CHASSIS
10-3
TIP
Generally a stiff spring gives a stiff riding feeling.
Rebound damping tends to become weaker, re-
sulting in lack of a sense of contact with the road
surface or in a vibrating handlebar.
EAM30174
FRONT FORK SETTING PARTS
•
Front fork spring
TIP
The I.D. mark (slits) is proved on the end of the
spring.
EAM30175
REAR SUSPENSION SETTING
The rear shock absorber setting should be made
depending on the rider’s feeling of an actual run
and the circuit conditions.
The rear suspension setting includes the follow-
ing two factors:
1. Setting of spring preload
•
Change the set length of the spring.
•
Change the spring.
2. Setting of damping force
•
Change the rebound damping force.
•
Change the compression damping force.
EAM30176
CHOOSING SET LENGTH
1. Place a stand or a block under the engine to
put the rear wheel above the floor, and mea-
sure the length “a” between the rear wheel
axle center and the rear fender holding bolt.
2. Remove the stand or block from the engine
and, with a rider astride the seat, measure the
sunken length “b” between the rear wheel
axle center and the rear fender holding bolt.
3. Loosen the locknut “1” and make adjustment
by turning the adjuster “2” to achieve the
standard figure from the subtraction of the
length “b” from the length “a”.
TIP
•
If the machine is new and after it is broken in,
the same set length of the spring may change
because of the initial fatigue, etc. of the spring.
Therefore, be sure to make reevaluation.
•
If the standard figure cannot be achieved by
adjusting the adjuster and changing the set
length, replace the spring with an optional one
and make readjustment.
STD Spring rate
N/mm
4.6
Type
Spring
rate
N/mm
Part number
I.D.
mark
(slits)
SOFT
4.1
B3J-23141-10
III
4.2
B3J-23141-20
IIII
4.3
B3J-23141-30
IIIII
4.4
B3J-23141-40
I-I
4.5
BR9-23141-20
I-II
4.6
BR9-23141-30
I-III
4.7
BR9-23141-40
I-IIII
4.8
BR9-23141-50
I-IIIII
4.9
BR9-23141-60
II-II
5.0
BR9-23141-70
II-III
STIFF
5.1
BR9-23141-80
II-IIII
Standard figure
90–100 mm (3.5–3.9 in)
a
b
1
1
2
2
Содержание YZ 2023 Series
Страница 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Страница 10: ......
Страница 44: ...MOTORCYCLE CARE AND STORAGE 1 32...
Страница 61: ...TIGHTENING TORQUES 2 16...
Страница 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view...
Страница 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view...
Страница 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view...
Страница 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view...
Страница 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view...
Страница 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view...
Страница 74: ...CABLE ROUTING DIAGRAM 2 29...
Страница 112: ...ELECTRICAL SYSTEM 3 36...
Страница 148: ...REAR BRAKE 4 34 system Refer to BLEEDING THE HYDRAULIC BRAKE SYSTEM on page 3 25...
Страница 154: ...HANDLEBAR 4 40 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in...
Страница 187: ...INSTALLING THE TRANSMISSION 5 74...
Страница 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump...
Страница 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft...
Страница 192: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Camshaft 2 Oil pressure check bolt 3 Oil pump 4 Oil filter element...
Страница 245: ...SHIFT SHAFT 5 58 TIP Align the punch mark a on the shift shaft with the punch mark b in the shift pedal 1 1 2 2 a b...
Страница 251: ...OIL PUMP 5 64 A Primary drive gear side B Crankcase cover side 5 7 mm 0 02 0 28 in 5 c d 6 8 b 8 6 7 E...
Страница 264: ...TRANSMISSION 5 77...
Страница 274: ...WATER PUMP 6 9...
Страница 284: ...THROTTLE BODY 7 9...
Страница 286: ...CHECKING THE INTAKE AIR TEMPERATURE SENSOR 8 58 CHECKING THE GEAR POSITION SWITCH 8 58 CHECKING THE INJECTOR 8 59...
Страница 287: ......
Страница 288: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM...
Страница 292: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM...
Страница 296: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM...
Страница 299: ...CHARGING SYSTEM 8 12...
Страница 300: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM...
Страница 304: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM...
Страница 329: ...FUEL INJECTION SYSTEM 8 42...
Страница 330: ...FUEL PUMP SYSTEM 8 43 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM...
Страница 362: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15...
Страница 372: ...CHASSIS 10 9...
Страница 374: ......
Страница 376: ......
Страница 377: ...YZ250FXP 2023 WIRING DIAGRAM BAJ 2819U 13_WD indd 1 2022 04 01 9 58 37...
Страница 378: ...YZ250FXP 2023 WIRING DIAGRAM BAJ 2819U 13_WD indd 2 2022 04 01 9 58 37...