2004 YAMAHA YBR125 ESP

IX
ACCESSORIES AND LOADING
Adding accessories or cargo to your machine can adversely affect stability and handling if the weight distribution of the machine
is changed. To avoid the possibility of an accident, extreme caution should be used if adding cargo or accessories to your
machine.
Use extra care if riding a machine which has added cargo or acessories. Genuine Yamaha accessories have been specifically
designed for use on this machine. Since Yamaha cannot test all other accessories which may be available, you must personally
be responsible for the proper selection, installation and use of non-Yamaha accessories.
You should use extreme caution when selecting and installing any accessories. Keep in mind these guidelines for mounting
accessories in addition to those provided under ìLOADINGî.
1. Never install accessories or carry cargo that would impair the performance of your machine. Carefully inspect the accessory
before using it to make sure it does not in any way reduce ground clearance or cornering clearance, limit suspension travel,
steering travel or control operation, or obscure lights or reflectors.
a. Accessories fitted to the handlebar or the front fork area can create instability due to improper weight distribution or aerodynamic
changes. If accessories are added to the handlebar or front fork area, they must be as lightweight as possible and should be kept
to a minimum.
b. Bulky or large accessories may seriously affect the stability of the machine due to aerodynamic effects. Wind may
attempt to lift the machine, or the machine may become unstable in cross winds. These accessories may also cause instability
when being passed by or passing large vehicles.
c. Certain accessories can displace the operator from his or her normal riding position. This improper position limits the
freedom of movement of the operator and may limit control ability. Therefore such accessories are not recommended.
2. Caution must be used if adding electrical accessories. If these accessories exceed the capacity of the machineís electrical
system, an electric failure could result, which could cause a dangerous loss of lights or engine power.
IX
ACCESSORIES AND LOADING
Adding accessories or cargo to your machine can adversely affect stability and handling if the weight distribution of the machine
is changed. To avoid the possibility of an accident, extreme caution should be used if adding cargo or accessories to your
machine.
Use extra care if riding a machine which has added cargo or acessories. Genuine Yamaha accessories have been specifically
designed for use on this machine. Since Yamaha cannot test all other accessories which may be available, you must personally
be responsible for the proper selection, installation and use of non-Yamaha accessories.
You should use extreme caution when selecting and installing any accessories. Keep in mind these guidelines for mounting
accessories in addition to those provided under ìLOADINGî.
1. Never install accessories or carry cargo that would impair the performance of your machine. Carefully inspect the accessory
before using it to make sure it does not in any way reduce ground clearance or cornering clearance, limit suspension travel,
steering travel or control operation, or obscure lights or reflectors.
a. Accessories fitted to the handlebar or the front fork area can create instability due to improper weight distribution or aerodynamic
changes. If accessories are added to the handlebar or front fork area, they must be as lightweight as possible and should be kept
to a minimum.
b. Bulky or large accessories may seriously affect the stability of the machine due to aerodynamic effects. Wind may
attempt to lift the machine, or the machine may become unstable in cross winds. These accessories may also cause instability
when being passed by or passing large vehicles.
c. Certain accessories can displace the operator from his or her normal riding position. This improper position limits the
freedom of movement of the operator and may limit control ability. Therefore such accessories are not recommended.
2. Caution must be used if adding electrical accessories. If these accessories exceed the capacity of the machineís electrical
system, an electric failure could result, which could cause a dangerous loss of lights or engine power.

3-2
Turn indicator lights " "
The corresponding indicator fhashes when the turn
switch is moved to the ì ì or ì ì.
High beam indicator light "
"
This indicator comes on when the headlight high beam
is used.
Neutral indicator light " N "
This indicator comes on when the transmission is in
neutral. Indicator lights
1. Turn indicator lights " "
2. High beam indicator light " "
3. Neutral indicator light "N"
3-2
Turn indicator lights " "
The corresponding indicator fhashes when the turn
switch is moved to the ì ì or ì ì.
High beam indicator light "
"
This indicator comes on when the headlight high beam
is used.
Neutral indicator light " N "
This indicator comes on when the transmission is in
neutral. Indicator lights
1. Turn indicator lights " "
2. High beam indicator light " "
3. Neutral indicator light "N"

