2011 YAMAHA YBR250 fuel

PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
6
EAU25902
Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
U5D1E1E0.book Page 34 Friday, September 5, 2008 1:17 PM

MOTORCYCLE CARE AND STORAGE
7-1
7
EAU26004
Care While the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a motor-
cycle. 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 cleaning
1. 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 in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and de-
greaser off with water.
Cleaning
NOTICE
ECA10772


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 af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.


Improper cleaning can damage
plastic parts (such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc.) and
the mufflers. Use only a soft,
clean cloth or sponge with wa-
ter to clean plastic. However, if
the plastic parts cannot be thor-
oughly cleaned with water, di-
luted mild detergent with water
may be used. Be sure to rinseoff any detergent residue using
plenty of water, as it is harmful
to plastic parts.


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 re-
movers or inhibitors, brake flu-
id, antifreeze or electrolyte.


Do not use high-pressure wash-
ers or steam-jet cleaners since
they cause water seepage and
deterioration in the following ar-
eas: seals (of wheel and swing-
arm bearings, fork and brakes),
electric components (couplers,
connectors, instruments,
switches and lights), breather
hoses and vents.


For motorcycles equipped with
a windshield: Do not use strong
cleaners or hard sponges as
they will cause dulling or
scratching. Some cleaning com-
pounds for plastic may leave
scratches on the windshield.
U5D1E1E0.book Page 1 Friday, September 5, 2008 1:17 PM

MOTORCYCLE CARE AND STORAGE
7-3
7
NOTICE
ECA10800


Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.


Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.


Avoid using abrasive polishing
compounds as they will wearaway the paint.
TIP

Consult a Yamaha dealer for ad-
vice on what products to use.


Washing, rainy weather or humid
climates can cause the headlight
lens to fog. Turning the headlight
on for a short period of time will
help remove the moisture from thelens.
EAUM1901
Storage Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.NOTICE
ECA10810


Storing the motorcycle in a
poorly ventilated room or cover-
ing it with a tarp, while it is still
wet, will allow water and humid-
ity to seep in and cause rust.


To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-cals are stored.
Long-term
Before storing your motorcycle for sev-
eral months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.3. Perform the following steps to pro-
tect the cylinder, piston rings, etc.
from corrosion.
a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine oil
into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10951]
4. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
U5D1E1E0.book Page 3 Friday, September 5, 2008 1:17 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2025 mm (79.7 in)
Overall width:
745 mm (29.3 in)
Overall height:
1065 mm (41.9 in)
Seat height:
805 mm (31.7 in)
Wheelbase:
1360 mm (53.5 in)
Ground clearance:
190 mm (7.48 in)
Minimum turning radius:
2395 mm (94.3 in)Weight:With oil and fuel:
154.0 kg (340 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
249.0 cm³
Bore × stroke:
74.0 × 58.0 mm (2.91 × 2.28 in)
Compression ratio:
9.80 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 20W-40 or 20W-50
Recommended engine oil grade:
API service SF, SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter element replacement:
1.35 L (1.43 US qt, 1.19 Imp.qt)
With oil filter element replacement:
1.45 L (1.53 US qt, 1.28 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
19.2 L (5.07 US gal, 4.22 Imp.gal)
Fuel reserve amount:
4.5 L (1.19 US gal, 0.99 Imp.gal)
Fuel injection:Throttle body:
Type/quantity:
33EHS-3D01/1Spark plug (s):Manufacturer/model:
NGK/DR8EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
74/24 (3.083)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
44/15 (2.933)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
36/14 (2.571)
2nd:
32/19 (1.684)
3rd:
28/22 (1.273)
4th:
26/25 (1.040)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U5D1E1E0.book Page 1 Friday, September 5, 2008 1:17 PM

INDEXAAir filter element, cleaning..................... 6-11
Auxiliary light bulb, replacing ................ 6-29BBattery................................................... 6-25
Brake and clutch levers, checking and
lubricating ........................................... 6-23
Brake and shift pedals, checking and
lubricating ........................................... 6-22
Brake fluid, changing ............................ 6-19
Brake fluid level, checking .................... 6-18
Brake lever .............................................. 3-6
Brake pads and shoes, checking .......... 6-17
Brake pedal ............................................. 3-7
Brake pedal position and free play,
adjusting ............................................. 6-16CCables, checking and lubricating .......... 6-21
Care ........................................................ 7-1
Catalytic converter .................................. 3-9
Clutch lever ............................................. 3-6
Clutch lever free play, adjusting ............ 6-15
Cowling and panels, removing and
installing................................................ 6-6DDimmer switch ........................................ 3-5
Display, multi-function ............................. 3-3
Drive chain, cleaning and lubricating .... 6-21
Drive chain slack ................................... 6-19EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-12
Engine oil and oil filter element ............... 6-9
Engine stop switch .................................. 3-5Engine trouble warning light ................... 3-2
FFront fork, checking .............................. 6-24
Fuel......................................................... 3-8
Fuel consumption, tips for reducing........ 5-2
Fuel level warning light ........................... 3-2
Fuel tank cap .......................................... 3-7
Fuses, replacing ................................... 6-27HHandlebar switches ................................ 3-5
Headlight bulb, replacing ...................... 6-28
Helmet holder ....................................... 3-10
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-5IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-13
Indicator and warning lights .................... 3-2LLuggage strap holders .......................... 3-12MMain switch/steering lock........................ 3-1
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control system... 6-2
Model label ............................................. 9-1NNeutral indicator light .............................. 3-2PParking ................................................... 5-3
Part locations .......................................... 2-1
Pass switch............................................. 3-5RRear brake light switch, adjusting ......... 6-17
Rear suspension, lubricating ................ 6-24
SSafety information ................................... 1-1
Seat ....................................................... 3-10
Shifting .................................................... 5-2
Shift pedal ............................................... 3-6
Shock absorber assemblies,
adjusting ............................................. 3-11
Sidestand .............................................. 3-12
Sidestand, checking and lubricating...... 6-23
Spark plug, checking ............................... 6-7
Specifications .......................................... 8-1
Speedometer........................................... 3-3
Starting the engine .................................. 5-1
Start switch.............................................. 3-5
Steering, checking................................. 6-25
Storage.................................................... 7-3
Storage compartment............................ 3-11
Supporting the motorcycle .................... 6-30TTachometer ............................................. 3-3
Throttle cable free play, checking ......... 6-12
Throttle grip and cable, checking and
lubricating ........................................... 6-22
Tires ...................................................... 6-13
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-33
Troubleshooting chart ........................... 6-34
Turn signal indicator lights ...................... 3-2
Turn signal light bulb or tail/brake light
bulb, replacing .................................... 6-29
Turn signal switch ................................... 3-5VValve clearance..................................... 6-13
Vehicle identification number .................. 9-1
U5D1E1E0.book Page 1 Friday, September 5, 2008 1:17 PM