10
TUNING THE CHASSIS
31
10.9
Checking the riding sag of the shock absorber
402417-10
–
Measure distance
of rear wheel unloaded. (
–
With another person holding the motorcycle, the rider, wearing full protective cloth-
ing, sits on the seat in a normal sitting position (feet on footrests) and bounces up
and down a few times.
The rear wheel suspension levels out.
–
Another person again measures the distance between the rear axle and
marking
SAG
on the rear fender using the sag gauge.
–
Note down the value as dimension
.
Info
The riding sag is the difference between measurements
and
.
–
Check the riding sag.
Riding sag (SX
‑
F EU)
110 mm (4.33 in)
Riding sag (SX
‑
F US)
110 mm (4.33 in)
Riding sag (XC
‑
F US)
110 mm (4.33 in)
» If the riding sag differs from the specified measurement:
–
Adjust the riding sag.
10.10
Adjusting the spring preload of the shock absorber
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 a lift stand. (
–
Remove the shock absorber.
–
After removing the shock absorber, clean it thoroughly.
402405-10
Main work
–
Loosen screw
.
–
Turn adjusting ring
until the spring is no longer under tension.
Hook wrench (T106S)
–
Measure the overall spring length while the spring is not under tension.
–
Tighten the spring by turning adjusting ring
to measurement
.
Guideline
Spring preload (SX
‑
F EU)
5 mm (0.2 in)
Spring preload (SX
‑
F US)
7 mm (0.28 in)
Spring preload (XC
‑
F US)
7 mm (0.28 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
.
Guideline
Screw, shock absorber adjusting ring
M5
5 Nm (3.7 lbf ft)
Finishing work
–
Install the shock absorber.
–
Check the free travel of the foot brake lever. (
