VESPA 946 E4 EMEA 2021 Manual page 33

Vespa 946 E4-E5 EMEA-USA-ASIA (2021-)
Assembly clearances
Cylinder - piston assy.
VERSION 125 cm³
Specification
Plunger diameter
Cylinder diameter
Name
cylinder - piston
cylinder - piston
cylinder - piston
cylinder - piston
VERSION 150 cm³
Specification
Plunger diameter
Cylinder diameter
Name
cylinder - piston
cylinder - piston
cylinder - piston
cylinder - piston
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.
CYLINDER - PISTON
COUPLING CATEGORIES
Initials Cylinder
A 51.980 - 51.987
B 51.987 - 51.994
C 51.994 - 52.001
D 52.001 - 52.008
CYLINDER - PISTON
COUPLING CATEGORIES
Initials Cylinder
A 57.980 - 57.987
B 57.987 - 57.994
C 57.994 - 58.001
W 58.001 - 58.008
Technical Data
Desc./Quantity
51.961 (±0.014) mm
52 (+0.008 -0.020) mm
Piston Play on fitting
51.947 - 51.954 0.026 - 0.040
51.954 - 51.961 0.026 - 0.040
51.961 - 51.968 0.026 - 0.040
51.968 - 51.975 0.026 - 0.040
Desc./Quantity
57.947 (± 0.014) mm
58 (+0.008 -0.020) mm
Piston Play on fitting
57.933 - 57.940 0.040 - 0.054
57.940 - 57.947 0.040 - 0.054
57.947 - 57.954 0.040 - 0.054
58.954 - 58.961 0.040 - 0.054
DT - 33