KTM 450 SMR 2021, Owner'S Manual

Page: 39 / 139

TUNING THE CHASSIS 10
37
10.11 Adjusting the riding sag
Preparatory work
–
Raise the motorcycle with a lift stand. ( p. 42)
–
Remove the shock absorber. ( p. 52)
–
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.) 45 N/mm (257 lb/in)
Weight of rider: 75 …
85 kg (165 … 187 lb.) 48 N/mm (274 lb/in)
Weight of rider: 85 …
95 kg (187 … 209 lb.) 51 N/mm (291 lb/in)
Info
The spring rate is shown on the outside of the spring.
Finishing work
–
Install the shock absorber. ( p. 53)
–
Check the free travel of the foot brake lever. ( p. 78)
–
Check the static sag of the shock absorber. ( p. 35)
–
Check the riding sag of the shock absorber. ( p. 35)
–
Adjust the rebound damping of the shock absorber. ( p. 33)
–
Remove the motorcycle from the lift stand. ( p. 42)
10.12 Checking the basic setting of the fork
Info
For various reasons, no exact riding sag can be determined for the fork.
401000-01
–
Smaller differences in the rider's weight can be compensated
for by the fork air pressure.
–
However, if the fork frequently bottoms out (hard end stop on
compression), the fork air pressure must be increased, within
the specified values, to avoid damage to the fork and frame.
–
If the fork feels unusually hard after extended periods of oper-
ation, the fork legs need to be bled.