Yamaha YZ450F Owner's Service Manual page 53

Compression damping adjusting positions
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum (hard)
Rear suspension
Type
Spring/shock absorber type
Rear shock absorber assembly travel
Spring free length
Spring rate K1
Spring stroke K1
Optional spring available
Enclosed gas/air pressure (STD)
Spring installed length
Minimum
Standard
Maximum
Rebound damping adjusting positions
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum
Compression damping adjusting positions
(for fast compression damping)
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum
Compression damping adjusting positions
(for slow compression damping)
* Position in which the adjuster is turned in finger tight
Minimum
Standard
Maximum
Swingarm
Swingarm end free play limit (radial)
Swingarm end free play limit (axial)
CHASSIS SPECIFICATIONS
20 click (s) out*
8 click (s) out*
Fully turned in
Swingarm (link suspension)
Coil spring/gas-oil damper
132.0 mm (5.20 in)
275.0 mm (10.83 in)
58.00 N/mm (5.91 kgf/mm, 331.18 lbf/in) (USA)
(CAN)
56.00 N/mm (5.71 kgf/mm, 319.76 lbf/in) (EUR)
(JPN) (AUS) (NZL) (ZAF)
0.0–150.0 mm (0.00–5.91 in)
Yes
980 kPa (9.8 kgf/cm
Position in which the spring is turned in 1.5 mm
(0.06 in) from its free length.
Position in which the spring is turned in 10 mm
(0.39 in) from its free length.
Position in which the spring is turned in 18 mm
(0.71 in) from its free length.
30 click (s) out*
14 click (s) out* (USA) (CAN)
12 click (s) out* (EUR) (JPN) (AUS) (NZL)
(ZAF)
Fully turned in
2 turn (s) out*
1-1/2 turn (s) out* (USA) (CAN)
1-1/8 turn (s) out* (EUR) (JPN) (AUS) (NZL)
(ZAF)
Fully turned in
20 click (s) out*
12 click (s) out* (USA) (CAN)
10 click (s) out* (EUR) (JPN) (AUS) (NZL)
(ZAF)
Fully turned in
1.0 mm (0.04 in)
0.2–0.9 mm (0.01–0.04 in)
2-10
2
, 139.4 psi)