ADJUSTING THE METERING LEVER
The Metering Lever setting affects how easy the machine is to start. When the Metering
Lever is properly set, it allows the proper amount of gasoline to flow through the Carburetor for
starting. However, if the Metering Lever is not set properly, the Metering Diaphragm may push too
far or too little on the Metering Lever allowing too much or too little gasoline into the engine.
If the Metering Lever is set too far in, the movement of the Metering Diaphragm will not be
sufficient to open the Inlet Needle Valve the required amount. This will make the engine hard to
start because it will not be getting enough gasoline.
If the Metering Lever is set too far out, the movement of the Metering Diaphragm will open
the Inlet Needle Valve too far. This will make the engine hard to start because it will be getting too
much gasoline.
A Metering Lever set too low will decrease the volume of gasoline held in the Metering
Chamber. This will force the Fuel Needle to be set more than 1 turn from STOP to compensate for
less gasoline in the Metering Chamber.
A Metering Lever set too far out will increase the volume of gasoline held in the Metering
Chamber. This will force the Fuel Needle to be set at less than 3⁄4 turn from STOP.
If the internal Carburetor parts are replaced or removed, it is a good idea to check the
Metering Lever adjustment. The Metering Lever is adjusted in relationship to the circuit plate as
shown in the Metering Lever Adjustment Diagram (Fig. 9).
Be careful that the Metering Lever tip is not set farther out than 0.031” (0.787mm), since this
will cause the gasoline passageway through the Carburetor to remain open all the time. A setting of
more than 0.031” will cause the machine to flood and be impossible to clear. After adjusting the
Metering Lever, be sure to readjust the Fuel Needle.
Metering Lever Adjustment
FIGURE 9
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Содержание BLACKHAWK 2620
Страница 1: ...MODEL 2620 2630 INSTRUCTION MANUAL FOR OPERATION SERVICE AND MAINTENANCE ...
Страница 24: ...24 ...
Страница 44: ... 12 86629 ASOV Assembly 12 ...
Страница 48: ...Figure 43 43 ...
Страница 52: ...REPLACEMENT PARTS LIST FIGURE 25 REF CURTIS NO PART NO DESCRIPTION 1 85574 Strap carry 2 86226 Pad strap 52 ...