PIAGGIO Vespa LX 150 4T Euro 3 Service Station Manual page 126

Engine
- Remove the oil guard on the flywheel side.
- Remove the oil filter fitting shown in the diagram
- Check the axial clearance on the connecting rod.
Characteristic
Standard clearance
0.20 ÷ 0.50 mm
- Check the radial clearance on the connecting rod.
-Check the surfaces that limit the axial free-play
are not scored and measure the width of the crank-
shaft between these surfaces, as shown in the
diagram.
CAUTION
BE CAREFUL NOT TO LET THE MEASURE-
MENT BE AFFECTED BY THE UNIONS WITH
THE CRANKSHAFT ENDS.
Characteristic
Standard clearance
0.036 ÷ 0.054 mm
- If the axial clearance between crankshaft and
crankcase is exceeding and the crankshaft does
not have any defect, the problem must be due to
either excessive wear or wrong machining on the
crankcase.
CAUTION
THE CRANKSHAFT CAN BE REUSED WHEN
THE WIDTH IS WITHIN THE STANDARD VAL-
UES AND THE SURFACES SHOW NO SIGNS
OF SCORING.
Characteristic
ENG - 42
Vespa LX 125 - 150 4T Euro 3