APRILIA TUONO R FACTORY 2007 Service Station Manual page 160

Engine
REAR CYLINDER
•
Loosen the lock-nut of the countershaft
gear with a punch inserted in the coun-
tershaft.
•
During this operation pay attention not
to load the timing chain.
•
Remove the upper chain guide pad.
•
Remove the toothed wheels of the rear
camshafts.
•
Remove the fixed rear chain guide pad.
ENG - 160
TUONO R_FACTORY