Section II.
CONTROLS AND INSTRUMENTS
11. General
This section describes, locates, illustrates, and furnishes the operator sufficient information pertaining to the various
controls and instruments provided-for he proper operation of- the Macleod Water Distributor.
12. Engine Fuel Shutoff Valve
The engine fuel shutoff valve (3, fig. 10) is located on the carrier fuel strainer and is used to stop the flow of fuel from
the truck gas tank to the fuel pump (6, fig. 27).
a. Close spray bar valves (15 and 16, fig. 4) and discharge valves (15, fig. 1). Open suction valve (17, fig. 4).
c. Start engine and pump (para. 34).
1 Fuel filter
4 Nut
2 Street ell
5 Fuel line
3
Valve
Figure 10. Carrier fuel filter
13. Engine Primer Control
The engine primer control (11, fig. 4) is located on the engine rear panel. It allows the operator to prime the carburetor
manually.
14. Engine Choke Control
The choke control (13, fig. 11) is located on the front panel beneath the low oil pressure cutoff switch (5). It is a wire
type manual control that closes the butterfly valve in the carburetor to enrich the fuel mixture when starting a cold
engine.
15. Engine Magneto Stop Switch
The magneto stop switch (2, fig. 11) is located on the front panel to the left of the governor control knob (3). It is a
push-pull switch and stops the engine by grounding the magneto. The ON position is with the switch pulled OUT. The
OFF position is with the switch pushed IN.
16. Emergency Ground Button
The emergency ground button (22, fig. 18) is located on the bottom of the magneto. Pushing the button IN stops the
engine in an emergency.
17. Engine Starter Button
The starter button (1, fig. 11) is located on the front panel to the left of the magneto ground switch (2).
18. Engine Crank
The engine crank is located in the tool box (fig. 12). It is used for manual starting of the engine.
19. Engine Governor Control
The governor control (3, fig. 11) is located on the front panel below the oil filter assembly (6). It is a pushpull handle
and rod control. It controls the speed of the engine. Pulling out the control increases engine speed. It may be locked
in any position by turning the knob in a clockwise direction.
AGO 6871A
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