Engine - PIAGGIO Vespa 125 1955 Manual Para Estaciones De Servicio

FAULT FINDING AND REMEDIES
GROUP
in which lhe fault is verified

Engine

- In cases of poor performance, lack of compression and
( See chart at page 16).
- On substituting spark plug, use the type recommended
- The max. gap between the contact breaker points should
- With reference to the clutch and gear box it is important
14
INSTRUCTIONS VALID FOR ALL VEHICLES
Instructions relative to operations to be carried out
escape of gases, always check that the nuts and screws
securing the relative engine organs are always well tigh­
tened ( carburettor, cylinder head, muffler attachment).
on the table at pag. 7.
It is to be remembered that many engine faults derive
from inappropriate sparking plugs and the use of fuel
mixtures with unsuitable oils or with an oil percentage
different to that prescribed.
enter between the limits of 0.3 and 0.5 mm (0".011
0.019); the spark advance should correspond to that
indicated on the table at page 7 ( for engine timing see
the instructions at the section « Re - assembly
that the play on the controls be checked ( see Overhauls)
and that the cables are not frayed or rusted; in cases of
slipping or snatching
« »
level in gear box; for gear box, check the parts of the
transmission in correspondence to the gear selector.
» :
clutch, check springs, plates, oil
NOTES
For the general instruc­
tions on the vehicles main­
tenance, see the table at
page 9.
0