3
120
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LS
Application of the
scraper ring strap,
version 350cc-390cc.
Picture showing positioning of the external scraper
ring strap.
Application of piston rings.
3.17.12 PISTON: APPLICATION OF THE
SCRAPER RING AND RETAI-
NING STRAPS, APPLICATION
OF SEEGER
3.17.12.1 Piston: application of
the scraper ring and re-
taining straps, version
350cc-390cc
Lubricate the seats of the segments with plenty of
oil and put the internal scraper ring strap
1
in the
lower seat of the piston.
Lay the external scraper ring strap
2
on the internal
one with the “TOP” marking facing the top of the
piston.
Put the retaining strap
3
in the upper seat.
The oil-scraper ring and retaining straps must be
laid so that their openings face the higher segment
of the skirt and at 180° between them. The retai
-
ning strap
3
must be assembled with the reference
(letter or number) facing upwards.
1
2
3
2
1