Minimum Admissible Diameter; Inspecting The Valve Stem Guide Clearance - PIAGGIO MP3 400 i.e. Service Manual

Engine
Specification
Outlet:
- 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

Inspecting the valve stem guide clearance

- After measuring the valve guide diameter and the valve stem diameter, check the clearance between
guide and stem.
ENG - 64

MINIMUM ADMISSIBLE DIAMETER

Inlet:
MP3 400 i.e.
Desc./Quantity
4.96 mm
4.945 mm