Units equipped as per Fig. 114 and Fig. 115, close fuel
filter valve and open bleed screw in needle valve to drain
the carburetor. Close bleed screw. Remove wing plug to
fill fuel line and carburetor with gasoline. Combination
fuel tank units, Fig, 112 and Fig. 108, open gasoline
shut-off valve "A," and close kerosene shut-off valve "B"
two or three minutes before shutting off engine. This will
stop the flow of kerosene to the carburetor, and will
admit gasoline to the carburetor.
Fig. 114 - Kerosene Fuel System
Fig. 115 - Kerosene Fuel System
(Crankcase Vacuum Operated)
Some models are factory or field equipped with fuel
pumps operated by crankcase vacuum. Fuel pumps
may be mounted directly to the carburetor or on a
mounting bracket, Fig. 116 or Fig. 117. Crankcase
vacuum is obtained by a fitting on the dipstick tube, Fig.
118, a hollow bolt and fitting, Fig. 117, or from the
crankcase breather valve, Fig. 116.
Fig. 116 - Pump on Carburetor,
Breather Valve Vacuum
Fig. 117 - Pump on Bracket,
Vacuum thru Hollow Bolt
Fig. 118 - Vacuum from Dipstick Tube