APRILIA RS4 125 Service Station Manual page 192

Engine
•
Insert the timing control chain on the
crankshaft.
•
Insert the chain tensioner pad of the
head and lock it with the fixing screw.
•
Insert the camshafts in their seats on
the head, remember to position the
camshaft marked with the letter (A) on
the intake side and the camshaft
marked with the letter (S) on the ex-
haust side.
WARNING
POSITION THE CAMS OF BOTH SHAFTS FACING OUT-
WARDS.
•
Position the cam tower cap.
•
Screw but do not and tighten the eight
screws.
•
Place the pins in their positions on the
overhead camshafts.
Specific tooling
864567 Locking pins timing camshafts
ENG - 192
RS4 125