2015 YAMAHA WR 250F change time

EAS2GB2005
SAFETY INFORMATION
THIS MACHINE IS DESIGNED STRICTLY FOR COMPETITION USE, ONLY ON A CLOSED
COURSE. It is illegal for this machine to be operated on any public street, road, or highway. Off-road
use on public lands may also be illegal. Please check local regulations before riding.
• THIS MACHINE IS TO BE OPERATED BY AN EXPERIENCED RIDER ONLY.
Do not attempt to operate this machine at maximum power until you are totally familiar with its char-
acteristics.
• THIS MACHINE IS DESIGNED TO BE RIDDEN BY THE OPERATOR ONLY.
Do not carry passengers on this machine.
• ALWAYS WEAR PROTECTIVE APPAREL.
When operating this machine, always wear an approved helmet with goggles or a face shield. Also
wear heavy boots, gloves, and protective clothing. Always wear proper fitting clothing that will not
be caught in any of the moving parts or controls of the machine.
• ALWAYS MAINTAIN YOUR MACHINE IN PROPER WORKING ORDER.
For safety and reliability, the machine must be properly maintained. Always perform the pre-oper-
ation checks indicated in this manual.
Correcting a mechanical problem before you ride may prevent an accident.
• GASOLINE IS HIGHLY FLAMMABLE.
Always turn off the engine while refueling. Take care to not spill any gasoline on the engine or ex-
haust system. Never refuel in the vicinity of an open flame, or while smoking.
• GASOLINE CAN CAUSE INJURY.
If you should swallow some gasoline, inhale excess gasoline vapors, or allow any gasoline to get
into your eyes, contact a doctor immediately. If any gasoline spills onto your skin or clothing, imme-
diately wash skin areas with soap and water, and change your clothes.
• ONLY OPERATE THE MACHINE IN AN AREA WITH ADEQUATE VENTILATION.
Never start the engine or let it run for any length of time in an enclosed area. Exhaust fumes are
poisonous. These fumes contain carbon monoxide, which by itself is odorless and colorless. Car-
bon monoxide is a dangerous gas which can cause unconsciousness or can be lethal.
• PARK THE MACHINE CAREFULLY; TURN OFF THE ENGINE.
Always turn off the engine if you are going to leave the machine. Do not park the machine on a slope
or soft ground as it may fall over.
• THE ENGINE, EXHAUST PIPE AND MUFFLER WILL BE VERY HOT AFTER THE ENGINE HAS
BEEN RUN.
Be careful not to touch them or to allow any clothing item to contact them during inspection or repair.
• PROPERLY SECURE THE MACHINE BEFORE TRANSPORTING IT.
For safety, drain the gasoline from the fuel tank before transporting the vehicle.

FEATURES
1-6
EAS20170
FEATURES
EAS2GB2014OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti-
mum air-fuel ratio in accordance with the engine operating conditions and the atmospheric tempera-
ture. In the conventional carburetor system, the air-fuel ratio of the mixture to be supplied to the
combustion chamber is determined by the amount of intake air and fuel that is measured on the basis
of the jets to be used in the carburetor.
Despite the same amount of intake air, the fuel amount requirement varies with the engine operating
conditions (acceleration, deceleration, and operation under a heavy load). The carburetor that mea-
sures fuel through the use of jets are provided with various auxiliary devices, so that the optimum air
fuel ratio can be obtained to accommodate frequent changes in the operating conditions of the en-
gine. This model has adopted an electronically controlled fuel injection (FI) system, in place of the
conventional carburetor system. This system can obtain the optimum air-fuel ratio required by the
engine at all times by using a microprocessor that regulates the fuel injection amount according to
the engine operating conditions detected by various sensors.
1. Fuel injector
2. Throttle position sensor
3. Intake air pressure sensor
4. Engine trouble warning light
5. Intake air temperature sensor
6. ECU
7. Fuel pump
8. Battery
9. Lean angle sensor
10.Crankshaft position sensor
11.Coolant temperature sensor
12.Ignition coil
13.Speed sensor
748
9 10 116 5 123
12
13

