TUNING THE CHASSIS 10
33
10.9 Checking the riding sag of the shock absorber
400990-10
–
Measure dimension
A
of rear wheel unloaded. ( p. 32)
– With another person holding the motorcycle, the rider, wear-
ing full protective clothing, 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 now measures the distance between the rear
axle and the fixed point.
–
Note the value as dimension
C
.
Info
The riding sag is the difference between
measurements
A
and
C
.
– Check riding sag.
Riding sag (50 SX, FAC-
TORY EDITION)
80 mm (3.15 in)
Riding sag (50 SX MINI) 65 mm (2.56 in)
» If the riding sag differs from the specified measurement:
– Adjust the riding sag. ( p. 35)
10.10 Adjusting the spring preload of the shock absorber
Caution
Risk of injury Parts of the shock absorber will move around if the shock absorber is detached incorrectly.
The shock absorber is filled with highly compressed nitrogen.
– Please follow the description provided. (Your authorized KTM workshop will be glad to help.)
Preparatory work
(50 SX, FACTORY EDITION)
– Raise the motorcycle with a lift stand. ( p. 40)
(50 SX MINI)
– Raise the motorcycle with a lift stand. ( p. 40)
– Remove the rear wheel. ( p. 88)
– Remove the shock absorber. ( p. 54)
– After removing the shock absorber, clean it thoroughly.
F02186-10
Main work
(50 SX, FACTORY EDITION)
– Measure the full spring length while it is under tension and
note down the value.
–
Loosen retaining ring
1
.
–
Turn adjusting ring
2
until the spring is no longer under
tension.
Hook wrench (T304)
Hook wrench (T1533)
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