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FUEL
SYSTEM
DIAPHRAGM/VACUUM
PISTON
NOTE
•
The diaphragm/vacuum
piston
can
be
removed
without
removing
the
float
chamber.
Remove
the
vacuum chamber
cover
and
air
vent tube guido
by removing
the four
screw*.
Remove
tho
compression
spring
end diaphragm/vacuum
piston.
Inspect
the
vacuum
piston
for
wear,
nicks,
or
other
damage.
Make
sure
the
piston
moves
up and
down
freely
in
the
chamber.
Push
the
jet
needle holder
down
and
turn
it
counterclock-
wise 90 degrees with a
screwdriver.
Then remove
the nee-
dle holder, spring,
jet
needle
and washer from
the
dia-
phragm/vacuum
piston.
Inspect the
jet
needle
for
excessive
wear
at
the
tip
or
other
damage.
Check
for a
tom
diaphragm
or
other
deterioration.
FLOAT
AND
JETS
Remove
the three
screws and
accelerator
pump
diaphragm
cover.
5-5
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