the starter
down lightly with your foot until the gears engage, then kick
smoothly and forcefully to start the engine.
Shift to neutral before starting.
Kick starter
1. Starter lever
1. Kick starter
Starting a cold engine requires a richer air-fuel mixture. A
separate starter circuit supplies the mixture.
Pull the starter knob up to open the circuit for starting. When
the engine has warmed up, push the knob down to close
the circuit.
3-10 Starter lever
Rotate the kick starter away from the engine. Push the starter
down lightly with your foot until the gears engage, then kick
smoothly and forcefully to start the engine.
Shift to neutral before starting.
Kick starter
1. Starter lever
1. Kick starter

3-11
1. Push 2. Release 3. Turn
LOCK OFF (PUSH)
Steering lock
The steering is locked when the main switch is turned to
ìLOCKî. To lock the steering, turn the handlebars all the
way to the left. With the key at ìOFFî position, push it into
the main switch and release it, turn it counterclockwise to
ìLOCKî, and remove the key. To release the lock, turn the
key to ìOFFî.
Never turn the key to “LOCK” position when the
motorcycle is moving.
WARNING:
3-11
1. Push 2. Release 3. Turn
LOCK OFF (PUSH)
Steering lock
The steering is locked when the main switch is turned to
ìLOCKî. To lock the steering, turn the handlebars all the
way to the left. With the key at ìOFFî position, push it into
the main switch and release it, turn it counterclockwise to
ìLOCKî, and remove the key. To release the lock, turn the
key to ìOFFî.
Never turn the key to “LOCK” position when the
motorcycle is moving.
WARNING:

3-12To remove the seat, remove the side covers (see page 3-
13), then remove the bolts and release the lobe from the
rear portion of the frame.
To reinstall the seat, insert the lobe into the receptacle on
the frame, then tighten the bolts.
Reinstall the side covers. Seat
3-12To remove the seat, remove the side covers (see page 3-
13), then remove the bolts and release the lobe from the
rear portion of the frame.
To reinstall the seat, insert the lobe into the receptacle on
the frame, then tighten the bolts.
Reinstall the side covers. Seat

Insert the key and turn it 1/4 clockwise. Pull the cover
towards yourself 1 to release the fitting pin, and then, pull
it forward 2.
To reinstall, reverse the removal procedures.
3-13Remove the key nad then pull the cover towards yourself
1 to release the fitting pin, and then, pull it forward 2.
To reinstall, reverse the removal procedures.
Side covers
1. Pull 2. Pull forward1. Pull 2. Pull forward
Insert the key and turn it 1/4 clockwise. Pull the cover
towards yourself 1 to release the fitting pin, and then, pull
it forward 2.
To reinstall, reverse the removal procedures.
3-13Remove the key nad then pull the cover towards yourself
1 to release the fitting pin, and then, pull it forward 2.
To reinstall, reverse the removal procedures.
Side covers
1. Pull 2. Pull forward1. Pull 2. Pull forward

3-14 Rear shock absorber adjustment
1. Spring preload adjusting ring 2.Position indicator
Each shock absorber is equipped with a spring preload
adjusting ring. Adjust spring preload as follows.
Turn the adjusting ring in direction a to increase spring
preload and in direction b to decrease spring preload. Make
sure that the appropriate notch in the adjusting ring is aligned
with the position indicator on the rear shock absorber.
Always adjust each shock absorber to the same setting.
Uneven adjustment can cause poor handling and loss of
stability.
1234
56
7 Adjusting
position
SoftStandard
Hard
CAUTION:
3-14 Rear shock absorber adjustment
1. Spring preload adjusting ring 2.Position indicator
Each shock absorber is equipped with a spring preload
adjusting ring. Adjust spring preload as follows.
Turn the adjusting ring in direction a to increase spring
preload and in direction b to decrease spring preload. Make
sure that the appropriate notch in the adjusting ring is aligned
with the position indicator on the rear shock absorber.
Always adjust each shock absorber to the same setting.
Uneven adjustment can cause poor handling and loss of
stability.
1234
56
7 Adjusting
position
SoftStandard
Hard
CAUTION:

