APRILIA Tuono V4 1100 Factory Service Station Manual page 366

Engine
•
Loosen the six nuts on the stud bolts,
proceeding in the following order: 6 - 5
- 4 - 3 - 2 - 1.
•
After loosening all nuts, remove them
in order indicated above.
•
Remove the rear head, slipping it off
the stud bolts.
•
Collect the gasket and the two dowel
pins.
•
Remove the chain tensioner complete
with O-ring using the specific tool.
•
If the O-ring is not on the chain ten-
sioner, make sure it was not left in the
crankcase seat.
REPLACE THE O RING UPON EACH REMOVAL.
Specific tooling
020883Y Fitting/removing timing chain ten-
sioner tool
Rear head check
Check that:
ENG - 366
Tuono V4 1100 Factory