Beta Enduro RR 350 2015 Workshop Manual page 125

Application of the complete piston band on cylinder.
Insertion of piston in cylinder.
Application of pin bolt to piston.
Press the piston downwards having the higher
segment of the skirt protrude a bit from the
C
band. Rest the unit on the cylinder, making
sure that the contact zones of the band rest
correctly on the cylinder surface. For this pur-
pose, make sure that the upper edge C of the
band is perfectly aligned with the contact sur-
face of the cylinder.
Note: When positioning the complete band-piston
unit on the cylinder, be careful to place them so
that the arrow stamped on the crown of the piston
faces the exhaust manifold.
Holding the band firm with one hand, push
the piston inside the cylinder, making sure
that the axis of the piston is aligned with that
of the cylinder. Towards the end of insertion it
might be necessary to use the wooden handle
of a hammer or a similar tool to lightly tap the
piston crown in order to facilitate its complete
insertion in the cylinder.
Attention: during the whole operation, hold the
band firm with one hand without moving it. Make
sure that the piston rings insert themselves cor-
rectly in the cylinder when passing through the
band. Should there be excessive resistance when
inserting the piston into the cylinder, do not insist
in order not to deteriorate the parts. Find out the
cause.
When the piston has been inserted into the
cylinder and the band has been removed,
press the piston towards the bottom of the
cylinder so that the pin bolt seats come out
from the lower edge. Apply the pin bolt 1 into
the right-hand seat as much as needed to al-
low it to be coupled with the connecting rod.
1
3
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