Figure 4-14. Fuel pump.

b. Tests. In order to assure an adequate quantity

of fuel and a constant fuel level at all driving

conditions, it is necessary that both fuel pump

pressure and volume be within specifications. The

only reliable pressure test is one made under actual

o p e r a t i n g conditions (i.e., with fuel pump sup-

plying fuel to carburetor and with a pressure gage

located within six inches and connected to the fuel

line).

(1) C o n n e c t i o n s .

(a) Remove air cleaner and disconnect fuel

line at carburetor.

(b) Mount tester to carburetor inlet with

gage in vertical position (fig. 4-15). Use adapters if

necessary. Fittings need only to be "finger tight".

(c) Connect fuel line to fitting on fuel pump

tester hose. Use adapter if necessary.

(d) Clamp fuel discharge hose on tester.

Figure 4-14. Fuel pump.