KTM 85 SX 2021 - Adjusting the Riding Sag

10 TUNING THE CHASSIS
38
402659-10
Main work
– Measure the full spring length while it is under tension and
note down the value.
–
Loosen screw
1
.
–
Turn adjusting ring
2
until the spring is no longer under ten-
sion.
Hook wrench (90129051000)
– Measure the total spring length while the spring is not under
tension.
–
Tension the spring by turning adjusting ring
2
to specified
dimension
A
.
Guideline
Spring preload 11 mm (0.43 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.
–
Tighten screw
1
.
Guideline
Screw, shock
absorber adjusting
ring
M5 5 Nm (3.7 lbf ft)
Finishing work
– Install the shock absorber. ( p. 55)
– Remove the motorcycle from the lift stand. ( p. 44)
10.11 Adjusting the riding sag
Preparatory work
– Raise the motorcycle with a lift stand. ( p. 44)
– Remove the shock absorber. ( p. 54)
– After removing the shock absorber, clean it thoroughly.
B00292-10
Main work
– Choose and mount a suitable spring.
Guideline
Spring rate
Weight of rider: < 45 kg
(< 99 lb.)
35 N/mm (200 lb/in)
Weight of rider: 45 …
55 kg (99 … 121 lb.)
40 N/mm (228 lb/in)
Weight of rider: > 55 kg
(> 121 lb.)
45 N/mm (257 lb/in)