Yamaha YZ250X 2023 User manual

BRY-28199-70
OWNER’S MANUAL
MANUEL DU PROPRIÉTAIRE
Read this manual carefully before operating this vehicle.
Il convient de lire attentivement ce manuel avant la première utilisation du véhicule.
YZ250XP
PRINTED IN JAPAN
2022.05-0.1×1 !
(E, F)
YZ250X
2023
YZ250XP 2023
BRY-28199-70_cover.indd 1-3 2022/05/12 11:24:35

QRead this manual carefully before operating this vehicle. This manual should stay with this vehicle
if it is sold.
QIl convient de lire attentivement ce manuel avant la première utilisation du véhicule. Le
manuel doit être remis avec le véhicule en cas de vente de ce dernier.
BRY-28199-70_cover.indd 4-6 2022/05/12 11:24:35

Read this manual carefully before operating this vehicle.
2023
OWNER’S MANUAL
YZ250X
YZ250XP
BRY-28199-70-E0

EAM20161Read this manual carefully
Read this manual carefully before operating this vehicle. This manual should stay with this vehicle
if it is sold.
Reporting safety defects (For Canada)
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should
immediately inform Transport Canada in addition to notifying Yamaha Motor Canada Ltd, Canada. If Transport
Canada receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a
group of vehicles, it may order a recall and remedy campaign. However, Transport Canada cannot become in-
volved in individual problems between you, your dealer, or Yamaha Motor Canada Ltd., Canada.
To contact Transport Canada, you may call Defect Investigations and Recall Division at 819-994-3328 or toll free
1-800-333-0510, go to www.tc.gc.ca or email: [email protected] or write to Transport Canada, 330 Sparks Street
Ottawa, ON, K1A 0N5.
You can also obtain other information about motor vehicle safety from www.tc.gc.ca.

EAM20080
YZ250XP
OWNER’S MANUAL
©2023 by Yamaha Motor Co., Ltd.
First edition, April 2022
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan.

EAM20180
IMPORTANT
Congratulations on your purchase of a Yamaha YZ series. This model is the culmination of Yamaha’s
vast experience in the production of pacesetting racing machines. It represents the highest grade of
craftsmanship and reliability that have made Yamaha a leader.
This manual explains operation, inspection, basic maintenance and tuning of your machine. If you have
any questions about this manual or your machine, please contact your Yamaha dealer.
TIP
•Yamaha continually seeks advancements in product design and quality. Therefore, while this manual
contains the most current product information available at the time of printing, there may be minor dis-
crepancies between your machine and this manual. If you have any questions concerning this man-
ual, please consult your Yamaha dealer.
•This manual is intended for those who have basic knowledge and skill concerning the servicing of
Yamaha motorcycles (e.g., Yamaha dealers, service engineers, etc.). Those who have little knowl-
edge and skill concerning servicing are requested not to undertake inspection, adjustment, disassem-
bly, or reassembly only by reference to this manual. It may lead to servicing trouble and mechanical
damage.
WARNING
EWA20270
PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS
MACHINE. DO NOT ATTEMPT TO OPERATE THIS MACHINE UNTIL YOU HAVE ATTAINED A
SATISFACTORY KNOWLEDGE OF ITS CONTROLS AND OPERATING FEATURES AND UNTIL
YOU HAVE BEEN TRAINED IN SAFE AND PROPER RIDING TECHNIQUES. REGULAR INSPEC-
TIONS AND CAREFUL MAINTENANCE, ALONG WITH GOOD RIDING SKILLS, WILL ENSURE
THAT YOU SAFETY ENJOY THE CAPABILITIES AND THE RELIABILITY OF THIS MACHINE.
EAM30001
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following notations.
This is the safety alert symbol. It is used to alert you to potential per-
sonal injury hazards. Obey all safety messages that follow this symbol
to avoid possible injury or death.
A WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid
damage to the vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICE
TIP

