Installing The Head - APRILIA STRADA 660 Service Manual

ENGINE
3.3.7.

INSTALLING THE HEAD

•
Install the two centring dowels.
•
Install a new head gasket.
NOTE Aprilia provides an additional gasket to be fitted
under the head to compensate for any possible tolerance
inaccuracy in the mating surfaces.
•
Install the head.
•
Insert four new washers.
NOTE Install washers with rounded surface facing the bolt
seat.
Lubricate head bolt threads and sealing surfaces with engine
oil.
•
Tighten the four head bolts in the sequence shown.
NOTE Tighten the head bolts following the tightening
sequence shown and the correct torque, in two stages.
• Tighten the two longer head bolts (on the right side) to
the specified torque.
Tighten the two shorter head bolts (on the right side) to the
specified torque.
3 - 44
MY 660