5-2 Starting a cold engine
1. Turn the fuel cock to ìONî.
2. Turn the main switch to ìONî and the engine stop switch
to ì ì.
3. Shift transmission into neutral.
NOTE:
When the transmission is in neutral, the neutral indicator
light should be on. If the light does not come on, ask a
Yamaha dealer to inspect it.
4. Fully open the starter (CHOKE) and completely close
the throttle grip.
5. Kick the starter to start the engine.
6. After starting the engine, turn back the starter to an
intermediate position.
NOTE:
To obtain maximum engine life and service, do not ever
thoroughly accelerate it while the engine is cold.
7. After warming up the engine, turn back the stater
(CHOKE) completely.
NOTE:
The engine is warm when it responds normally to the throttle
with the starter turned off.
Starting a warm engine
The starter lever is not required when the engine is warm.
CAUTION:
If the engine fails to start with the procedures above, try to
start again with the throttle grip opened 1/4 to 1/2.
Warming up the engine
For extended engine life always warm the engine up never
accelerate hard while the engine is cold. To check if engine
temperature is normal, rev the engine with the choke closed
and check to see if it responds normally.
CAUTION:
See the ìBreak-in sectionî prior to operating the motorcycle
for the first time.
5-2 Starting a cold engine
1. Turn the fuel cock to ìONî.
2. Turn the main switch to ìONî and the engine stop switch
to ì ì.
3. Shift transmission into neutral.
NOTE:
When the transmission is in neutral, the neutral indicator
light should be on. If the light does not come on, ask a
Yamaha dealer to inspect it.
4. Fully open the starter (CHOKE) and completely close
the throttle grip.
5. Kick the starter to start the engine.
6. After starting the engine, turn back the starter to an
intermediate position.
NOTE:
To obtain maximum engine life and service, do not ever
thoroughly accelerate it while the engine is cold.
7. After warming up the engine, turn back the stater
(CHOKE) completely.
NOTE:
The engine is warm when it responds normally to the throttle
with the starter turned off.
Starting a warm engine
The starter lever is not required when the engine is warm.
CAUTION:
If the engine fails to start with the procedures above, try to
start again with the throttle grip opened 1/4 to 1/2.
Warming up the engine
For extended engine life always warm the engine up never
accelerate hard while the engine is cold. To check if engine
temperature is normal, rev the engine with the choke closed
and check to see if it responds normally.
CAUTION:
See the ìBreak-in sectionî prior to operating the motorcycle
for the first time.

Torque specifications
Use a torque wrench to tighten these items. It is
recommended that these items be checked occasionally,
specially before a long trip. Always check the tightness of
these items whenever they are loosened for any reason.
6-5
Torque
Nm
kgf.m Item
Spark plug
Engine oil drain plug
Oil check bolt
Front wheel axle nut
Rear wheel axle nut
12,5
20
7
45
911,25
2,0
0,7
4,5
9,1
A
(Nut)
10 mm
12 mm
14 mm
17 mm
19 mm
22 mmB
(Bolt)
6 mm
8 mm
10 mm
12 mm
14 mm
16 mmGeneral torque especifications
Nm
6
15
30
55
85
130kgf.m
0,6
1,5
3,0
5,5
8,5
13,0lbf. ft
4,3
11
22
40
61
94
lbf.ft
9.0
14.5
5.0
32.5
66
Torque specifications
Use a torque wrench to tighten these items. It is
recommended that these items be checked occasionally,
specially before a long trip. Always check the tightness of
these items whenever they are loosened for any reason.
6-5
Torque
Nm
kgf.m Item
Spark plug
Engine oil drain plug
Oil check bolt
Front wheel axle nut
Rear wheel axle nut
12,5
20
7
45
911,25
2,0
0,7
4,5
9,1
A
(Nut)
10 mm
12 mm
14 mm
17 mm
19 mm
22 mmB
(Bolt)
6 mm
8 mm
10 mm
12 mm
14 mm
16 mmGeneral torque especifications
Nm
6
15
30
55
85
130kgf.m
0,6
1,5
3,0
5,5
8,5
13,0lbf. ft
4,3
11
22
40
61
94
lbf.ft
9.0
14.5
5.0
32.5
66

NOTE:
A diagnostic tachometer must be used for this procedure.
1. Attach the tachometer. Start the engine and warm it up
for a few minutes (normally, 1 or 2 minutes) at
approximately 1,000 to 2,000 r/min. Occasionally rev
the engine to 4,000 to 5,000 r/min. The engine is warm
when it quickly responds to the throttle.
2. Set the idle to the specified engine speed by adjusting
the throttle stop screw; turn the screw in to increase
engine speed and out to decrease engine speed.
NOTE:
If the specified idle speed cannot be obtained by performing
the above adjustment, consult a Yamaha dealer.
6-13
Standard idle speed:
1,300 ~ 1,400 r/min
1. Throttle stop screw
Idle speed adjustment
NOTE:
A diagnostic tachometer must be used for this procedure.
1. Attach the tachometer. Start the engine and warm it up
for a few minutes (normally, 1 or 2 minutes) at
approximately 1,000 to 2,000 r/min. Occasionally rev
the engine to 4,000 to 5,000 r/min. The engine is warm
when it quickly responds to the throttle.
2. Set the idle to the specified engine speed by adjusting
the throttle stop screw; turn the screw in to increase
engine speed and out to decrease engine speed.
NOTE:
If the specified idle speed cannot be obtained by performing
the above adjustment, consult a Yamaha dealer.
6-13
Standard idle speed:
1,300 ~ 1,400 r/min
1. Throttle stop screw
Idle speed adjustment

