FUEL
SYSTEM
Page
L38
that FULL THROTTLE
is
obtoir:nk!le and that when nccelerator pedol
is
released, the throttles are
all
fully
closed.
4.
Finally tighten the locknuts securing the outer cable.
The Check Throttle Inner Cable Free Play
1.
With the inner cable attached at both ends, ond at a point midway between
the end of the outer cable and the lever on the carburetters, a movement of
between
3/16
in to
1/4
in (or
4
mm to
6
mm) MUST be acttiewed WITHOUT
moving the lever on the carburetters.
The Check
Accelemtor Pedal Travel
1.
The stop under the pedal pad should be adjusted to touch the floor (with the
carpets installed),
when the throttles on the carburetters are FULLY
C
PE
-
N.
-.
:c
!
3.
L
.
*.
"2
-L-
L_!.
-L_-
c-.
&L-
__A_!
--..L_
a.
.
,
. . ."
,
....
".
-.)-
--...-.--,
...v
i-
-
r---.
...-,
--
adjusted the MINIMUM AMOUNT NECES~~W, to give full throttle
openings.
CARBURETTER FAULT FINDING
It
is
mssumed that all engine mechanical and/or ignition faults have been corrected,
therefore the ONLY carburetter faults
possible ore as follows:
ZENITH CARBURETTERS
Erratic or Poor
ldlinq
1.
Air valve sticking: Check free movement of spring
-
lwded metering needle,
clean alr valve rod and guides. Lubricate air valve rod and guide with
a
few drops of light oil.
2.
Metering needle incorrectl
y
fitted: Check that the shoulder of the needle
is
flush with the face of the air valve and that the needle
is
biased away
from the throttle. Also, check identification to ensure correct needle
fitting.
Check
that needle housing
has
not been distorted
by
over
tightening
its
retaining screw.
3.
Partially, or fully obstructed diaphragm and float chamber ventilation holes:
Check
that air box
Is
correctly fitted and thot gaskets are not causing
abstruction.
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