Throttle Stop Screw Setting
Throttle stop screw is located on the throttle shaft
lever (side
of
carburetor by ignition coil).
It
must be
adjusted and set for 1/32 inch clearance over the
manifold surface when the engine is running with no
load. See Figure 7a.
STARTING POSITION IDLING POSITION
THROTTLE
,[
STOP
SCREW
SETTHIS
DISTANCE^
1
nnv,
I
LL
AT
1/32
INCH WHEN
PLATE
PLANT
IS
RUNNING
AT NO LOAD
FIGURE
7a.
THROTTLE STOP SCREW
Float Adjustment
To check float level, Figure 7b Spec
B-G,
Figure 7c
Spec A, remove the entire main fuel adjustment
assembly from float bowl (unscrew large nut from
float bowl. The proper level from float to bowl flange
gasket is1/8inch with fuel floatweight on needleand
spring. The float tab should just touch fuel inlet valve
and not compress inlet valve spring. Adjust by bend-
ing tab on the float.
Do
not apply excessive pressure
fo
floaf valve.
BEND TAB
GASKET TAB CONTACTING
HEAD
OF
PIN, WITH
FULL WEIGHT
OF
FLOAT
COMPRESSING INLET
VALVE SPRING.
FIGURE
7b.
FLOAT LEVEL ADJUSTMENT SPEC B-G
THIS DIMENSION
SHOULD BE
1/8
INCH
i
1/16 INCH
FIGURE
7c.
FLOAT LEVEL ADJUSTMENT SPEC
A
CARBURETOR
ADJUSTMENTS
(Begin
Spec
H)
The carburetor idle and main mixture screws were set
for maximum efficiency at the factory and should
normally not be disturbed. If adjustments seem
necessary, first besure the ignition system isworking
properly and is not the source of the problem.
If adjustment
is
needed, proceed as follows:
1.
Turn both mixture screws in until lightly seated
(Figure7a), then back the idle mixture screw out
1
turn and the main mixturescrew out
1-1/4
turns.
Forcing fhemixfureadjusfmenf
screw fight will damage the
needle and seat Turn in on/y unfil right fension
can
be
felt
MAINFUEL
ADJUSTMENT
FS-1002
FIGURE
7d.
DOWNDRAFT CARBURETOR ADJUSTMENT
2.
Start the engine and allow it to warm up thor-
oughly (at least
10
minutes).
16
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Redistribution or publication of this document
by any means, is strictly prohibited.
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