APRILIA TUONO V4 R 2010 Service Station Manual page 65

TUONO V4 R
•
Remove the air filter.
Checking the valve clearance
FRONT HEAD
•
Remove both throttle bodies and the
coils.
•
Remove the front head cover and the
spark plugs.
•
Remove the cap on the clutch cover in
order to turn the crankshaft, taking care
not to lose the O-ring.
See also
Removing the
throttle body
Spark plug
Head cover removal
•
Use a feeler gauge to check the clear-
ance between the cam of the shaft and
the relative tappet for both front head
shafts.
Characteristic
Acceptable values with control clearance be-
tween cam and valve
intake: 0.10 - 0.15 mm (0.0039 - 0.0059 in) ex-
haust: 0.20 - 0.25 mm (0.0079 - 0.0098 in)
Maintenance
MAIN - 65