2003 YAMAHA YBR125 battery

Storage the battery
1. When the motorcycle is not used for a month or longer,
remove the battery and store it in a cool, dark place.
Completely recharge the battery before reinstallation.
2. If the baterry needs to be stored for a longer period
than the period mentioned above, check the specific
gravity at least once a month, and recharge it when the
specific gravity is below normal.
3. Always make sure the connections are correct when
reinstalling the battery. The red (positive) lead is for the
+ terminal and the black (negative) lead is for the -
terminal. Always connect the red (positive) lead first,
then connect the black (negative) lead. Make sure that
the battery breather pipe is correctly routed, free of
obstructions, and in good condition.
6-29
2
1
If a fuse is blown, turn off the ignition switch and the switch
of the circuit in question. Install a new fuse of proper
amperage. Turn on the switches and see if the electrical
device operates. If the fuse immediately blows again,
consult a Yamaha dealer.
WARNING:
Do not use fuses of higher amperage rating than those
recommended. Substitution of a fuse of improper rating
can cause extensive electrical system damage and
possibly a fire.
FUSE CAPACITY:10 A Fuse replacement
1. Fuse 2. Reserve
CAUTION:
Storage the battery
1. When the motorcycle is not used for a month or longer,
remove the battery and store it in a cool, dark place.
Completely recharge the battery before reinstallation.
2. If the baterry needs to be stored for a longer period
than the period mentioned above, check the specific
gravity at least once a month, and recharge it when the
specific gravity is below normal.
3. Always make sure the connections are correct when
reinstalling the battery. The red (positive) lead is for the
+ terminal and the black (negative) lead is for the -
terminal. Always connect the red (positive) lead first,
then connect the black (negative) lead. Make sure that
the battery breather pipe is correctly routed, free of
obstructions, and in good condition.
6-29
2
1
If a fuse is blown, turn off the ignition switch and the switch
of the circuit in question. Install a new fuse of proper
amperage. Turn on the switches and see if the electrical
device operates. If the fuse immediately blows again,
consult a Yamaha dealer.
WARNING:
Do not use fuses of higher amperage rating than those
recommended. Substitution of a fuse of improper rating
can cause extensive electrical system damage and
possibly a fire.
FUSE CAPACITY:10 A Fuse replacement
1. Fuse 2. Reserve
CAUTION:

6-37Never check the fuel system while smoking or in the
vicinity of an open flame.
Check if there is
fuel in the fuel tank
Use electric
starter
Remove spark
plug and check
electrode
Use electric starter 1. Fuel
2. Compression
3. Ignition
4. BatteryEnough fuel
No fuel
There is compression
No compression
Wet
Dry
Engine turns
over quickly
Engine turns
over slowlySupply fuel
Go to ignition check
Ask Yamaha dealer to inspect
Wipe clean with dry cloth and correct
spark plug gap or replace spark plugs
Ask Yamaha dealer to inspect
Battery good
Check fluid,
recharge and check
connections
Troubleshooting chart
Go to compression
check
Engine doesn’t start, go
to compression check
Open the throttle hal-way
and start the engine
Engine doesn’t start, ask
Yamaha dealer to inspect.Engine doesn’t start,
go to battery check
WARNING:
6-37Never check the fuel system while smoking or in the
vicinity of an open flame.
Check if there is
fuel in the fuel tank
Use electric
starter
Remove spark
plug and check
electrode
Use electric starter 1. Fuel
2. Compression
3. Ignition
4. BatteryEnough fuel
No fuel
There is compression
No compression
Wet
Dry
Engine turns
over quickly
Engine turns
over slowlySupply fuel
Go to ignition check
Ask Yamaha dealer to inspect
Wipe clean with dry cloth and correct
spark plug gap or replace spark plugs
Ask Yamaha dealer to inspect
Battery good
Check fluid,
recharge and check
connections
Troubleshooting chart
Go to compression
check
Engine doesn’t start, go
to compression check
Open the throttle hal-way
and start the engine
Engine doesn’t start, ask
Yamaha dealer to inspect.Engine doesn’t start,
go to battery check
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).
Crank 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 0ºC
(30ºF) or more than 30ºC (90ºF).
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).
Crank 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 0ºC
(30ºF) or more than 30ºC (90ºF).
NOTE:
Make any necessary repairs before storing the machine.

8-4
MODEL YBR 125ED
Brakes:
Front brake type Single, Disc brake
Operation Right hand operation
Rear brake type Drum brake
Operation Right foot operation
Suspension:
Front Telescopic fork
Rear Swingarm (New monocross suspension)
Shock absorber:
Front Coil spring, Oil damper
Rear Gas, Coil spring, Oil damper
Front 120 mm ( 5.0 in)
Rear 105 mm ( 4.0 in)
Electrical:
Ignition system CDI
Generator system AC Magneto generator
Battery type / capacity 12N 5.5-3B / 12V 5.5 Ah
8-4
MODEL YBR 125ED
Brakes:
Front brake type Single, Disc brake
Operation Right hand operation
Rear brake type Drum brake
Operation Right foot operation
Suspension:
Front Telescopic fork
Rear Swingarm (New monocross suspension)
Shock absorber:
Front Coil spring, Oil damper
Rear Gas, Coil spring, Oil damper
Front 120 mm ( 5.0 in)
Rear 105 mm ( 4.0 in)
Electrical:
Ignition system CDI
Generator system AC Magneto generator
Battery type / capacity 12N 5.5-3B / 12V 5.5 Ah