GENERAL INFORMATION 1
SPECIFICATIONS 2
PERIODIC CHECKS AND
ADJUSTMENTS 3
CHASSIS 4
ENGINE 5
ELECTRICAL SYSTEM 6
TROUBLESHOOTING 7
TUNING 8
EAM10003
TABLE OF CONTENTS

1
2
3
4
5
6
7
8
9
10
GENERAL INFORMATION
SAFETY INFORMATION..................................................................................1-1
FOR SAFETY, BE SURE TO OBEY THE FOLLOWING: ..........................1-1
LOCATION OF IMPORTANT LABELS ............................................................1-4
DESCRIPTION..................................................................................................1-7
IDENTIFICATION..............................................................................................1-8
VEHICLE IDENTIFICATION NUMBER ......................................................1-8
ENGINE SERIAL NUMBER .......................................................................1-8
INCLUDED PARTS...........................................................................................1-9
NIPPLE WRENCH......................................................................................1-9
VALVE JOINT.............................................................................................1-9
SET PIN (tool for YPVS).............................................................................1-9
IMPORTANT INFORMATION .........................................................................1-10
PREPARATION FOR REMOVAL AND DISASSEMBLY..........................1-10
REPLACEMENT PARTS..........................................................................1-10
INSTRUMENT AND CONTROL FUNCTIONS ...............................................1-11
ENGINE STOP SWITCH..........................................................................1-11
SHIFT PEDAL ..........................................................................................1-11
KICKSTARTER LEVER............................................................................1-11
FRONT BRAKE LEVER ...........................................................................1-11
REAR BRAKE PEDAL..............................................................................1-11
FUEL COCK .............................................................................................1-11
STARTER KNOB (CHOKE) .....................................................................1-12
SIDESTAND .............................................................................................1-12
STARTING AND BREAK-IN...........................................................................1-13
FUEL AND ENGINE MIXING OIL ............................................................1-13
STARTING A COLD ENGINE ..................................................................1-13
STARTING A WARM ENGINE.................................................................1-13
BREAK-IN PROCEDURES ......................................................................1-13
MAINTENANCE AFTER BREAK-IN ..............................................................1-15
MAJOR MAINTENANCE..........................................................................1-15
AIR FILTER MAINTENANCE ...................................................................1-15
TORQUE-CHECK POINTS.............................................................................1-16
MOTORCYCLE CARE AND STORAGE ........................................................1-18
CARE........................................................................................................1-18
STORAGE ................................................................................................1-19