IMPORTANT INFORMATION
1-9
EAS20180
IMPORTANT INFORMATION
EAS2GB2022PREPARATION FOR REMOVAL AND DIS-
ASSEMBLY
1. Before the jobs, completely remove mud,
dust, and the like in order to prevent the en-
try of them into the inside during the jobs.
• Before cleaning with high-pressure water of
washers, cover the following parts.
Air duct
Silencer exhaust port
Drain hole on the cylinder head (right side)
Hole under the water pump housing
2. Use proper special tools and equipment.
See “SPECIAL TOOLS”.
3. During disassembly, check and measure the
required parts, and make a record of them
so that you may refer to the record when in-
stalling them. Moreover, arrange gears, cyl-
inders, pistons, and other parts for each
section so as not to confuse or lose them.4. During disassembly, clean each of the parts,
and store them in trays for each section.
5. Flammable. Keep servicing areas away
from any source of fire.
6. During servicing, take special care not to re-
ceive an injury or a burn on the engine, the
exhaust pipe, the silencer, or the like.
7. If coolant is left adhered to the chassis, paint
and plating will be damaged. Therefore,
rinse it out with water in good time.
EWA
WARNING
Coolant is potentially harmful and should
be handled with special care.
• If it enters your eyes, wash it away with wa-
ter enough and then get medical attention
• If it splashes on your skin or clothes,
quickly wash it away with water and then
with soapy water.
• If it is swallowed, immediately induce vom-
iting and get medical attention.
EAS2GB2023REPLACEMENT PARTS
Make sure that the parts and grease or oil to be
used for repair of the vehicle, including periodic
replacement parts, are new YAMAHA genuine
parts and recommended parts.
Do not use any used parts, because these may
not be genuine though they have similar ap-
pearances or because the quality may be
changed by aging.

MULTI-FUNCTION DISPLAY
1-24
EAS2GB2044
MULTI-FUNCTION DISPLAYEWA
WARNING
Be sure to stop the machine before making
any setting changes to the multi-function
display.
The multi-function display is equipped with the
following:
BASIC MODE:
• Speedometer
•Clock
• Two tripmeters (which shows the distance
that has been traveled since it was last set to
zero)
RACE MODE:
• Timer (which shows the time that has been
accumulated since the start of timer measure-
ment)
• Tripmeter (which shows the accumulated
travel distance in timer measurement)
• Change tripmeter digits (capable of change to
any given ones)
EAS2GB2045DESCRIPTION
Operation buttons:
1. Select button “SLCT 1”
2. Select button “SLCT 2”
3. Reset button “RST”
Screen display:
4. Tripmeter indicator
5. Tripmeter indicator
6. Timer indicator
7. Clock/Timer
8. Speedometer
9. Odometer/Tripmeter
TIP
The operation buttons can be pushed in the fol-
lowing two manners:
Short push: Push the button. ( )
Long push: Push the button for 2 seconds or
more. ( )
EAS2GB2046BASIC MODE
Changing speedometer display (for U.K.)
1. Push the "SLCT2" button for 2 seconds or
more to change the speedometer units. The
speedometer display will change in the fol-
lowing order:
MPH  km/h  MPH.
Setting the time
1. Push the “SLCT1” button for 2 seconds or
more to enter the time setting mode.
2. Push the “RST” button to change the display
for time indication. The display will change in
the following order:
HourMinuteSecondHour.
TIP
The digits capable of setting go on flashing.
3. Push the “SLCT1” button (plus) or “SLCT2”
button (minus) and change the time. A long
push on the button will fast-forward the time.

MULTI-FUNCTION DISPLAY
1-25
4. To end the setting, push the “RST” button for
2 seconds or more.
TIP
• In a 30-second absence of button operation,
the setting will come to an end with the indi-
cated time.
• To reset the seconds, push the “SLCT1” but-
ton or “SLCT2” button.
Changing odometer and tripmeter A/B
(TRIP A/B)
1. Push the “SLCT2” button to change the trip-
meter display. The display will change in the
following order:
OdometerTRIP ATRIP BTRIP A
Odometer.
TIP
To reset the digits, select the tripmeter involved
and push the “RST” button for 2 seconds or
more.
EAS2GB2047CHANGEOVER TO BASIC MODE/RACE
MODE
TIP
• Measurement using the timer function can be
made in RACE MODE.
• Indicator will light up as an identifier that
shows RACE MODE has been selected.
• RACE MODE cannot display the functions as
in BASIC MODE.
• Changeover to RACE MODE forces the digits
for tripmeter A (TRIP A) in BASIC MODE to be
reset.
Changeover from BASIC MODE to RACE
MODE
1. Push the “SLCT1” button and “SLCT2” but-
ton for 2 seconds or more at the same time
to change over to RACE MODE.
TIP
Changeover to RACE MODE will put manual
start measurement on standby causing and
to flash. (For manual start, refer to “Putting
measurement on standby” in “RACE MODE”.)

