Standard Valve Length; Standart Diameter; Minimum Admissable Diameter - APRILIA SR MAX 125 ie Service Station Manual

Characteristics
- In case of excessive wear or damage, replace the head.
Specification
Exhaust
- Measure the diameter of the valve stems in the three positions indicated in the diagram.
Specification
Intake:
Exhaust:
Specification
Intake:
Exhaust:
- 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 dial gauge.
Characteristic
Limit values admitted:
0.1 mm
CHAR - 18

STANDARD VALVE LENGTH

Intake
STANDARD DIAMETER
MINIMUM ADMISSIBLE DIAMETER
SR MAX 125 ie
Desc./Quantity
84.5 mm
94.5 mm
Desc./Quantity
4.987 - 4.972 mm
4.975 - 4.960 mm
Desc./Quantity
4.96 mm
4.945 mm