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 3-5 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-
Summary of Contents for YZ250FX 2021
Page 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Page 10: ......
Page 61: ...TIGHTENING TORQUES 2 16 ...
Page 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view ...
Page 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view ...
Page 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view ...
Page 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view ...
Page 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view ...
Page 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view ...
Page 74: ...CABLE ROUTING DIAGRAM 2 29 ...
Page 112: ...ELECTRICAL SYSTEM 3 36 ...
Page 153: ...HANDLEBAR 4 39 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in ...
Page 166: ...FRONT FORK 4 52 1 ...
Page 184: ...CHAIN DRIVE 4 70 ...
Page 189: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump ...
Page 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft ...
Page 264: ...TRANSMISSION 5 78 ...
Page 274: ...WATER PUMP 6 9 ...
Page 284: ...THROTTLE BODY 7 9 ...
Page 287: ......
Page 288: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM ...
Page 292: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Page 296: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Page 299: ...CHARGING SYSTEM 8 12 ...
Page 300: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM ...
Page 304: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Page 329: ...FUEL INJECTION SYSTEM 8 42 ...
Page 330: ...FUEL PUMP SYSTEM 8 43 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Page 362: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15 ...
Page 372: ...CHASSIS 10 9 ...
Page 374: ......
Page 376: ......
Page 377: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 1 2020 06 29 15 46 05 ...
Page 378: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 2 2020 06 29 15 46 06 ...