2007 YAMAHA YBR250 ignition

TABLE OF CONTENTESSAFETY INFORMATION .................... 1-1
DESCRIPTION ................................... 2-1Left view ........................................ 2 - 1
Right view ...................................... 2 - 2
Controls and instruments ............. 2 - 3
INSTRUMENT AND CONTROL
FUNCTIONS ....................................... 3-1 Main switch/steering lock ............. 3 - 1
Indicator and warning lights ........ 3 - 2
Speedometer ................................. 3 - 2
Tachometer .................................... 3 - 3
Multi-function display ................... 3 - 3
Handlebar switches ...................... 3 - 4
Clutch lever ................................... 3 - 5
Shift pedal ..................................... 3 - 6
Brake lever .................................... 3 - 6
Brake pedal ................................... 3 - 6
Fuel tank cap ................................. 3 - 7
Fuel ................................................ 3 - 7
Catalytic converter ........................ 3 - 8
Seat ................................................ 3 - 9
Helmet holder ................................ 3 - 9
Storage compartment .................3-10
Adjusting the shock aborber
assemblies ............................... 3-10
Luggage strap holders ...............3-11
Sidestand ..................................... 3-11
Ignition circuit cut-off system .....3-12 PRE-OPERATION CHECKS .............. 4-1
Pre-operation check list ............... 4 - 2
OPERATION AND IMPORTANT
RIDING POINTS ................................. 5-1 Starting the engine ....................... 5 - 1
Shifting ........................................... 5 - 2
Tips for reducing fuel
consumption .............................. 5 - 3
Engine break-in ............................ 5 - 3
Parking .......................................... 5 - 4
PERIODIC MAINTENANCE AND
MINOR REPAIR .................................. 6-1 Owner’s tool kit .............................. 6 - 1
Periodic maintenance and lubrication chart ......................... 6 - 2
Removing and installing the cowling and panels ................... 6 - 6
Checking the spark plug .............. 6 - 7
Engine oil and oil filter element ... 6-8
Cleaning the air filter element ... 6-11
Checking the engine idling
speed ........................................ 6-12
Checking the throttle cable free play .................................... 6-12
Valve clearance .. ........................6-12
Tires ............................................. 6-13
Cast wheels ................................. 6-15
Adjusting the clutch lever free play .................................... 6-15Adjusting the brake pedal
position and free play .............6-16
Adjusting the rear brake light switch ........................................ 6-17
Checking the front brake pads
and rear brake shoes ..............6-17
Checking the front brake fluid level .......................................... 6-18
Changing the brake fluid ...........6-18
Drive chain slack ........................6-19
Cleaning and lubricating the
drive chain ............................... 6-20
Checking and lubricating the cables ....................................... 6-21
Checking and lubricating the throttle grip and cable .............6-21
Checking and lubricating the
brake and clutch levers ...........6-21
Checking and lubricating the brake and shift pedals ............6-22
Checking and lubricating the sidestand .................................. 6-22
Lubricating the rear
suspension .............................. 6-23
Checking the front fork ...............6-23
Checking the steering ................6-24
Checking the wheel bearings ....6-24
Battery .......................................... 6-24
Replacing the fuses ....................6-26
Replacing the headlight bulb ....6-27
Replacing a turn signal light bulb or the tail/brake light bulb .......6-28
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3-1
3
INSTRUMENT AND CONTROL FUNCTIONS
EAU10460
Main switch/steering lockThe main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
OFF ON
LOCK
EAU10570
ON
All electrical circuits are supplied with
power; the meter lighting, taillight and
auxiliary ligth come on, and the engine
can be started. The key cannot be
removed.The headlight comes on automatically
when the engine is started and stays
on until the key is turned to “OFF”
EAU10660
OFF
All electrical systems are off. The key
can be removed.
EAU10680
LOCK
The steering is locked, and all electrical
systems are off. The key can be
removed.To loc
k the steer
ing
1. Turn the handlebars all the way to the left.
2. Push the key in from the “OFF” position, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.
1. Push
2. Turn
To unloc
k the steer
ing
Push the key in, and then turn it to “OFF”
while still pushing it.
1. Push
2. Turn
EWA10060
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
sure that the vehicle is stopped before
turning the key to “OFF” or “LOCK”.
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3-5
3
INSTRUMENT AND CONTROL FUNCTIONS
EAU12350
Pass switch “
”
Press this switch to flash the headlight.
EAU12400
Dimmer switch “
/
”
Set this switch to “
” for the high beam
and to “
” for the low beam.
EAU12460
Turn signal switch “
/
”
To signal a right-hand turn, push this
switch to “
”. To signal a left-hand turn,
push this switch to “
”. When released,
the switch returns to the center position.
