Section V. OPERATION UNDER UNUSUAL CONDITIONS

operating the nozzle to start the flow of fluid.

2-9. Stopping

The nozzle is equipped with a grounding wire

a. Stop the pumping assembly as directed in

terminated with an alligator clip (6, fig. 2-3)

figure 2-4.

a n d grounding plug (5). Use the required

b. P e r f o r m a l l a f t e r - o p e r a t i o n p r e v e n t i v e

device for the equipment being serviced. This

maintenance checks and services (table 3-1).

will dissipate any static charge which could

Note. If the engine has been running under a heavy load

cause a spark and ignite the fluid.

which has caused it to heat, reduce the load for several minutes

d. After the pump starts pumping, control the

to evenly distribute the heat before stopping the engine.

flow from the pump by using the nozzle assemblies.

The nozzle assemblies are nonautomatic type and

2-10. Operation

the operating handle (1, fig. 2-3) must be squeezed

Operate the pumping assembly under usual con-

whenever flow is desired from the discharge hose.

ditions as follows:

Always remove the outlet cap (3) before using the

a. Start the pumping assembly (para 2-8).

nozzle; replace the cap after use. Releasing the

b. The length of time required for the pump to

operating handle will stop fuel flow from the nozzle.

gain its prime and start pumping depends upon the

e. Avoid long periods of pump operation during

height of the suction lift and the condition of the

which there is no flow of fluid through the pump.

pump. Pumping should start in to 2 minutes.

While this will not seriously damage the pump, it

may cause the fluid trapped in the pump housing to

Note. Momentarily opening the nozzle at the end of a

discharge hose from time to time during startup will relieve

heat up and boil.

pressure in the discharge system and will promote faster

Warning: Do not fill the engine fuel tank

priming.

while the engine is running or while it is hot.

c. I f t h e p u m p f a i l s t o prime, consult the

Gasoline spilled on a hot engine can ignite and

troubleshooting chart (table 3-2) to find and correct

may cause severe burns to the operator as well

the cause of the trouble.

as damage to the equipment.

W a r n i n g : When using the nozzles to

f. Check the fuel tank at intervals. If the fuel

service the fuel systems of other equipment,

supply is low, stop the engine and refill the tank

always make metal contact between the nozzle

with gasoline to prevent running out of fuel.

a n d the equipment being serviced before

g. Stop the pump as directed in paragraph 2-9.

Section V. OPERATION UNDER UNUSUAL CONDITIONS

2-13. Operation in Dusty or Sandy Areas

2-11. Operation in Extreme Cold (Below 0 F

(18 C) ).

Note the following when operating the pumping

assembly in dusty or sandy areas:

To operate the pumping assembly in conditions of

a. Use extreme caution to prevent lubricants

extreme cold, proceed as follows:

from becoming contaminated with dust or sand.

a. Keep the fuel tank filled when the unit is not

b. Service the air cleaner more frequently (para

in operation.

3-9). The service period will be determined by the

b. Service the fuel strainer frequently (para 3-

amount of dust collected in the air cleaner cup

11) to prevent ice crystals from clogging the filter

during operation.

element.

c. Prevent dust and sand from entering the fuel

c. Refer to the current lubrication order for

system. Service the fuel strainer frequently (para 3-

lubricants required during operation in extreme

11) to prevent dust and sand from collecting in the

cold.

fuel bowl.

d. Take care to allow the engine to reach

operating temperature before applying full load.

2-14. Operation under Rainy or Humid Con-

ditions

2-12. Operation in Extreme Heat

Note the following when operating the pumping

To operate the pumping assembly in extreme heat,

assembly under rainy or humid conditions:

proceed as follows:

a. Take care to prevent moisture from entering

a. Refer to the current lubrication order for

the fuel system. Keep the fuel tank filled when the

lubricants required during operation in extreme

unit is not in use to prevent moisture from con-

heat.

densing in the fuel tank.

b. Protect the unit from direct sunlight. Provide

b. Service the fuel strainer frequently (para 3-

shade for the unit whenever possible.

11) to prevent moisture from accumulating in the

c. Take care to allow free air circulation around

fuel bowl.

the unit. Remove any obstacles which might

prevent free circulation.

2-7