- Measure the outer diameter of the piston, per-
pendicular to the pin axis.
- Take the measurement in the position shown in
the figure
To classify the cylinder-piston fitting, check the ap-
propriate table
See also
Cylinder - piston assy.
Inspecting the cylinder
- Check that the cylinder does not show seizures.
Otherwise, replace it or adjust it respecting the al-
lowable increases
- Measure the internal diameter of the cylinder with
a bore meter, according to the directions given in
the figure
- Check that the fitting surface with the head is not
dented or distorted.
To classify the cylinder-piston fitting, check the ap-
propriate table
See also
Cylinder - piston assy.
Inspecting the piston rings
- Alternatively insert the two sealing rings in the
cylinder
Using the piston, insert the seals perpendicularly
to the cylinder axis.
- Measure the opening of the sealing rings using a
thickness gauge as shown in the photograph
- If the values are higher than the values prescri-
bed in the chart, substitute the rings
Vespa S 50 2T
Engine
ENG - 87
Содержание 664787
Страница 1: ...SERVICE STATION MANUAL 664787 664795 IT EN FR DE ES PT NL EL Vespa S 50 2T ...
Страница 4: ......
Страница 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 16: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 27: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 38: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 44: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 48: ...Conceptual diagrams Ignition Electrical system Vespa S 50 2T ELE SYS 48 ...
Страница 64: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 66: ...INDEX OF TOPICS ENGINE ENG ...
Страница 97: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 117: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 126: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 135: ... Undo the two screws indicated Remove the front central cover sliding it up wards Vespa S 50 2T Chassis CHAS 135 ...
Страница 136: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 140: ...INDEX OF TOPICS TIME TIME ...
Страница 141: ...Engine ENGINE Code Action Duration 1 001001 engine from frame removal and re fitting Vespa S 50 2T Time TIME 141 ...
Страница 142: ...Crankcase CRANKCASE Code Action Duration 1 001133 Engine crankcase Replacement Time Vespa S 50 2T TIME 142 ...
Страница 169: ...Seat SADDLE Code Action Duration 1 004003 Saddle Replacement Vespa S 50 2T Time TIME 169 ...