SERVICE INSTRUCTIONS (Con't.)
through the gaskets, pump diaphragm, pump body and
mixing chamber coincide.
b)
Make
sure
that
the
check valve
is
correctly positioned in
the pump
body
(in line
with
the valve
seats).
c)
Make
sure
that
the inlet tension and diaphragm springs
are
correctly positioned.
d)
Replace the six screws which
fix
the pump section
to
the
main body.
e)
Secure counterpoint screw one
by
one
to
prevent de-
forming the pump cover.
6.
ADJUSTMENTS:
Four separate adjustments
are
required
following
the
above overhaul procedure.
a)
FUEL
LEVEL.
b)
IDLE
MIXTURE
SCREW.
c)
IDLE
SPEED SCREW.
d) HIGH SPEED
MIXTURE
SCREW.
a)
FUEL
LEVEL:
Install fuel level checking parts and start the engine.
Loosen lock screw and
turn
the adjustment screw.
(See
figure) Fuel level in
vinyl
tube must come in line
with
under-
neath fringe
of
the
mixing body. Fuel level in vinyl tube must
come in line
with
underneath fringe
of
the
pump
body
(and
not
the pump
body
ass'y.)
Secure the adjustment screw
by
the lock screw. Do
not
over-
tighten
so
as
not
to
damage the adjustment screw.
b)
IDLE
MIXTURE
SCREW:
Adjust the idle
mixture
screw
until
smooth engine running
is
obtained.
Clockwise
turning
results leaner mixture, counter-clockwise
turning results richer mixture.
81
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