Removing The Oil Sump; Inspecting The By-Pass Valve - PIAGGIO XEVO 125 Euro 3 Service Station Manual

Engine

Removing the oil sump

- Remove the oil filler plug, the transmission cover,
the complete driving pulley assembly with belt and
the sprocket wheel, as described in the "Trans-
mission" chapter.
- Drain the oil as described previously.
- Remove the seven screws, shown in the dia-
gram, and the two rear brake fluid pipe fixing
brackets.
- Remove the screw, the by-pass piston, the gas-
ket and centring dowels shown in the figure.

Inspecting the by-pass valve

- Check the unloaded spring length.
- Check that the small piston is not scored.
- Ensure that it slides freely on the crankcase and
that it guarantees a good seal.
- If not, eliminate any impurities or replace defec-
tive parts.
Characteristic
By-pass check up: Standard length
54.2 mm
ENG - 64
XEVO 125 Euro 3