PIAGGIO Beverly 300 i.e. - Page 23

- Check the concentricity of the valve head by
placing a dial gauge at right angles to the valve
head and rotating it on the «V» shaped support.
Characteristic
Admissible limit:
0.03 mm
Measure the valve guide.
Characteristic
Valve guide:
5 +0.012 mm
- After measuring the valve guide diameter and the
valve stem diameter, check clearance between
guide and stem.
INTAKE
Specification
Desc./Quantity
Standard clearance: 0.013 - 0.04 mm
Admissible limit: 0.08 mm
EXHAUST
Specification
Desc./Quantity
Standard clearance: 0.025 to 0.052 mm
Admissible limit: 0.09 mm
- Check that there are no signs of wear on the mating surface with the set screw articulated terminal.
Beverly 300 i.e. Characteristics
CHAR - 23