PIAGGIO MSS ZIP 100 4T, Service Manual

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Slot packing system
THE VALUE OF MEASUREMENT «A» TO BE TAKEN CAN REFER TO EITHER THE PROTRUSION
OR RE-ENTRY OF THE PISTON. VALUES «A» INDICATED BY «-» CORRESPOND TO RE-ENTRY
AND THOSE INDICATED BY «+» CORRESPOND TO PROTRUSION. THEREFORE, THE MORE
THE PISTON PROTRUDES BEYOND THE PLANE FORMED AT THE CYLINDER UPPER END, THE
THICKER THE GASKET TO BE USED AT THE CYLINDER BASE «B» SHOULD BE.
Characteristic
Shimming system to control the compression ratio
CR: 10.5 ÷ 11.5 : 1
CYLINDER HEIGHT
54.95 ± 0.05
HEAD GASKET THICKNESS (steel)
0.3 ± 0.05
BASE GASKET THICKNESS
Specification Desc./Quantity
Size measured «A» -0.25 ÷ -0.05 0.4
Size measured «A» -0.05 ÷ -0.15 0.5
Products
TABLE OF RECOMMENDED PRODUCTS
Product Description Specifications
AGIP ROTRA 80W-90 Rear hub oil SAE 80W/90 Oil that exceeds the re-
quirements of API GL3 specifications
AGIP CITY HI TEC 4T Oil to lubricate flexible transmissions
(brakes, throttle control and odometer)
Oil for 4-stroke engines
MSS ZIP 100 4T
Characteristics
CHAR - 15