Yamaha YZ250T1 Owner's Service Manual page 263

SETTING
EC72P010
Front fork setting parts
9 Adjustment washer 1
TYPE (thickness)
T=2.3 mm (0.09 in)
9 Front fork spring 2
SPRING
TYPE
RATE
0.398
0.408
SOFT
0.418
0.428
STD 0.438
0.449
0.459
STIFF
0.469
0.479
NOTE:
The I.D. mark (slits) a is proved on the end of
the spring.
7-18
TUN
PART NUMBER
1C3-23364-00
I.D.
SPRING
MARK
PART NUMBER
(slits)
1C3-23141-00 I
1C3-23141-10 II
1C3-23141-20 III
1C3-23141-30 IIII
1P8-23141-L0 –
1C3-23141-50 I-I
1C3-23141-60 I-II
1C3-23141-70 I-III
1C3-23141-80 I-IIII