18 FUEL—CARBURETION
ADJUSTMENTS
Float Adjustment
Float adjustment is performed during assembly. "Refer to
Assembling Air Horn."
Pump Adjustment
Back out idle speed screw, hold choke in wide open
position, then close throttle valves tight in bores of carbu-
retor.
Flat on top of pump arm must be parallel with dust
cover gasket surface.
Bend throttle connector rod at lower angle to obtain
adjustment.
FIGURE 16—Accelerator Pump Adjustment
Metering Rod Adjustment
With throttle valves seated, press down on vacumeter link
until metering rods are bottomed.
Holding rods down with throttle valves seated, rotate
metering rod arm until it contacts lip on vacumeter link.
Tighten metering rod arm clamp screw.
Vapor Vent Adjustment
Lubricate countershaft with oil and install dust cover and
gasket.
With choke valve held in wide open position and throt-
tle valves seated, there should be I/32" between lower edge
of bowl vapor vent valve and dust cover. To adjust, re-
move dust cover and bend vapor vent arm.
Rotate choke coil housing in direction opposite arrow
until index mark on coil housing is aligned with center
index on piston housing. Tighten retaining screws.
With choke lever clamp screw loose, hold choke valve
closed.
Figure 17—Meteromg Rpd Adkist,em
Figure 18—Vapor Vent Adjustment
Place wire gauge T-109.189 .023" on boss. Rotate choke
lever on shaft until tang on fast idle cam contacts wire gauge
To Next Page
Loading...