MULTI-FUNCTION DISPLAY
1-26
Returning to BASIC MODE from RACE
MODE
TIP
It is possible to return to BASIC MODE with tim-
er measurement at a stop.
1. Check that the timer is not in operation. If the
timer is in operation, stop the timer by push-
ing the “SLCT1” button and “SLCT2” button
at the same time.
2. Push the “SLCT1” button and “SLCT2” but-
ton for 2 seconds or more at the same time
to change over to BASIC MODE.
EAS2GB2048RACE MODE
Putting measurement on standby
TIP
Starting measurement consists of the following
two starts, either of which can be selected.
• Manual start
Starting measurement by the rider himself op-
erating the button. (A long push on the
“SLCT2” button will put measurement on
standby.)
• Auto start
Starting timer measurement automatically on
detection of the movement of the machine. (A
long push on the “SLCT1” button will put mea-
surement on standby.)Manual start
TIP
Initial setting at changeover to RACE MODE
will remain for manual start.
1. Check that changeover to RACE MODE has
been made. (Refer to “Changeover from BA-
SIC MODE to RACE MODE”.)
TIP
When the machine is made ready for a run by
manual start, and will start flashing.
2. Start timer measurement by pushing the
“RST” button.
3. When stopping timer measurement, pushing
the “SLCT1” button and “SLCT2” button at
the same time.
TIP
If the machine is run while timer measurement
is not made, no change will occur to the digit in
tripmeter A (TRIP A).
4. To resume the measurement, again push
the “SLCT1” button and “SLCT2” button at
the same time.
Auto start
1. Check that changeover has been made to
RACE MODE. (Refer to “Changeover from
BASIC MODE to RACE MODE”.)
2. Make the machine ready for a run by push-
ing the “SLCT1” button for 2 seconds or
more.
TIP
When the measurement is made ready for a
run by auto start, and will start flashing.
Timer display will turn on scrolling from left to
right.

MULTI-FUNCTION DISPLAY
1-27
3. Run the machine and start timer measure-
ment.
4. To stop timer measurement, pushing the
“SLCT1” button and “SLCT2” button at the
same time.
TIP
If the machine is run while timer measurement
is not made, no change will occur to the digit in
tripmeter A (TRIP A).
5. To resume the measurement, again pushing
the “SLCT1” button and “SLCT2” button at
the same time.
Resetting measurement data
TIP
Resetting can be made in the following two
manners.
Resetting is possible while timer measurement
is made:
• Reset tripmeter A.
Resetting is possible while timer measurement
is not made:
• Reset tripmeter A and timer.Resetting tripmeter A (TRIP A)
1. Check that the timer is in operation. If the
timer is not in operation, start the timer by
pushing the “SLCT1” button and “SLCT2”
button at the same time.
2. Reset tripmeter A (TRIP A) display by push-
ing the “RST” button for 2 seconds or more.
TIP
If reset, and travel distance display will go on
flashing for four seconds.
Resetting tripmeter A (TRIP A) and timer
1. Check that the timer is not in operation. If the
timer is in operation, stop it by pushing the
“SLCT1” button and “SLCT2” button at the
same time.
2. Reset all measured data by pushing the
“RST” button for 2 seconds or more.
TIP
• Resetting will reset the timer display and trav-
el distance display and put measurement on
standby.
• Auto start attempt will put measurement on
standby as such. Likewise, manual start at-
tempt will put measurement on standby as
such.

MULTI-FUNCTION DISPLAY
1-28
Correcting tripmeter A (TRIP A)
1. Change the travel distance display by push-
ing the “SLCT1” button (plus) or “SLCT2”
button (minus). A long push on the button
will fast-forward the change.
TIP
Change can be made any time while timer
measurement is or is not being made.
EAS2GB2049