Specifications

3
47
ASSEMBLING AND TESTING THE ENGINE
3.12.1
THICKNESS CHECK OF
CYLINDER/CRANKCASES
GASKET
The thickness check of cylinderbase gasket
must be do whenever:
•Cylinder is changed
•Piston is changed
•Crankshaft is changed
•Con road
•Crankcases are changed
This check is very important to have a good
performance of engine.
The thickness check must be do by special to-
ols. The table shows the special tools in corre-
spondence to Displacement and Model Year.
Carefully oil all the cylinder with motor oil
and insert the piston into the cylinder.
Pressing the piston rings with your fingers
and push the piston into cylinder. The
exhaust port on the cylinder must be facing
the front of the engine.
Push the cylinder towards the crank cases
and tighten the four nuts in criss-cross
pattern. The nuts must be tightened at a
torque of 23Nm.
Inserting the piston into the cylinder.
Displacement
[cc]
Model Year Cod.
125 2009/2010/2011
007 440100 000
125 “Factrory” 2010
200 2009/2010/2011
007 440110 000
250 “GB” 2010/2011
250 2009/2010/2011
007 440120 000
290 2009/2010/2011
3.12