APRILIA RSV mille 956X Service And Repair Manual page 107

ENGINE
Slide the gear (13) out a couple of millimetres so that it
no longer mates with the driving gear (14).
Remove the gear (13) complete with key (15).
a
CAUTION
Be careful to keep the key (15) from dropping into the
chain compartment. Cover the chain compartment
with a clean cloth.
Unscrew and remove the three M6 x 10 T.C.E.I. screws
(16).
a
WARNING
Before removal, the three T.C.E.I. M6 x 14 screws
(16A) must be marked so that they are refitted in the
right place; danger of major engine damage and
physical injury.
Unscrew and remove the three M6 x 14 T.C.E.I. screws
(16A).
Unscrew and remove the closing screw (17) complete
with seal (18) and remove the complete chain tightener
(19).
Pull the chain guide shoe (20) out from above.
Unscrew and remove the two M6 T.C.E.I. screws (21)
with the relevant washers and remove the chain guide
(22).
Remove both the driving gear (14) and the two gears
(23).
Unscrew and remove the two M6 T.C.E.I. screws
(23A).
Slide out the upper countershaft (10), rotating it upwards.
NOTE
Set the two gears (23) aside so that they are not
mixed up and can later be refitted in the right place (the
two gears are identical).
Let the timing chain (24) drop into the cylinders chain
compartment.
Unscrew and remove the two M6 T.C.E.I. screws (25)
and four M10 nuts (26).
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RSV mille