SAFETY INFORMATION
1-1
EAM20168
SAFETY INFORMATION
Be sure to read this manual carefully and com-
pletely in order to operate the machine safely
and correctly prior to riding the Yamaha ma-
chine, and take care to maintain it properly and
operate it safely.
EAM30401
FOR SAFETY, BE SURE TO OBEY THE
FOLLOWING:
Be a Responsible Owner
As the vehicle’s owner, you are responsible for
the safe and proper operation of your motorcy-
cle.
Motorcycles are single-track vehicles.
Their safe use and operation are dependent
upon the use of proper riding techniques as well
as the expertise of the operator. Every operator
should know the following requirements before
riding this motorcycle.
He or she should:
1. Obtain thorough instructions from a compe-
tent source on all aspects of motorcycle oper-
ation.
2. Observe the warnings and maintenance re-
quirements in this manual.
3. Obtain qualified training in safe and proper
riding techniques.
4. Obtain professional technical service as indi-
cated in this manual and/or when made nec-
essary by mechanical conditions.
5. Never operate a motorcycle without proper
training or instruction. Take a training course.
Beginners should receive training from a cer-
tified instructor. Contact an authorized motor-
cycle dealer to find out about the training
courses nearest you.
Safe Riding
Perform the pre-operation checks each time you
use the vehicle to make sure it is in safe operat-
ing condition. Failure to inspect or maintain the
vehicle properly increases the possibility of an
accident or equipment damage. Refer to “PRE-
OPERATION INSPECTION AND MAINTE-
NANCE” on page 3-4 for a list of pre-operation
checks.
1. This motorcycle is designed for off-road use
only, therefore, it is illegal to operate it on
public streets, roads, or highways, even a dirt
or gravel one. Off-road use on public lands
may be illegal. Please check local regulations
before riding.
2. This motorcycle is designed to carry the oper-
ator only. No passengers.
3. The failure of motorists to detect and recog-
nize motorcycles in traffic is the predominat-
ing cause of automobile/motorcycle
accidents. Many accidents have been
caused by an automobile driver who did not
see the motorcycle. Making yourself conspic-
uous appears to be very effective in reducing
the chance of this type of accident.
Therefore:
•Wear a brightly colored jacket.
•Use extra caution when you are approaching
and passing through intersections, since in-
tersections are the most likely places for mo-
torcycle accidents to occur.
•Ride where other motorists can see you.
Avoid riding in another motorist’s blind spot.
•Never maintain a motorcycle without proper
knowledge. Contact an authorized motorcy-
cle dealer to inform you on basic motorcycle
maintenance. Certain maintenance can only
be carried out by certified staff.
4. Many accidents involve inexperienced opera-
tors.
•Make sure that you are qualified and that you
only lend your motorcycle to other qualified
operators.
•Know your skills and limits. Staying within
your limits may help you to avoid an accident.
•We recommend that you practice riding your
motorcycle until you have become thoroughly
familiar with the motorcycle and all of its con-
trols.
5. Many accidents have been caused by error of
the motorcycle operator. A typical error made
by the operator is veering wide on a turn due
to excessive speed or under cornering (insuf-
ficient lean angle for the speed). Never travel
faster than warranted by conditions.
6. Ride cautiously in unfamiliar areas. You may
encounter hidden obstacles that could cause
an accident.
7. The posture of the operator is important for
proper control. The operator should keep
both hands on the handlebar and both feet on
the operator footrests during operation to
maintain control of the motorcycle.
8. Never ride under the influence of alcohol or
other drugs.
9. Be sure the transmission is in neutral before
starting the engine.
Protective Apparel
The majority of fatalities from motorcycle acci-

SAFETY INFORMATION
1-2
dents are the result of head injuries. The use of
a safety helmet is the single most critical factor
in the prevention or reduction of head injuries.
1. Always wear an approved helmet.
2. Wear a face shield or goggles. Wind in your
unprotected eyes could contribute to an im-
pairment of vision that could delay seeing a
hazard.
3. The use of a jacket, heavy boots, trousers,
gloves, etc., is effective in preventing or re-
ducing abrasions or lacerations.
4. Never wear loose-fitting clothes, otherwise
they could catch on the control levers, foot-
rests, or wheels and cause injury or an acci-
dent.
5. Always wear protective clothing that covers
your legs, ankles, and feet. The engine or ex-
haust system become very hot during or after
operation and can cause burns.
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide, a
deadly gas. Breathing carbon monoxide can
cause headaches, dizziness, drowsiness, nau-
sea, confusion, and eventually death.
Carbon Monoxide is a colorless, odorless, taste-
less gas which may be present even if you do
not see or smell any engine exhaust. Deadly lev-
els of carbon monoxide can collect rapidly and
you can quickly be overcome and unable to save
yourself. Also, deadly levels of carbon monoxide
can linger for hours or days in enclosed or poorly
ventilated areas. If you experience any symp-
toms of carbon monoxide poisoning, leave the
area immediately, get fresh air, and SEEK MED-
ICAL TREATMENT.
1. Do not run engine indoors. Even if you try to
ventilate engine exhaust with fans or open
windows and doors, carbon monoxide can
rapidly reach dangerous levels.
2. Do not run engine in poorly ventilated or par-
tially enclosed areas such as barns, garages,
or carports.
3. Do not run engine outdoors where engine ex-
haust can be drawn into a building through
openings such as windows and doors.
Genuine Yamaha Accessories
Choosing accessories for your vehicle is an im-
portant decision. Genuine Yamaha accessories,
which are available only from a Yamaha dealer,
have been designed, tested, and approved by
Yamaha for use on your vehicle.
Many companies with no connection to Yamaha
manufacture parts and accessories or offer oth-
er modifications for Yamaha vehicles. Yamaha
is not in a position to test the products that these
aftermarket companies produce. Therefore,
Yamaha can neither endorse nor recommend
the use of accessories not sold by Yamaha or
modifications not specifically recommended by
Yamaha, even if sold and installed by a Yamaha
dealer.
Aftermarket Parts, Accessories, and Modifi-
cations
While you may find aftermarket products similar
in design and quality to genuine Yamaha acces-
sories, recognize that some aftermarket acces-
sories or modifications are not suitable because
of potential safety hazards to you or others. In-
stalling aftermarket products or having other
modifications performed to your vehicle that
change any of the vehicle’s design or operation
characteristics can put you and others at greater
risk of serious injury or death. You are responsi-
ble for injuries related to changes in the vehicle.
Keep the following guidelines in mind, as well as
those provided under “Loading” when mounting
accessories.
1. Never install accessories that would impair
the performance of your motorcycle. Careful-
ly inspect the accessory before using it to
make sure that it does not in any way reduce
ground clearance or cornering clearance, lim-
it suspension travel, steering travel or control
operation.
•Accessories fitted to the handlebar or the
front fork area can create instability due to im-
proper weight distribution. 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.
•Bulky or large accessories may seriously af-
fect the stability of the motorcycle. Wind may
attempt to lift the motorcycle, or the motorcy-
cle may become unstable in cross winds.
•Certain accessories can displace the opera-
tor from his or her normal riding position. This
improper position limits the freedom of move-
ment of the operator and may limit control
ability, therefore, such accessories are not
recommended.
2. Use caution when adding electrical accesso-
ries. If electrical accessories exceed the ca-
pacity of the motorcycle’s electrical system,
an electric failure could result, which could
cause a dangerous loss of lights or engine
power.

