10 TUNING THE CHASSIS 26
10.9 Adjusting the spring preload of the shock absorber x
Caution
Danger of accidents Disassembly of pressurized parts can lead to injury.
– The shock absorber is filled with high density nitrogen. Adhere to the description provided. (Your authorized KTM workshop
will be glad to help.)
Info
Before changing the spring preload, make a note of the present setting, e.g., by measuring the length of the spring.
Preparatory work
– Raise the motorcycle with the lift stand. ( p. 30)
–
Remove the manifold. x ( p. 41)
–
Remove the shock absorber. x ( p. 37)
– After removing the shock absorber, clean it thoroughly.
401025-10
Main work
– Loosen screw 1.
– Turn adjusting ring 2 until the spring is no longer under tension.
Hook wrench (T106S)
– Measure the overall spring length when not under tension.
– Tighten the spring by turning adjusting ring 2 to measurement A.
Guideline
Spring preload 19 mm (0.75 in)
Info
Depending on the static sag and/or the riding sag, it may be necessary to
increase or decrease the spring preload.
– Tighten screw 1.
Guideline
Screw, shock absorber adjusting ring M5 5 Nm (3.7 lbf ft)
Finishing work
–
Install the shock absorber. x ( p. 38)
–
Install the manifold. x ( p. 42)
– Remove the motorcycle from the lift stand. ( p. 30)
10.10 Adjusting the riding sag x
Preparatory work
– Raise the motorcycle with the lift stand. ( p. 30)
–
Remove the manifold. x ( p. 41)
–
Remove the shock absorber. x ( p. 37)
– After removing the shock absorber, clean it thoroughly.
B00292-10
Main work
– Choose and mount a suitable spring.
Guideline
Spring rate
Weight of rider: 65… 75 kg (143…
165 lb.)
54 N/mm (308 lb/in)
Weight of rider: 75… 85 kg (165…
187 lb.)
57 N/mm (325 lb/in)
Weight of rider: 85… 95 kg (187…
209 lb.)
60 N/mm (343 lb/in)
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