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 TM 55-1905-223-10
Table 2-1. Description of Operator's Controls and Indicators - CONT
Key
Control or Indicator
Function
Portable Fire Pump (P-250) (FIGURE 2-59)
1
Pressure Gauge
Indicates pump pressure, or pump vacuum when
priming.
2
AMPERES Gauge
Indicates if alternator is charging or
3
OFF-START-RUN
Switch turns engine off in OFF, allows engine to
start in START, and allows engine to run in RUN
position and prevents over speed of engine if
prime is lost.
4
PRIME
Pushbutton to put pump in priming mode.
5
START
Pushbutton to place engine in starting mode with
OFF-START-RUN switch in START position.
6
CHOKE
Controls carburetor fuel/air mixture.
7
SPEED
Controls speed of engine.
8
Suction Hose
Provides connection for suction hose.
Connection with Cover
9
Water Discharge
In closed position and PRIME pushbutton
Valve
depressed, pump is in priming mode. In open
position, pump can discharge water.
10
Discharge Hose
Provides connection for discharge hose.
Connection with Cover
11
Priming Pump
Discharges output of pump.
Discharge Port
12
Manual Priming
To manually prime pump when lift is greater than
Inlet Plug
20 feet.
13
Pump Drain Valve
When open, drains water from pump.
14
Manual Start
Provides emergency engine starting.
Pull Cord
15
External Fuel Tank
Provides fuel for pump engine.
2-153
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