Triumph TR4A - Page 62

S
U
PPLEME
NT
2, Invert the
lid,
and
with the float lever resting on the
base of
the needle
valve, held in the shut position
by
the
weight of
the float only, there should
be
+"
to
*"
(3'2
to 4 8 mm.)
gap
between
the float lever and the dm of the
float
chamber
lid.
3,
If necessary, carefully bend
the lever at the crank, in the
required direction until
the
correct
setting is obtained,
Cleaning
Periodically,
push ofl the fuel inlet connection,
remove the
float chamber
lid
assemblies,
remove all sediment from the float
chambers and
re-assemble the carburettors.
Suction
Chamber and
Piston
(Fig.
5)
Periodically,
remove the suction chamber
and
Piston
unit
for
cleaning.
Use a cloth
moistened in petrol,
to
clean the inside
of
the suction chamber,
and the external sudace
of thg
piston.
Lightly oil
the
piston
rod, before
re-assembling the carburettor,
and refill
the piston damper,
NOTE.
Before dismantling,
mark the suction chamber and
carburettor
body to
facilitate
identical
re-assembly.
Needles
(Fig.
4)
The
needle
is carried
in the lower face of
the
piston.
To gain
access to the needle, remove
the
piston/sucti€n
chamber unit,
Remove the needle by slackening
the needle securing screw and
withdrawing the needle.
Ftc.4