SAFETY INFORMATION
1-3
Aftermarket Tires and Rims
The tires and rims that came with your motorcy-
cle were designed to match the performance ca-
pabilities and to provide the best combination of
handling, braking, and comfort. Other tires, rims,
sizes, and combinations may not be appropriate.
Refer to “CHECKING THE TIRES” on page 3-22
for tire specifications and more information on
replacing your tires.
Transporting the Motorcycle
Be sure to observe following instructions before
transporting the motorcycle in another vehicle.
1. Remove all loose items from the motorcycle.
2. Check that the fuel cock (if equipped) is in the
“OFF” position and that there are no fuel
leaks.
3. Point the front wheel straight ahead on the
trailer or in the truck bed, and choke it in a rail
to prevent movement.
4. Shift the transmission in gear (for models with
a manual transmission).
5. Secure the motorcycle with tie-downs or suit-
able straps that are attached to solid parts of
the motorcycle, such as the frame or upper
front fork triple clamp (and not, for example,
to rubber-mounted handlebars or turn sig-
nals, or parts that could break). Choose the
location for the straps carefully so the straps
will not rub against painted surfaces during
transport.
6. The suspension should be compressed
somewhat by the tie-downs, if possible, so
that the motorcycle will not bounce exces-
sively during transport.

LOCATION OF IMPORTANT LABELS
1-4
EAM20085
LOCATION OF IMPORTANT LABELS
Please read the following important labels carefully before operating this vehicle.
CAN
1, 2, 3 4, 5 6, 7 8, 9
1011

LOCATION OF IMPORTANT LABELS
1-5

LOCATION OF IMPORTANT LABELS
1-6
AUS, NZL, ZAF

DESCRIPTION
1-7
EAM20086
DESCRIPTION
TIP
Designs and specifications of the vehicle are subject to change without notice. Therefore, please note
that the descriptions in this manual may be different from those for the vehicle you have purchased.
12 3
456
78 9
101112
13 14 15
16171819
1. Clutch lever
2. Engine stop switch
3. Front brake lever
4. Throttle grip
5. Radiator cap
6. Fuel tank cap
7. Kickstarter lever
8. Fuel tank
9. Radiator
10.Coolant drain bolt
11.Check bolt (Transmission oil level)
12.Rear brake pedal
13.Valve joint
14.Fuel cock
15.Starter knob
16.Drive chain
17.Air filter
18.Shift pedal
19.Front fork

