Maintenance PT 2/3 /...
wc_tx000013gb.fm 29
4.14 Carburetor (Vanguard)
See Graphic: wc_gr000033
4.14.1 Start engine and allow it to warm up to operating temperature.
4.14.2 Place throttle control in idle position. Hold carburetor throttle lever (a)
against idle speed screw. Turn idle speed screw (b) to obtain 1300
RPM.
4.14.3 While still holding carburetor throttle lever against idle speed screw,
turn idle mixture screw (c) clockwise (lean) or counterclockwise (rich)
until engine runs smoothly. Release carburetor throttle lever.
4.14.4 Adjust governed idle screw (d) to 1400 RPM. Move throttle control to
the fast position. Engine should accelerate smoothly. If it does not,
readjust carburetor, usually to a slighly richer mixture, by turning idle
mixture screw (c) 1/8 turn counterclockwise.
4.14.5 Adjust top speed screw (f) to 3500 RPM.
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