To prevent oil leaks in the contact area between cylinders and crankcase, each time the head is removed, cylinder and piston
must be removed as well to clean the mating faces of crankcase and cylinder and restore the worn gaskets and O-rings and apply
again sealing compound.
Lower the cylinder head carefully over the thru bolts. Take care not to damage the threads.
Apply specified grease on the underhead of nuts (1) and on the thru bolt thread.
Fit the special washers (2) and polygonal nuts (1) onto the cylinder head thru bolts.
Screw the polygonal nuts (1) on the thru bolts following a cross pattern using tool no.
88713.2676 together with a torque wrench.
Apply a snug torque of 20 Nm to nuts (1), a pre-tightening to a torque of 40 Nm (Min. 38 Nm - Max. 48 Nm) and a tightening
to a torque of 60 Nm (Min. 57 Nm - Max. 63 Nm).