VESPA GTV 250 i.e. 2008 Service Station Manual page 125

Vespa GTV 250 i.e.
THE TOOL FOR INSTALLING THE RETAINER RINGS MUST
BE USED MANUALLY.
CAUTION
USING A HAMMER MIGHT DAMAGE THE STOPS' HOUS-
ING.
Specific tooling
020454Y Tool for fitting the pin snap rings (200
- 250)
Choosing the gasket
Characteristic
Compression ratio 250 version
CR: 10.5 ÷ 11.5 : 1
N.B.
MEASUREMENT "A" TO BE TAKEN IS A VALUE OF PISTON RE-ENTRY, IT INDICATES BY HOW
MUCH THE PLANE FORMED BY THE PISTON CROWN FALLS BELOW THE PLANE FORMED BY
Engine
ENG - 125