ENGINE CONTROLS
IGNITION SWITCH
When rocker switch is pressed in the “START” ( )
position, this switch starts the engine.
“AUTO/IDLE/RUN” SWITCH
The idler switch has three positions,
“HIGH/IDLE/RUN,” “AUTO/IDLE/RUN” and “STOP”.
When in “HIGH/IDLE/RUN” ( ) position, the
engine will run continuously at high idle.
When in “AUTO/IDLE/RUN” ( / ) idle posi-
tion, the idler operates as follows:
When placed in the “STOP” ( ) position, the flow of
fuel to the injection pump is stopped to shut down the
engine.
a. Welding
When the electrode touches the work, the welding arc
is initiated and the engine accelerates to full speed.
After welding ceases (and no auxiliary power is
being drawn), the engine will return to low idle after
approximately 14 to 16 seconds.
b. Auxiliary Power
With the engine running at low idle and auxiliary
power for lights or tools is drawn (approximately
100-150 watts or greater) from the receptacles, the
engine will accelerate to high speed. If no power is
being drawn from the receptacles ( and not weld-
ing) for 14-16 seconds, the idler reduces the
engine speed to low idle.
DASHBOARD GAUGE FEATURES
ENGINE OIL PRESSURE
Displays the oil pressure to the engine.
ENGINE TEMPERATURE
Displays the coolant temperature in the engine block.
ENGINE HOUR METER AND FAULT CODE DISPLAY
When there is an active fault, the general code num-
ber is displayed for 2 seconds, followed by the engine
hours for 6 seconds. The engine hour meter records
the total running time on the engine in hours. It can be
used to keep a record of maintenance on the engine
and or welder.
FUEL LEVEL
Displays the fuel level in the fuel tank.
BATTERY CHARGE VOLT METER
Displays the voltage going from the charging alternator
into the battery. It is normal for charging voltage to be
high after starting or when the battery is low on charge.
ENGINE PROTECTION SYSTEM
The engine protection system shuts down the engine
under high coolant temperature or low engine oil pres-
sure conditions by allowing the fuel solenoid valve to
close.
AIR INTAKE SHUT-OFF (Only on K3955-1)
The air intake shut-off is a automatic/manually device
which blocks all intake air from entering the engine.
The automatic feature of the shut-off will engage
should excessive over speeding occur. The valve is
calibrated at the factory to shutdown within the safety
limits of the engine.
To manually shut down the engine, simply pull the
emergency stop handle on the lower control panel.
Avoid using on a regular basis to shut down machine.
The air intake shut-off device will reset automatically,
generally within one minute.
IMPORTANT: Before restarting engine, verify that the
air intake shut-off is in the open position. DO NOT
ATTEMPT TO START ENGINE WITH THE AIR
INTAKE SHUT-OFF IN THE CLOSED POSITION.
This may cause severe damage to the engine.
W ARNING
•
Engine may be hot!
B-3
OPERATION
SAE-500
TM
AND SAE-500
TM
SEVERE DUTY
TM
