APRILIA RSV4 RR 2017 Service Station Manual page 337

RSV4 RR-RF
•
Fit the camshaft gear
•
Keep the gear in position with the chain
tightened
THE SIDE WITH THE BEVELLED HOLE IN THE TIMING
SYSTEM GEAR MUST ALWAYS FACE THE EXTERIOR OF
THE HEAD.
•
Install both chain sliders and fasten
them with the specific screws.
NOTE
THIS ENGINE HAS CAMSHAFTS OF THE EXHAUST VALVES WITH CLEARANCE RECOVERY.
•
Install the intake and exhaust cam-
shafts on the rear head, remembering
that:
the intake camshaft gear tooth (indicated with a
dot) is inserted in the groove of the exhaust cam-
shaft gear (indicated with two dots).
CLEAN THOROUGHLY THE SEATS OF THE GEAR RE-
TAINER SCREWS, ON THE INTAKE CAMSHAFT.
•
Check the number engraved on the U
bolts, which must correspond with the
one engraved on the head.
•
If the U bolts between the two heads
are inverted, camshaft seizure may oc-
cur
IT IS NOT POSSIBLE TO REPLACE ONLY ONE U BOLT, IF
NECESSARY: REPLACE THE ENTIRE HEAD.
Engine
ENG - 337