Gilera Fuoco 500 - Coupling Categories; Height to Measure the Piston; Piston Rings; Cylinder - Piston

HEIGHT TO MEASURE THE PISTON
Specification Desc./Quantity
A 10 mm
B 43 mm
CYLINDER - PISTON
Specification Desc./Quantity
Cylinder diameter C 94 +0.018-0.01mm
Piston diameter P 93.968 - ±0.014 mm
COUPLING CATEGORIES
Name Initials Cylinder Piston Play on fitting
Cylinder- Piston A 93.990÷93.997 93.954÷93.961 0.029÷0.043
Cylinder- Piston B 93.997÷93.004 93.961÷93.968 0.029÷0.043
Cylinder- Piston C 94.004÷94.011 93.968÷93.975 0.029÷0.043
Cylinder- Piston D 94.011÷94.018 93.975÷93.982 0.029÷0.043
N.B.
THE PISTON MUST BE INSTALLED WITH THE ARROW FACING TOWARDS THE OUTLET SIDE,
THE PISTON RINGS MUST BE INSTALLED WITH THE WORD «TOP» OR THE STAMPED MARK
FACING UPWARDS.
Piston rings
*Fit rings «2» and «3» with the word «TOP» facing upwards.
** Position the openings in the rings as shown here.
***Value «A» of sealing ring inside the cylinder.
Check the size of the sealing ring opening:
Compression ring: 0.15 ÷ 0.35 mm. Max. value 0.5 mm
Characteristics Fuoco 500 i.e.
CHAR - 10