HEAD BEARINGS
Specification Desc./Quantity
bearing «A» Ø 10.000 (+0.015) mm
bearing «B» Ø 28.000 (+0.007 +0.028) mm
bearing «C» Ø 42.000 (+0.009 +0.034) mm
Measure the unloaded spring length
Characteristic
Standard length
35.8 mm
- Remove any carbon deposits from the valve
seats.
- Check the width of the mark on the valve seat
«V» with Prussian blue.
Characteristic
Standard value:
1 - 1.3 mm
- If the width of the mark on the valve seat is larger than the prescribed limits, true the seats with a 45°
milling cutter and then grind.
- In case of excessive wear or damage, replace the head.
Vespa LX - S 125 3V ie 150 3V ie (2012) Characteristics
CHAR - 21
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