FUEL—CARBURETION
19
FIGURE 19—Fast Idle Cam Clearance
Adjustment
Hold choke valve tightly closed.
Adjust fast idle screw on primary throttle shaft arm to
obtain .023" (T-109-189) opening between the edge of the
throttle valve and the bore of the carburetor (side opposite
idle port). The fast idle speed lug must be on high step of
cam while making this adjustment.
Unloader Adjustment
With throttle wide open, there should be %2" (T-109126)
clearance between upper edge of choke valve and side of
air horn. Adjust by bending unloader projection on throttle
lever.
Secondary Throttle Lever Adjustment
Block choke valve open to unlock secondary throttle
valves.
Place 11/;4" gauge (T-109-166) between upper edge of
primary throttle valve and bore (next to idle port) and
adjust secondary operating rod (use bending tool T-109-
213) until secondary throttle valves just start to open.
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