VESPA GTS Super 125 i.e. Service Station Manual page 19

Vespa GTS Super 125 i.e.
Characteristics
*Fit rings «2» and «3» with the word «TOP» facing upwards.
** Position the port of the rings as shown here.
*** Value «A» of the sealing ring inside the cylinder (fitting clearance).
Check the size of the sealing ring opening:
Compression ring 0.15 - 0.30 mm. Max. value 0.5 mm
Oil scraper ring 0.10 - 0.30 mm. Max. value 0.65 mm
Oil scraper ring 0.15 - 0.35 mm. Max. value 0.65 mm
N.B.
FITTING CLEARANCE VALUES ARE THE SAME FOR BOTH THE STANDARD SEALING RINGS
AND THE OVERSIZES.
CHAR - 19