APRILIA RSV4 Factory a-PRC 2009 Service Station Manual page 323

RSV4 Factory a-PRC

THIS ENGINE HAS CAMSHAFTS OF THE EXHAUST

VALVES WITH CLEARANCE RECOVERY.

Install the intake and exhaust camshafts on the front head, bearing in mind that:

the exhaust camshaft gear tooth (indicated with a dot) is meshed with the trough of the intake camshaft

gear (indicated with two dots).

CLEAN THOROUGHLY THE SEATS OF THE GEAR RETAINER SCREWS, ON THE INTAKE CAM-

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-

IT IS NOT POSSIBLE TO REPLACE ONLY ONE U BOLT, IF

NECESSARY: REPLACE THE ENTIRE HEAD.

Fit the U bolts with the nine O rings and

locator pins.

Install the oil pipe.

Fit the new washers under the screws

(2) near the spark plug holes only.

Tighten the ten screws (1 - 2) working

in stages and diagonally.