9 TUNING THE CHASSIS
20
Guideline
Do not loosen screw
2
and fitting
3
.
Spring preload
125/150/250 SX EU,
250/350/450 SX‑F EU,
125 SX US,
250/350/450 SX‑F US
TC 125/150/250 EU,
FC 250/350/450 EU,
TC 125 US,
FC 250/350/450 US
8 mm (0.31 in)
250 SX US
TC 250 US
7 mm (0.28 in)
Info
The spring preload is the difference between the
relaxed spring length and the tensioned spring length.
Depending on the static sag and/or the riding sag, it
may be necessary to increase or decrease the spring
preload.
9.12 Adjusting the riding sag
Preparatory work
– Remove the shock absorber. ( p. 12)
– After removing the shock absorber, clean it thoroughly.
B00292-10
Main work
– Choose and mount a suitable spring.
Info
The spring rate is shown on the outside of the spring.
Smaller weight differences can be compensated by
changing the spring preload.
Suitable springs are available from a WP Authorized
Center.
Finishing work
– Install the shock absorber. ( p. 12)
– Check the static sag of the shock absorber. ( p. 18)
– Check the riding sag of the shock absorber. ( p. 19)
– Adjust the low-speed rebound damping of the shock
absorber. ( p. 16)
– Adjust the high-speed rebound damping of the shock
absorber. ( p. 17)
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