Removing The Piston - VESPA 664787 Service Station Manual

Engine

Removing the piston

- Position the snap ring in detail 1 with the opening straddling the arrow printed on the tool.
-Push detail 2 into detail 1 until the stop and extract detail 2.
- Insert detail 3 into detail 1, position the assembly in the snap ring assembly area, and push detail 3
all the way in.
N.B.
REFIT THE REMAINING PARTS FOLLOWING THE OPERATIONS IN REVERSE ORDER FROM
THE REMOVAL OPERATIONS
Specific tooling
020166Y Pin lock fitting tool
Locking torques (N*m)
Cylinder head nuts 10 -11
- Use new wrist pin snap rings.
- Use new cylinder base gasket.
- Before refitting carefully clean all the surfaces.
- Use oil to be mixed during the fitting of the piston
and the cylinder.
CAUTION
POSITION THE ARROW PRINTED ON THE PISTON
CROWN TOWARDS THE EXHAUST OPENING.
THE WRIST PIN SNAP RINGS MUST BE POSITIONED ON
THE PISTON WITH THE SPECIFIC TOOL
Recommended products
AGIP CITY TEC 2T Oil
Recommended oil
ENG - 88
Vespa S 50 2T