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6.1 TANK AND SUPPLY
GENERAL INFORMATION
The supply system consists of a petrol tank (built
into the upper conveyor) connected to the carburet-
tor by a pipe. A mesh filter on the bottom of the tank
stops deposits and impurities from reaching the
carburettor.
The supply to the carburettor float chamber is
caused by gravity and the volume of petrol taken
from the tank as the engine runs is compensated by
a breather pipe in the cap.
The supply system can malfunction in the following
ways:
•
difficult or failed start or insufficient power (if not
due to other causes):
= Petrol filter dirty
= Petrol pipes clogged;
= Inefficient breather pipe
SERVICING PROCEDURES
WARNING! All work on the tank and on the sup-
ply system must be carried out in safe condi-
tions, so:
– do not smoke;
– always empty the tank;
– work in a ventilated environment away from
naked flames or unprotected sources of heat;
– collect petrol in a suitable container with a
cap using a funnel and avoid spilling it on the
work bench;
– remove all traces of spilt petrol immediately;
– check you have connected the pipes before
pouring petrol back into the tank
A) Emptying and removing the tank
1
Remove the conveyor (1) secured by three nuts
(2).
2
Remove the ring (3) of the petrol pipe (4) from
the carburettor side and drain all the fuel from
the tank into a suitable container.
3
For assembly, follow the above procedures in
WORKSHOP MANUAL
6.1.
0
TANK AND SUPPLY
[u
6.1.B];
[u
6.1.C].
6
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1
SV 150
2004
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01/2005
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