78/83/90 Series Horizontal Shaft Engines
54
NOTE: The main jet secures the emulsion tube in the
central column of the carburetor.
See Figure 4.30.
10. The throttle stop screw has a large pliable lip around
the head of the screw. That lip secures a metering
plug for the pilot and transition ports. Remove the
screw to reach the plug.
See Figure 4.31.
11. Carefully pry out the metering plug and spacer
using a small screwdriver.
See Figure 4.32.
Figure 4.30
Emulsion air port: main jet
Emulsion air port: pilot jet
Emulsion tube
Main jet
Welch plug
Fuel feed leg
on central
column for pilot
and transition
shot plug in feed bore
Fuel port to
central column
Figure 4.31
Throttle stop
screw
Figure 4.32
Throttle stop
screw
Metering
plug
Spacer
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