APRILIA RSV4 Factory a-PRC 2009 Service Station Manual page 406

Suspensions
Draining oil
•
Fix the fork in a vice, taking care not to
damage the fork.
•
Set the minimum spring preloading.
•
Unscrew the upper cap from the sleeve
using a specific Öhlins tool.
•
Loosen the cap, holding the upper
spring ring nut still with a wrench.
•
Unscrew the upper adjustment cap.
•
Remove the complete cap.
SUSP - 406
RSV4 Factory a-PRC