6-21 Drive chain lubrication
The chain consists of many parts which work with each
other. If the chain is not maintained properly, it will wear out
quickly. Therefore, the chain must be serviced regularly.
This service is especially necessary when riding in dusty
areas.
1. Use Yamaha Chain and Cable Lube or any
brands of spray-type chain lubricant. First,
remove all dirt and mud from the chain with a
brush or cloth, then spray lubricant between both
rows of side plates and on all center rollers. The
chain should be lubricated every 500 km (300 mi).
2. To clean the chain, remove it from the machine,
dip it in solvent, and clean out as much dirt as
possible. Take the chain out of the solvent and
dry it. Immediately lubricate the chain to prevent
it from rusting.Cable inspection and lubrication
Damage to the outer housing of cables may allow
internal rusting and cause interfere with cable
movement. Replace damaged cables as soon as
possible to prevent unsafe conditions.
Lubricate the inner cable and the cable end. If it does not
operate smoothly, ask a Yamaha dealer to replace them.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
WARNING:
6-21 Drive chain lubrication
The chain consists of many parts which work with each
other. If the chain is not maintained properly, it will wear out
quickly. Therefore, the chain must be serviced regularly.
This service is especially necessary when riding in dusty
areas.
1. Use Yamaha Chain and Cable Lube or any
brands of spray-type chain lubricant. First,
remove all dirt and mud from the chain with a
brush or cloth, then spray lubricant between both
rows of side plates and on all center rollers. The
chain should be lubricated every 500 km (300 mi).
2. To clean the chain, remove it from the machine,
dip it in solvent, and clean out as much dirt as
possible. Take the chain out of the solvent and
dry it. Immediately lubricate the chain to prevent
it from rusting.Cable inspection and lubrication
Damage to the outer housing of cables may allow
internal rusting and cause interfere with cable
movement. Replace damaged cables as soon as
possible to prevent unsafe conditions.
Lubricate the inner cable and the cable end. If it does not
operate smoothly, ask a Yamaha dealer to replace them.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
WARNING:

7-2 B. STORAGE
Long term storage (30 days or more) of your machine will
require some preventive procedures to guard against
deterioration. After thoroughly cleaning the machine,
prepare for storage as follows:
1. Drain the fuel tank, fuel lines, and carburetor float
bowl(s).
2. Remove the spark plug(s), pour about one tablespoon
of SAE 20W50 motor oil in the spark plug hole(s) and
reinstall the spark plug(s).
Kick the engine over several times (with the
ignition off) to coat the cylinder walls with oil.
3. Remove the drive chain. Clean it thoroughly with
solvent and lubricate it.
Reinstall the chain or store it in a plastic bag
(tied to frame for safe-keeping).
4. Lubricate all control cables.
5. Block up the frame to raise both wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet to
prevent moisture from entering.7. If storing in a humid or salt-air atmosphere, coat
all exposed metal surfaces with a light film of
oil. Do not apply oil to any rubber parts or the
seat cover.
8. Remove the battery and charge it. Store it in a dry place
and recharge it once a month. Do not store the battery
in an excessively warm or cold place (less than 0∫C
(30∫F) or more than 30∫C (90∫F).
NOTE:
Make any necessary repairs before storing the machine.
7-2 B. STORAGE
Long term storage (30 days or more) of your machine will
require some preventive procedures to guard against
deterioration. After thoroughly cleaning the machine,
prepare for storage as follows:
1. Drain the fuel tank, fuel lines, and carburetor float
bowl(s).
2. Remove the spark plug(s), pour about one tablespoon
of SAE 20W50 motor oil in the spark plug hole(s) and
reinstall the spark plug(s).
Kick the engine over several times (with the
ignition off) to coat the cylinder walls with oil.
3. Remove the drive chain. Clean it thoroughly with
solvent and lubricate it.
Reinstall the chain or store it in a plastic bag
(tied to frame for safe-keeping).
4. Lubricate all control cables.
5. Block up the frame to raise both wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet to
prevent moisture from entering.7. If storing in a humid or salt-air atmosphere, coat
all exposed metal surfaces with a light film of
oil. Do not apply oil to any rubber parts or the
seat cover.
8. Remove the battery and charge it. Store it in a dry place
and recharge it once a month. Do not store the battery
in an excessively warm or cold place (less than 0∫C
(30∫F) or more than 30∫C (90∫F).
NOTE:
Make any necessary repairs before storing the machine.