PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual page 198

Cooling system
Let the flywheel cover guard cool down and then
manually mount the static part of the ceramic seal
with the relative rubber seal.
N.B.
PAY ATTENTION TO MOUNTING THE CERAMIC RING
CORRECTLY. THE CHAMFER ON THE INTERNAL DIAME-
TER MUST BE TURNED AWAY FROM THE SIDE OF THE
BEARINGS.
Mount the moving part of the ceramic seal on the
shaft with the impeller. The rubber part must rest
against the impeller.
Position the flywheel cover on the press using the
support base for the bearings that is part of the
special tool. Install the special punch with the im-
peller's template on the press piston.
Specific tooling
020628Y Water pump service kit
COOL SYS - 198
MSS X9 Evolution 250