Removing The Piston - Gilera Runner Purejet 2007 Workshop Manual

Engine
Inspecting the cylinder
• Check that the cylinder exhibits no seizure. If it
does, replace or adjust it, while respecting the al-
lowable oversizes.
• Use a bore meter to measure the cylinder inside
diameter according to the directions shown in the
figure.
• Check that the fitting surface with the head is not worn or deformed
To classify the fitting, refer to the tables.
See also
Cylinder - piston assy.
Inspecting the piston rings
• Alternatively, insert the 2 sealing rings into the
cylinder.
• Insert the rings in an orthogonal position relative
to the cylinder axis, using the piston.
• Measure the sealing ring opening by a feeler
gauge, as shown in the figure.
• If the values are higher than those prescribed on the chart, replace the rings

Removing the piston

• Insert the roller in the connecting rod
ENG - 82
Runner Purejet