IDLE
Bo
ADJUSTMENT NEEDLE
CHOKE
SHAFT
HROTTLE PLATE
FLOAT
SPRING
FLOAT
ASS
EM
B
LY
MAIN JET
ADJUSTMENT
FUEL
BOWL
-SFLOAT
AXLE
Yl
ll!$
POSITION
HOOK
NDER TANG ON
I
POSITION
OF
SPRING
AFTER INSTALLATION
FIGURE
8a
SIDEDRAFT CARBURETOR ASSEMBLY
4.
Check the condition of any needle valve not
included in repair kit and replace if damaged
(Figure 8b). Replace float if loaded with fuel
or
damaged.
5.
Checkthechokeand throttleshafts forexcessive
2.
Rejoin upper and lower carburetor sections on
downdraft carburetors
-
fuel bowl and upper
carburetor body on sidedraft models.
WARNING
Fuelleakageis a fireandexplo-
n
sion hazard that miahf cause
.
play in their bore, and replace if necessary.
in repair kit.
6.
Replace old components with new parts included
FIGURE 8b. MIXTURE NEEDLE INSPECTION
Reassembly and Installation
1.
Install needle valve and seat, fuel bowl gasket,
and float assembly. Make sure that all clips and
springs are properly placed and that the float
moves freely without binding. Check float level
and adjust as necessary (see
Float
Level
Adjust-
ment).
severe personal injury or death. Use ;are when
reassembling carburetor.
All
parts must align
perfectly or carburetor will leak fuel.
The float spring on Zenith sidedrafl carburetors rides on the
inner face
of
the fuel bowl. Be sure to catch the end
of
the
spring when reinstalling the bowl (Figure Sa).
3.
Slide in throttle shaft and install throttle plate,
using new screws if furnished in repair kit. Before
tightening the screws, the plate must be centered
in the bore.
To
do
so,
back
off
the throttle stop
screw as necessary and completely close the
throttle lever. Seat the plate by tapping with small
screwdriver, then tighten screws. Install the choke
shaft and plate in the same manner.
4.
Install main and idle mixture screw assemblies.
Turn in screws until lightly seated and then out
the number of turns specified.
Forcing the mixture adjustment
screws tight will damage the
needle andseat. Turn in only untillight tension
is
felt.
5.
Reinstall carburetor on engine and connect fuel
lines, linkages, and wires.
6.
Reset mixture screws according
to
directions
given earlier in this section. Install air cleaner
adapter, where used, and air cleaner.
19
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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