PRE-OPERATION CHECKS
Before using this motorcycle, check the following points:
ITEM ROUTINE
PAGE
Check operation, condition and free play.
Adjust if necessary
Clutch
Throttle grip / cableCheck for smooth operation.
Lubricate / Adjust if necessary
Check oil level / add oil as necessary
Engine oil
Drive chainCheck chain slack and condition. Lubricate if necessary
Adjust if necessary.
Air filter
Control and meter cableCheck tire pressure, wear, damage and spoke tightness
Check for smooth operation.
Lubricate if necessary6-16 ~ 6-18
6-14 , 6-22
4-3 , 6-6 , 6-9
6-19 ~ 6-21
6-10 ~ 6-11
4-3 ~ 4-6 , 6-31~ 6-33
6-21 Check operation, condition and free play.
Adjust if necessary
Wheels / Tires
Clean and oil it frequently.6-18 Brakes
4-1
PRE-OPERATION CHECKS
Before using this motorcycle, check the following points:
ITEM ROUTINE
PAGE
Check operation, condition and free play.
Adjust if necessary
Clutch
Throttle grip / cableCheck for smooth operation.
Lubricate / Adjust if necessary
Check oil level / add oil as necessary
Engine oil
Drive chainCheck chain slack and condition. Lubricate if necessary
Adjust if necessary.
Air filter
Control and meter cableCheck tire pressure, wear, damage and spoke tightness
Check for smooth operation.
Lubricate if necessary6-16 ~ 6-18
6-14 , 6-22
4-3 , 6-6 , 6-9
6-19 ~ 6-21
6-10 ~ 6-11
4-3 ~ 4-6 , 6-31~ 6-33
6-21 Check operation, condition and free play.
Adjust if necessary
Wheels / Tires
Clean and oil it frequently.6-18 Brakes
4-1

4-2 NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be thoroughly accomplished
in a very short time; and the added safety it assures is more than worth the time involved. If any maintenance service or
adjustment is needed, consult the chart above to refer to the pages in which the service or adjustment is described.
1. The engine, exhaust pipe, and muffler will be very hot after the engine has been run.
Be careful not to touch them or to allow any clothing item to contact them during inspection or repair.
2. If any item is not working properly, have it inspected and repaired before operating the motorcycle.
ITEMROUTINE
PAGE
Sidestand
Fittings / FastenersCheck all chassi fittings and fasteners.
Tighten / Adjust, if necessary
Check fuel level / top up as required.
Fuel tank
Lights, signals and switches
BatteryCheck electrolyte level.
Replenish with ìdistilled waterî if necessary.6-22
4-6 , 6-5
4-6 , 6-28 ~ 6-30
6-25 ~ 6-276-22
4-7
Check for proper operation
Front brake and clutch
lever pivotsCheck for smooth operation.
Lubricate if necessary
Check for smooth operation.
Lubricate if necessary
6-22 Check for smooth operation.
Lubricate if necessary Rear brake and shift pedal
shafts
WARNING:
4-2 NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be thoroughly accomplished
in a very short time; and the added safety it assures is more than worth the time involved. If any maintenance service or
adjustment is needed, consult the chart above to refer to the pages in which the service or adjustment is described.
1. The engine, exhaust pipe, and muffler will be very hot after the engine has been run.
Be careful not to touch them or to allow any clothing item to contact them during inspection or repair.
2. If any item is not working properly, have it inspected and repaired before operating the motorcycle.
ITEMROUTINE
PAGE
Sidestand
Fittings / FastenersCheck all chassi fittings and fasteners.
Tighten / Adjust, if necessary
Check fuel level / top up as required.
Fuel tank
Lights, signals and switches
BatteryCheck electrolyte level.
Replenish with ìdistilled waterî if necessary.6-22
4-6 , 6-5
4-6 , 6-28 ~ 6-30
6-25 ~ 6-276-22
4-7
Check for proper operation
Front brake and clutch
lever pivotsCheck for smooth operation.
Lubricate if necessary
Check for smooth operation.
Lubricate if necessary
6-22 Check for smooth operation.
Lubricate if necessary Rear brake and shift pedal
shafts
WARNING: