Choosing The Gasket - PIAGGIO 2005 XEVO 400ie Workshop Manual

XEVO 400ie
- Install the pin lock using the key shown in the
figure.
Specific tooling
020470Y Pin retainers installation tool
N.B.
THE TOOL FOR INSTALLING THE SNAP RINGS MUST BE USED MANUALLY.
CAUTION
USING A HAMMER MIGHT DAMAGE THE STOPS' HOUSING.

Choosing the gasket

- Provisionally fit the piston into the cylinder, without any base gasket.
- Install a dial gauge on the special tool using the short union, as shown in the figure.
Specific tooling
020475Y Piston position checking tool
- Using an abutment plane, reset the dial gauge
with a preload of a few millimetres.
- Finally fix the dial gauge.
- Check the perfect sliding of the feeler pin.
- Install the tool on the cylinder without changing
the dial gauge position.
- Lock the tool using the original head fixing nuts.
- Rotate the crankshaft up to the TDC (the inver-
sion point of the dial gauge rotation)
- Measure the deviation from the reset value.
- Identify the thickness of the cylinder base gasket to be used for reassembly by the table below. Cor-
rectly identify the cylinder base gasket thickness to keep the correct compression ratio.
- Remove the special tool and the cylinder.
N.B.
Engine
ENG - 127