Checking The Ignition Timing; Recommended Products; Braking System - VESPA LX 50 Workshop Manual

Maintenance

Checking the ignition timing

- Adjust the control cables:
Mix cable: see procedure indicated in "Mixer tim-
ing".
Throttle cable: adjust the set screw on the carbu-
rettor in such a way that the sheath has no back-
lash.
Splitter control cable: adjust set screw on the throt-
tle control to the handlebar in such a way that there
is no backlash on the throttle control.
Adjust all transmissions in such a way that their
sheathings show no sign of backlash.
Mixer Timing
- Using the transmission set screw on the crank-
case, with throttle control untwisted, adjust the
reference mark on the rotating plate so that it is
lined up with the reference mark on the mixer
body, as shown in the figure.
While doing this, the engine must be fuelled with a
2 % oil mixture (0.5 litre minimum if the reservoir
is empty).
CAUTION
IN CASE OF DISMANTLING OR RUNNING OUT OF OIL IN
THE RESERVOIR BLEED THE MIXER AS FOLLOWS: RE-
FILL THE OIL RESERVOIR WHEN THE MIXER IS FITTED
TO THE VEHICLE AND THE ENGINE IS OFF, UNDO THE
MIXER PIPE FROM THE CARBURETTOR AND LOOSEN
THE BLEED SCREWS (SEE THE ARROW IN THE FIGURE)
UNTIL THE OIL BEGINS TO FLOW OUT. TIGHTEN THE
SCREWS, START UP THE ENGINE AND WAIT FOR OIL TO
FLOW OUT OF THE TUBE. RECONNECT THE DELIVERY
PIPE TO THE CARBURETTOR AND FIX IT IN PLACE WITH
THE RELEVANT METAL CLIP.

Recommended products

AGIP CITY TEC 2T Mixer oil
synthetic oil for 2-stroke engines: JASO FC, ISO-
L-EGD

Braking system

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Vespa LX 50