Gilera GP 800 i.e. Service Station Manual page 32

Characteristics
- Calculate the clearance between valve and valve
guide.
- Check the deviation of the valve stem by resting
it on a "V" shaped abutment and measuring the
extent of the deformation with a comparator.
Characteristic
Limit values admitted:
0.1 mm
- Check the concentricity of the valve head by ar-
ranging a comparator at right angle relative to the
valve head and rotate it on a "V" shaped abutment.
Characteristic
Admissible limit:
0.03 mm
Measure the valve guide.
Characteristic
Valve guide:
5 +0.012 mm
CHAR - 26
GP 800 i.e.