APRILIA TUONO V4 R 2010 Service Station Manual page 273

TUONO V4 R
•
Block crankshaft rotation using one of
the specific tools.
•
Unscrew and remove the second in-
take camshaft gear screw.
•
Leave the gear on the camshaft.
Specific tooling
020848Y Flywheel retainer
020850Y Primary gear lock
•
Install the specific camshaft gear sup-
port tool.
•
Fix it to the head using the two screws
(1).
•
Move the gear from the camshaft to the
tool.
Specific tooling
020865Y Support for camshaft gear on head
•
Unscrew and remove the eight screws
(2), proceeding in stages and diago-
nally.
•
Retrieve the washers from the screws
near the spark plug holes.
•
Remove the U bolts with the O rings
and locator pins.
•
Remove the intake and exhaust cam-
shafts.
If the two camshafts are timed correctly, the ex-
haust camshaft gear tooth (indicated with a dot) is
meshed with the trough of the intake camshaft
gear (indicated with two dots).
Inspecting camshafts
CAMSHAFT TOOTHED WHEEL CHECK
Engine
ENG - 273