(2) Keep all exposed surfaces of the engine
clean.
(3) Remove all obstructions to the flow of air
across the engine.
c. Lubrication. Refer to the current lubrication
order and lubricate the unit.
d. Pumping Unit. Where possible, operate the
pumping unit in the shade to avoid overheating and
do not run the engine too hard. If the engine
overheats, remove the load and idle the engine at
1,000 rpm for five minutes. If fuel vapor lock
occurs, wait until the engine cools off.
e. Tanks and Hoses. Locate the tanks in the
shade, where possible, and wet down with water to
reduce heat.
2-13. Operation in Dusty or Sandy Areas
a. Protection. Take advantage of natural barriers
to blowing sand and dust; or, if necessary, erect
artificial barriers.
b. Air Cleaner. Service the air cleaner frequently
(fig. 3-1).
c . F i l t e r / S e p a r a t o r E l e m e n t . S e r v i c e t h e
filter / separator frequently (fig. 3-4).
d. Cleaning. Clean the tank and pump unit with
an approved cleaning solvent, giving special at-
tention to cavities, corners, and partially exposed
interior spaces. Dry thoroughly. Keep the tank and
area around the discharge valve and controls free
from sand and dust.
2 - 1 4 . O p e r a t i o n U n d e r R a i n y o r H u m id
Conditions
When the unit is outside and not operating, keep
the fuel tank full to prevent the forming of con-
densate. Give special care to keeping all com-
ponents free from moisture. Clean and paint all
surfaces not otherwise protected.
2-15. Operation in Salt Water Areas
Salt water corrodes metal. If unpainted equipment
parts are exposed to salt water, clean them off
immediately with an approved cleaning solvent,
and dry thoroughly. All surfaces should be cleaned
daily.
2-16. Operation at High Altitudes
T h e u n i t i s d e s i g n e d t o o p e r a t e a t 8 , 0 0 0 f e et
a b o v e s e a l e v e l w i t h o u t s p e c i a l a d j u s t m e n t s.
However. at higher altitudes, the carburetor may
require adjustment (fig. 4-14).
2-8
