Fitting the piston
•
Install the piston and the piston pin on
the connecting rod, orienting the piston
with the arrow facing towards the ex-
haust side.
•
Fit the retainer circlip.
•
Provisionally fit the cylinder onto the
piston, without fitting the cylinder base
gasket.
•
Fit a dial gauge on the specific tool.
•
Bring the piston to TDC.
•
Place the dial gauge against one side
of the cylinder and fasten securely to
ensure that the zero position is read
correctly.
Specific tooling
AP8140266 Dial gauge mount
•
Move the dial gauge diagonally and
measure the protrusion of the piston
relative to the reference surface.
•
Calculate the thickness of the gasket
necessary and select the appropriate
gasket by referring to the values indi-
cated in the table in the chapter "SE-
LECTING BASE GASKETS".
Engine RS 125 - Tuono 125 - Euro 4
ENG - 216
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