2007 YAMAHA YBR250 light

6-26
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23624
Replacing the fusesThe main fuse and the fuse box, which
contains the fuses for the individual
circuits, are located under the seat. (See
page 3-9.)
20
1
2
1. Main fuse
2. Spare fuse1. Fuse box cover
2. Headlight fuse
3. Signaling system fuse
4. Fuel injection and ignition fuse
5. Display backup fuse
6. Spare fuse
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage.Specified fuses:
Main fuse:20.0 A
Headlight fuse: 10.0 A
Signaling system fuse:
10.0 A
Ignition and fuel injection fuse: 10.0 A
Backup fuse: 10.0 A
Spare fuses:
10.0 A and 20.0 A
ECA10640
Do not use a fuse of a higher
amperage rating than recommended
to avoid causing extensive damage
to the electrical system and possibly
a fire.3. Turn the key to “ON” and turn on
the electrical circuit in question to check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer check
the electrical system.
cap 6.pmd 24/1/2007, 14:38
26

6-27
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23780
Replacing the headlight bulbThis model is equipped with a quartz
bulb headlight. If the headlight bulb burns
out, replace it as follows.1. Remove the headlight unit by removing the screws.
1
1. Screw2. Disconnect the headlight coupler,and then remove the bulb cover.
2
1
1. Headlight coupler
2. Bulb cover
3. Remove the headlight bulb holder
by turning it counterclockwise, and
then remove the defective bulb.1.Headlight bulb holder
EWA10790
Headlight bulbs get very hot.
Therefore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.4. Place a new headlight bulb intoposition, and then secure it with
the bulb holder.
ECA10660
Do not touch the glass part of the
headlight bulb to keep it free from oil,
otherwise the transparency of the
glass, the luminosity of the bulb, and
the bulb life will be adversely affected.
Thoroughly clean off any dirt and
fingerprints on the headlight bulb
using a cloth moistened with alcohol
or thinner.1. Do not touch the glass part of the bulb5. Install the headlight bulb cover, andthen connect the coupler.
6. Install the headlight unit by installing the screws
7. Have a Yamaha dealer adjust the headlight beam if necessary.
cap 6.pmd 24/1/2007, 14:38
27

6-28
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU24281
Replacing a turn signal light
bulb or the tail/brake light
bulb1. Remove the lens by removing thescrews.
1
1.Screw
1
1. Screw2. Remove the defective bulb bypushing it in and turning it
counterclockwise. 3. Insert a new bulb into the socket,
push it in, and then turn it clockwise
until it stops.
4. Install the lens by installing the screws.
ECA10680
Do not overtighten the screws,
otherwise the lens may break.
EAU37270
Replacing the auxiliary light
bulb
1
1. Auxiliary light bulbIf the auxiliary light bulb burns out,
replace it as follows.1. Remove the headlight unit by removing the screws.
2. Remove the socket (together with the bulb) by pulling it out.
3. Remove the defective bulb by pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the bulb) by pushing it in.
6. Install the headlight unit by installing the screws.
cap 6.pmd 24/1/2007, 14:38
28

6-31
6
PERIODIC MAINTENANCE AND MINOR REPAIR
7. Push the wheel forward, and thenremove the drive chain from the
rear sprocket.The drive chain does not need to be
disassembled in order to remove and
install the wheel.8. Remove the wheel.
EAUW0170
To install the rear wheel1. Insert the wheel axle from the left- hand side, and then install the drive
chain onto the rear sprocket.
2. Install the axle nut.
3. Install the brake rod onto the brake camshaft lever, and then install the
brake pedal free play adjusting nut. 4. Connect the brake torque rod to the
brake shoe plate by installing the
bolt and the nut, and then tighten
the nut to the specified torque.
Tightening torque:Brake torque rod nut: 49 Nm (4.9 m.kgf, 36 ft.lbt)5. Adjust the drive chain slack. (See
page 6-19.)
6. Lower the rear wheel so that it is on the ground.
7. Tighten the axle nut to the specified torque.Tightening torque:Axle nut: 104 Nm (10.4 m.kgf, 77 ft.lbt)8. Adjust the brake pedal position and
free play. (See page 6-16)
EWA10660
After adjusting the brake pedal free
play, check the operation of the brake
light.
EAU25850
TroubleshootingAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems
yourself. However, should your
motorcycle require any repair, take it to
a Yamaha dealer, whose skilled
technicians have the necessary tools,
experience, and know-how to service the
motorcycle properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like
Yamaha parts, but they are often inferior,
have a shorter service life and can lead
to expensive repair bills.
cap 6.pmd 24/1/2007, 14:38
31

7-1MOTORCYCLE CARE AND STORAGE
7
EAU26001
CareWhile the open design of a motorcycle
reveals the attractiveness of the
technology, it also makes it more
vulnerable. Rust and corrosion can
develop even if high-quality components
are used. A rusty exhaust pipe may go
unnoticed on a car, however, it detracts
from the overall appearance of a
motorcycle. Frequent and proper care
does not only comply with the terms of
the warranty, but it will also keep your
motorcycle looking good, extend its life
and optimize its performance.
Before cleaning1. Cover the muffler outlet with a plastic bag after the engine has
cooled down.
2. Make sure that all caps and covers as well as all electrical couplers
and connectors, including the spark
plug cap, are tightly installed.
3. Remove extremely stubborn dirt, like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets, sprockets, the drive chain and
wheel axles. Always rinse the dirt
and degreaser off with water.
Cleaning
ECA10770
l
l l
l
l
Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the
affected area any longer than
instructed. Also, thoroughly
rinse the area off with water,
immediately dry it, and then
apply a corrosion protection
spray.
l
l l
l
l
Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use only
a soft, clean cloth or sponge with
mild detergent and water to
clean plastic.
l
l l
l
l
Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
cleaning products, solvent or thinner, fuel (gasoline), rust
removers or inhibitors, brake
fluid, antifreeze or electrolyte.
l
l l
l
l
Do not use high-pressure
washers or steam-jet cleaners
since they cause water seepage
and deterioration in the
following areas: seals (of wheel
and swingarm bearings, fork
and brakes), electric
components (couplers,
connectors, instruments,
switches and lights), breather
hoses and vents.
l
l l
l
l
For motorcycles equipped with
a windshield: Do not use strong
cleaners or hard sponges as
they will cause dulling or
scratching. Some cleaning
compounds for plastic may
leave scratches on the
windshield. Test the product on
a small hidden part of the
windshield to make sure that it
does not leave any marks. If the
windshield is scratched, use a
quality plastic polishing
compound after washing.
cap 7.pmd 24/1/2007, 14:38
1

8-3
SPECIFICATIONS
8
Headlight:Bulb type:Halogen bulbBulb voltage, wattage x quantityHeadlight: 12 V, 35 W/35.0 W x 1
Tail brake light: 12 V, 5.0 W/21.0 W x 1
Front turn signal light:
12 V, 10.0 W x 2
Rear turn signal light:
12 V, 10.0 W x 2
Position light: 12 V, 5.0 W
Meter lighting:
14 V, 2.0 W x 2
Neutral indicator light:
14 V, 1.4 W x 1
Turn signal indicator light: 14 V, 1.4 W x 2
High beam indicator light:
14 V, 1.4 W x 1
Engine trouble warning light:
LEDFuses:Main fuse:20.0 A
Headlight fuse: 10.0 A
Signaling system fuse:
10.0 A
Ignition and fuel injection fuse:
10.0 A Backup fuse:
10.0 A
Spare fuses:
10.0 A and 20.0 A
cap 8.pmd 24/1/2007, 14:38
3