Specifications

•
Mark the piston crown on the outlet
side to remember its position when re-
fitting.
•
Remove the piston.
Fitting the piston
NOTE
THE OPERATIONS DESCRIBED BELOW REFER TO REMOVING ONLY ONE HEAD BUT APPLY
TO BOTH HEADS.
•
The reference on the piston ring must
be facing the piston crown.
•
Fit the piston rings on the piston: - the
oil scraper in the lower slot; - the thicker
smooth ring in the intermediate slot; -
the less thick smooth ring in the upper
slot.
•
The piston rings must be offset at 120°
one from the other.
•
Fit one of the two pin snap rings on the
piston.
•
Lock crankshaft rotation.
Specific tooling
12.91.18.01 Tool to lock flywheel and start-up
crown gear
•
Fit the piston.
NOTE
CHECK THE PISTON DIRECTION ACCORDING TO THE REFERENCES MARKED ON THE PISTON
CROWN. DO NOT ASSEMBLE PISTONS AND CYLINDERS OF DIFFERENT SELECTOR TYPES.
GRISO 8V - 1200 Engine
ENG - 147
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten