Sealing Rings; Removing The Piston - VESPA LX 4T USA Workshop Manual

Engine
Name
Top piston ring
Middle piston ring
oil scraper

Removing the piston

- Install piston and wrist pin onto the connecting
rod, aligning the piston arrow the arrow facing to-
wards the exhaust.
- Fit the pin stop ring onto the appropriate tool.
Specific tooling
020448Y Pin lock fitting tool
- With the opening in the position indicated on the
tool, set the lock ring into position in the tool with
the punch.
- Rest the tool on the piston paying attention that
the 90°chamfered side faces upwards as indicated
in the figure.
- Fit the gudgeon pin stop using the plug.
CAUTION
USING A HAMMER TO POSITION THE RINGS CAN DAM-
AGE THE LOCKING HOUSING.
ENG - 90

SEALING RINGS

Description Dimensions
0.08 ÷ 0.20 mm
0.05 ÷ 0.20 mm
0.20 ÷ 0.70 mm
LX 4T USA
Initials Quantity
0.35 mm
0.30 mm
0.80 mm