GAS GAS MC 450F 2021, Owner'S Manual

Page: 41 / 142

TUNING THE CHASSIS 10
39
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 (MC)
Weight of rider: 65 … 75 kg
(143 … 165 lb.) 39 N/mm (223 lb/in)
Weight of rider: 75 … 85 kg
(165 … 187 lb.) 42 N/mm (240 lb/in)
Weight of rider: 85 … 95 kg
(187 … 209 lb.) 45 N/mm (257 lb/in)
Spring rate (EX)
Weight of rider: 65 … 75 kg
(143 … 165 lb.) 42 N/mm (240 lb/in)
Weight of rider: 75 … 85 kg
(165 … 187 lb.) 45 N/mm (257 lb/in)
Weight of rider: 85 … 95 kg
(187 … 209 lb.) 48 N/mm (274 lb/in)
Info
The spring rate is shown on the outside of the spring.
Finishing work
–
Install the shock absorber. ( p. 55)
–
Check the free travel of the foot brake lever. ( p. 81)
–
Check the static sag of the shock absorber. ( p. 37)
–
Check the riding sag of the shock absorber. ( p. 37)
–
Adjust the rebound damping of the shock absorber. ( p. 35)
–
Remove the motorcycle from the lift stand. ( p. 44)
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 com-
pression), the fork air pressure must be increased, within the speci-
fied values, to avoid damage to the fork and frame.
–
If the fork feels unusually hard after extended periods of operation,
the fork legs need to be bled.