1. The float mechanism provides a constant level of fuel for the fuel metering systems. This constant fuel pressure allows for an even rate of flow through the jets.
The Float Metering Device (Fig. 133)
2. When the fuel flows through the metering jet in the top of the float bowl, the fuel level in the bowl rises. This causes the float to rise and a small bracket on the float presses against the bottom of the float needle, pushing it up into the metering jet. When the fuel reaches a predetermined point, the bracket on the float should be adjusted so that the needle is fully seated in the float metering jet, stopping the flow of fuel. See Chapter 2, Section 2, Par. 7, 8, & 9 for adjustment and maintenance of the float mechanism.