To cancel the turn signal lights, push the
switch in after it has returned to the
center position.
EAU12500
Horn switch “
”
Press this switch to sound the horn.
EAU12660
Engine stop switch “
/
”
Set this switch to “
” before starting
the engine. Set this switch to “
” to stop
the engine in case of an emergency, such
as when the motorcycle overturns or
when the throttle cable is stuck.EAU12710
Start switch “
”
Push this switch to crank the engine with
the starter.
ECA10050
See page 5-1 for starting instructions
prior to starting the engine.
EAU12820
Clutch lever1. Clutch leverThe clutch lever is located at the left
handlebar grip. To disengage the clutch,
pull the lever toward the handlebar grip.
To engage the clutch, release the lever.
The lever should be pulled rapidly and
released slowly for smooth clutch
operation.
The clutch lever is equipped with a clutch
switch, which is part of the ignition circuit
cut-off system. (See page 3-12.)
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3-11
3
INSTRUMENT AND CONTROL FUNCTIONS
EWA10210
Always adjust both shock absorber
assemblies equally, otherwise poor
handling and loss of stability may
result.To increase the spring preload and
thereby harden the suspension, turn the
adjusting ring on each shock absorber
assembly in direction (a). To decrease
the spring preload and thereby soften
the suspension, turn the adjusting ring
on each shock absorber assembly in
direction (b).Align the appropriate notch in the
adjusting ring with the position indicator
on the shock absorber.Spring preload setting:Minimum (soft): 1
Standard:
3
Maximum (hard): 5
EAU36700
Luggage strap holders1. Luggage strap holderThere are four luggage strap holders on
the bottom of the seat. To use the strap
holders, remove the seat, unhook the
straps from the hooks, and then install
the seat with the straps hanging out from
under the seat. (See page 3-9.)
EAU15301
SidestandThe sidestand is located on the left side
of the frame. Raise the sidestand or lower
it with your foot while holding the
motorcycle upright.The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See further down for an explanation of
the ignition circuit cut-off system.)
EWA10240
The vehicle must not be ridden with
the sidestand down, or if the
sidestand cannot be properly moved
up (or does not stay up), otherwise
the sidestand could contact the
ground and distract the operator,
resulting in a possible loss of control.
Yamaha’s ignition circuit cut-off
system has been designed to assist
the operator in fulfilling the
responsibility of raising the sidestand
before starting off. Therefore, check
this system regularly as described
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3-12
3
INSTRUMENT AND CONTROL FUNCTIONSbelow and have a Yamaha dealer
repair it if it does not function
properly.
EAU15311
Ignition circuit cut-off systemThe ignition circuit cut-off system
(comprising the sidestand switch, clutch
switch and neutral switch) has the
following functions. It prevents starting when the transmission is in gear and the
sidestand is up, but the clutch lever
is not pulled.
 It prevents starting when the transmission is in gear and the
clutch lever is pulled, but the
sidestand is still down.
 It cuts the running engine when the transmission is in gear and the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.
EWA10250
If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
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5-1
5
OPERATION AND IMPORTANT RIDING POINTS
EAU15950
EWA10270
l
l l
l
l
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or function
that you do not thoroughly
understand.
l
l l
l
l
Never start the engine or operate
it in a closed area for any length
of time. Exhaust fumes are
poisonous, and inhaling them
can cause loss of
consciousness and death within
a short time. Always make sure
that there is adequate
ventilation.
l
l l
l
l
Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised
completely, it could contact the
ground and distract the operator,
resulting in a possible loss of
control.
EAUW0090
Starting the engineIn order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:l
The transmission is in the neutral
position.
l
The transmission is in gear with the
clutch lever pulled and the
sidestand up.
EWA10290
l
l l
l
l
Before starting the engine, check
the function of the ignition
circuit cut-off system according
to the procedure described on
page 3-12.
l
l l
l
l
Never ride with the sidestand
down.
1. Turn the key to “ON” and make sure
that the engine stop switch is set
to “
”.
ECAW0041
l
l l
l
l
The engine trouble warning light
should come on for a few
seconds, then go off. If the warning light does not go off,
ask a Yamaha dealer to check the
motorcycle.
l
l l
l
l
The speedometer needle will
sweep across the speed range
and then return to zero. The
tachometer needle will sweep
across the r/min range and then
return to zero. If either needle
does not sweep across their
ranges, ask a Yamaha dealer to
check the motorcycle.
2. Shift the transmission into the
neutral position.When the transmission is in the neutral
position, the neutral indicator light should
be on, otherwise have a Yamaha dealer
check the electrical circuit.3. Start the engine by pushing thestart switch.If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to
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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.
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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.
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