Slot Packing System - APRILIA SR MAX 125 ie Service Station Manual

Characteristics
- Check that the cam contact sliding block and the
articulated register cap is free from wear.
- In case of wear, replace the component.

Slot packing system

Characteristic
Compression ratio
Cr: 11.50 - 13:1
Measurement «A» to be taken, is a value of piston protrusion. It indicates by how much the plane formed
by the piston crown protrudes from the plane formed by the upper part of the cylinder. The further the
piston protrudes from the cylinder, the thicker the base gasket to be used (to restore the compression
ratio) and vice versa.
NOTE
NO GASKETS AND SEALS SHOULD BE ASSEMBLED BETWEEN THE CRANKCASE AND CYL-
INDER AND THE DIAL GAUGE EQUIPPED WITH SUPPORT SHOULD BE SET TO ZERO FOR
MEASUREMENT «A» TO BE TAKEN WITH THE PISTON AT TOP DEAD CENTRE POSITION AND
ON A RECTIFIED PLANE.
CHAR - 22
SR MAX 125 ie