IDENTIFICATION
1-8
EAM20087
IDENTIFICATION
There are two significant reasons for knowing
the serial number of your vehicle:
1. When ordering parts, you can give the num-
ber to your Yamaha dealer for positive identi-
fication of the model you own.
2. If your vehicle is stolen, the authorities will
need the number to search for and identify
your vehicle.
EAM30002
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number “1” is stamped
into the right side of the frame.
EAM30003
ENGINE SERIAL NUMBER
The engine serial number “1” is stamped into the
elevated part of the right-side of the engine.

INCLUDED PARTS
1-9
EAM20088
INCLUDED PARTS
EAM30005
NIPPLE WRENCH
The nipple wrench “1” is used to tighten the
spoke.
EAM30534
VALVE JOINT
This valve joint “1” prevents fuel from flowing out
and is installed to the fuel tank breather hose.
NOTICE
ECA27110
In this installation, make sure the arrow fac-
es the fuel tank and also downward.
EAM30535
SET PIN (tool for YPVS)
This set pin “1” is used to remove and install the
push rod of the engine.
NOTICE
ECA27140
Be sure to use the set pin. If the set pin is not
used, the power valve constituent parts will
result in damage.

IMPORTANT INFORMATION
1-10
EAM20089
IMPORTANT INFORMATION
EAM30009
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1. Before the jobs, completely remove mud,
dust, and the like in order to prevent the entry
of them into the inside during the jobs.
Refer to “CARE” on page 1-18.
2. During disassembly, check and measure the
required parts, and make a record of them so
that you may refer to the record when install-
ing them. Moreover, arrange gears, cylin-
ders, pistons, and other parts for each section
so as not to confuse or lose them.
3. During disassembly, clean each of the parts,
and store them in trays for each section.
4. Flammable. Keep servicing areas away from
any source of fire.
5. 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.
6. If coolant is left adhered to the chassis, paint
and plating will be damaged. Therefore, rinse
it out with water in good time.
WARNING
EWA18970
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, quick-
ly wash it away with water and then with
soapy water.
• If it is swallowed, immediately induce vom-
iting and get medical attention.
EAM30010
REPLACEMENT 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 appear-
ances or because the quality may be changed
by aging.

INSTRUMENT AND CONTROL FUNCTIONS
1-11
EAM20181
INSTRUMENT AND CONTROL
FUNCTIONS
EAM30182
ENGINE STOP SWITCH
The engine stop switch “1” is located on the left
handlebar. Continue pushing the engine stop
switch till the engine comes to a stop.
EAM30185
SHIFT PEDAL
The shift pedal “1” has adopted a method of 1
down & 4 ups (press-down & kick-ups).
Press it down for N (neutral) to 1st, and kick it up
for 2nd to 5th.
EAM30186
KICKSTARTER LEVER
Rotate the kickstarter lever “1” away from the en-
gine. Push the starter down lightly with your foot
until the gears engage, then kick smoothly and
forcefully to start the engine. This model has a
primary kickstarter lever so the engine can be
started in any gear if the clutch is disengaged. In
normal practices, however, shift to neutral be-
fore starting.
EAM30188
FRONT BRAKE LEVER
The front brake lever “1” is located on the right
handlebar. Pull it toward the handlebar to acti-
vate the front brake.
EAM30189
REAR BRAKE PEDAL
The rear brake pedal “1” is in the right of the
chassis. Press down on the brake pedal to acti-
vate the rear brake.
EAM30619
FUEL COCK
The fuel cock supplies fuel from the tank to car-
buretor and also filters the fuel. The fuel cock
has the three positions:
OFF:
With the lever in this position, fuel will not flow.
Always return the lever to this position when the
engine is not running.
ON:
With the lever in this position, fuel flows to the
carburetor. Normal riding is done with the lever
1