PIAGGIO Vespa 125 Super Operation And Maintenance page 21

OPERATING AND MAINTENANCE: COMMON OPERATIONS TO CARRY OUT
SUBSTITUTING BULBS
SETTING THE HEADLAMP
NOTES
Before switching on the new light bulbs check (on assy.), that the socket contact points
are efficient. Do not wipe down with a cloth or contact with finger the reflector. This
operation can be carried out also with the driver only sitting on the saddle. In this case, of
course, the beam alignment should be altered whenever the scooter is beefing ridden by
both driver and passenger.
Fig. 16 - Setting the headlamp
N. B. - The point < 0 > is valid for setting with one or two persons mounted
Note: m. 5 = 16 FT approx.; m. 0.92 - 0.94 = 3 FT approx.
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Should one of the headlamp bulbs fail, be fore fitting
a replacement, check the real light bulb for
serviceability and vide versa
The correct setting of the main beam car be obtained
both horizontally and vertically as follows:
Check that both front and rear tires are inflated to
correct pressures; i. e. 1.1 and 2.5 Kg/cm² ( 15.5 and
35.5 p.s.i.). Place the scooter on a level floor in front
of a white wall as seen in Fig. 16. Start the engine
hold the throttle control twist grip at about 1 /3 and
set the switch on <main beam> With two persons on
the Vespa, slacken the device securing the
headlamp, then move the latter as required, in order
that the beam axis coincides with point < 0 > or the
wall. Tighten the screw firmly.