Setting Of Spring After Replacement; Front Fork Setting Parts; Rear Suspension Setting; Choosing Set Length - Yamaha YZ250F Owner's Service Manual

SETTING OF SPRING AFTER REPLACE-
EAS1SM5373
MENT
As the front fork setting can be easily affected
by the rear suspension, take care so that the
front and the rear are balanced (in position etc.)
when setting the front fork.
1. Use of soft spring
• Change the rebound damping force.
Turn out one or two clicks.
• Change the compression damping force.
Turn in one or two clicks.
TIP
Generally a soft spring gives a soft riding feel-
ing. Rebound damping tends to become stron-
ger and the front fork may sink deeply over a
series of gaps.
2. Use of stiff spring
• Change the rebound damping force.
Turn in one or two clicks.
• Change the compression damping force.
Turn out one or two clicks.
TIP
Generally a stiff spring gives a stiff riding feel-
ing. Rebound damping tends to become weak-
er, resulting in lack of a sense of contact with
the road surface or in a vibrating handlebar.

FRONT FORK SETTING PARTS

EAS1SM5374
• Front fork spring "1"
Spring
Type rate N/
mm
SOFT 4.5
STD* 4.6
STD 4.7
4.8
4.9
STIFF 5.0
*Except for USA and CAN
TIP
The I.D. mark (slits) "a" is proved on the end of
the spring.
I.D.
Part number Mark
(slits)
1SL-23141-20
1SM-23141-00
1SL-23141-30 |-|||
1SL-23141-10
1SL-23141-40 |-||||
1SL-23141-50 |-|||||
1SL-23141-60 ||-||
1SL-23141-70 ||-|||
a

REAR SUSPENSION SETTING

EAS1SM5375
The rear shock absorber setting should be
made depending on the rider's feeling of an ac-
tual run and the circuit conditions.
The rear suspension setting includes the fol-
lowing 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.
|-||

CHOOSING SET LENGTH

EAS1SM5376
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.
10-3
CHASSIS
1