2007 YAMAHA YBR250 suspension

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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1-3
1
SAFETY INFORMATION
as possible on both sides of the
motorcycle to minimize imbalance
or instability.
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Shifting weights can create a
sudden imbalance. Make sure that
accessories and cargo are securely
attached to the motorcycle before
riding. Check accessory mounts
and cargo restraints frequently.
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Never attach any large or heavy
items to the handlebar, front fork,
or front fender. These items,
including such cargo as sleeping
bags, duffel bags, or tents, can
create unstable handling or a slow
steering response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this motorcycle. Since Yamaha cannot
test all other accessories that may be
available, you must personally be
responsible for the proper selection,
installation and use of non-Yamaha
accessories. Use extreme caution when
selecting and installing any accessories.
Keep the following guidelines in mind,
as well as those provided under“Loading” when mounting accessories.
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Never install accessories or carry
cargo that would impair the
performance of your motorcycle.
Carefully inspect the accessory
before using it to make sure that 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.lAccessories 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.lBulky or large accessories may
seriously affect the stability of the
motorcycle due to aerodynamic
effects. Wind may attempt to lift
the motorcycle, or the motorcycle
may become unstable in cross
winds. These accessories may
also cause instability whenpassing or being passed by large
vehicles.
lCertain 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.
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Use caution when adding electrical
accessories. If electrical
accessories exceed the capacity of
the motorcycle’s electrical system,
an electric failure could result,
which could cause a dangerous
loss of lights or engine power.
Gasoline and exhaust gas
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GASOLINE IS HIGHLY
FLAMMABLE:lAlways turn the engine off when
refueling.lTake care not to spill any gasoline
on the engine or exhaust system
when refueling.lNever refuel while smoking or in
the vicinity of an open flame.
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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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6-13
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU21560
TiresTo maximize the performance, durability,
and safe operation of your motorcycle,
note the following points regarding the
specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
EWA10500
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The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
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The tire air pressure must be
adjusted in accordance with the
riding speed and with the total
weight of rider, passenger, cargo,
and accessories approved for
this model.
Tire air pressure (measured
on cold tires):0 - 90 kg (0 - 198 lb):
Front:
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
250kPa (36 psi) (2.50 kgf/cm²)
Loading condition:
90 - 167 kg (198 - 368 lb)
Front:
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
250 kPa (36 psi) (2.50 kgf/cm²)
Maximum load*:
167 kg (368 lb)
* Total weight of rider, passenger, cargo and accessories
EWA11020
Because loading has an enormous
impact on the handling, braking,
performance and safety
characteristics of your motorcycle,
you should keep the following
precautions in mind.l
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NEVER OVERLOAD THE
MOTORCYCLE! Operation of an
overloaded motorcycle may
result in tire damage, loss of control, or severe injury. Make
sure that the total weight of rider,
passenger, cargo, and
accessories does not exceed the
specified maximum load for the
vehicle.
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Do not carry along loosely
packed items, which can shift
during a ride.
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Securely pack the heaviest items
close to the center of the
motorcycle and distribute the
weight evenly on both sides.
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Adjust the suspension and tire
air pressure with regard to the
load.
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Check the tire condition and air
pressure before each ride.
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6-23
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23250
Lubricating the rear
suspensionThe pivoting points of the rear
suspension must be lubricated at the
intervals specified in the periodic
maintenance and lubrication chart.Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
EAU23271
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic
maintenance and lubrication chart.
To check the condition
EWA10750
Securely support the motorcycle so
that there is no danger of it falling
over.Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation1. Place the motorcycle on a level surface and hold it in an upright
position.
2. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
ECA10590
If any damage is found or the front
fork does not operate smoothly, have
a Yamaha dealer check or repair it.
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8-2
SPECIFICATIONS
8
28/22 (1.273)
4th:
26/25 (1.040)
5th:
23/27 (0.852)
Chassis:Frame type:Double cradle
Caster angle: 26.50 º
Trail:
104.5 mm (4.11 in)Front tire:Type:Tubeless
Size:
100/80-17M/C (52S)
Manufacturer/model: PIRELLI/SPORT DEMONRear tire:Type:Tubeless
Size:
130/70-17M/C (62S)
Manufacturer/model:
PIRELLI/SPORT DEMONLoading:Maximum load:167 kg (368 b)
(Total weight of rider, passenger, cargo
and accessories)
Tire air pressure (measured on cold
tires):Loading condition:0-90 kg (0-198 lb)
Front:
225 kPa (33 psi) (2.25 kgf/cm
2)
Rear: 250 kPa (36 psi) (2.50 kgf/cm2)
Loading condition:
90-167 kg (198-368 lb)
Front:
225 kPa (33 psi) (2.25 kgf/cm2)
Rear: 250 kPa (36 psi) (2.50 kgf/cm2)
Front wheel:Wheel type:Cast wheel
Rim size:
17M/C x MT2.15Rear wheel:Wheel type:Cast wheel
Rim size:
17M/C x MT3.00Front brake:Type:Single disc brake
Operation: Right hand operation
Recommended fluid:
DOT 3 or 4
Rear brake:Type: Leading, trailing drum brake
Operation: Right foot operation
Recommended fluid:
DOT 3 or 4Front suspension:Type:Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 120.0 mm (4.72 in)Rear suspension:Type:Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
120.0 mm (4.72 in)Electrical system:Ignition system: Transistorized coil ignition (digital)
Charging system: AC magnetoBattery:Model: YTX77L-BS
Voltage, capacity:
12 V, 6.0 Ah
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