Yamaha YZ450F(V) Owner's Service Manual page 640

SETTING
• Extent of adjustment (spring length)
[Titanium spring]
SPRING FREE
LENGTH
Approx. 265 mm
(10.43 in)
Approx. 275 mm
(10.83 in)
[Steel spring]
SPRING FREE
LENGTH
260 mm (10.24 in)
275 mm (10.83 in)
7 - 19
T U N
EXTENT OF
ADJUSTMENT b
One I.D. mark
245.5 ~ 263.5 mm
(9.67 ~ 10.37 in)
Two I.D. marks
251.5 ~ 269.5 mm
(9.90 ~ 10.61 in)
Three I.D. marks
243.0 ~ 261.0 mm
(9.57 ~ 10.28 in)
One I.D. mark
255.5 ~ 273.5 mm
(10.06 ~ 10.77 in)
Two I.D. marks
261.5 ~ 279.5 mm
(10.30 ~ 11.00 in)
Three I.D. marks
253.0 ~ 271.0 mm
(9.96 ~ 10.67 in)
EXTENT OF
ADJUSTMENT b
240.5 ~ 258.5 mm
(9.47 ~ 10.18 in)
255.5 ~ 273.5 mm
(10.06 ~ 10.77 in)