PIAGGIO Beverly 500 i.e., Workshop Manual

Page: 12 / 382

This is to inform you that the tightening torque for
screws with dwg. no. 842502 has been increased
from 8-10 Nm to 14-16 Nm, to prevent the exhaust
pipe from coming loose.
Overhaul data
This section provides the main information for scooter servicing.
Assembly clearances
Cylinder - piston assy.
HEIGHT AT WHICH THE DIAMETER SHOULD BE MEASURED
Specification Desc./Quantity
A 43.2 mm
B 43 mm
CYLINDER - PISTON
Specification Desc./Quantity
Cylinder diameter C 92+0.018-0.01
Piston diameter P 91.916-0.029-0.057
CATEGORIES OF COUPLING
Name Initials Cylinder Piston Play on fitting
Cylinder- Piston A 91.990 - 91.997 91.947 - 91.954 0.036 - 0.050
Cylinder- Piston B 91.997 - 92.004 91.954 - 91.961 0.036 - 0.050
Cylinder- Piston C 92.004 - 92.011 91.961 - 91.968 0.036 - 0.050
Cylinder- Piston D 92.011 - 92.018 91.968 - 91.975 0.036 - 0.050
N.B.
THE PISTON MUST BE INSTALLED WITH THE ARROW FACING TOWARDS THE EXHAUST SIDE,
THE PISTON RINGS MUST BE INSTALLED WITH THE WORD «TOP» OR THE STAMPED MARK
FACING UPWARDS.
Characteristics
Beverly 500 i.e.
CHAR - 12