APRILIA SCARABEO 500 2008 Service Station Manual page 173

SCARABEO 500
Removing the cylinder - piston assy.
- Remove the timing chain.
- Undo the fixing screw and remove the spacer and
the tensioner slider.
NOTE
IT IS ADVISABLE TO MARK THE CHAIN IN OR-
DER TO ENSURE THAT THE INITIAL DIREC-
TION OF ROTATION IS MAINTAINED.
- Slide off the cylinder with the relevant gasket and
the centring dowel.
NOTE
THE SECOND CENTRING IS ENSURED BY A
DOWEL SET INTO THE CYLINDER.
CAUTION
TO AVOID DAMAGING THE PISTON, KEEP IT
FIRM WHILE REMOVING THE CYLINDER.
- Remove the 2 piston pin snap rings operating
through the specific slots.
- Slide off the pin and remove the piston.
NOTE
USE PAPER OR A CLOTH TO CLOSE THE CYL-
INDER HOUSING MOUTH ON THE CRANK-
CASE TO PREVENT ONE OF THE TWO PIN
SNAP RINGS FROM FALLING INSIDE.
- Remove the piston sealing rings and the scraper
ring.
CAUTION
PAY ATTENTION TO THE FITTING POSITIONS
OF THE RINGS TO PREVENT INVERTING THE
POSITION IN CASE THEY ARE REUSED.
NOTE
BE CAREFUL NOT TO DAMAGE THE SEALING
RINGS DURING REMOVAL.
Engine
ENG - 173