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B-4
OPERATION
B-4
Operating the starter motor for more than 5 sec-
onds can damage the motor. If the engine fails to
start, release the switch and wait 10 seconds
before operation the starter again. Do NOT push
the START button while the engine is running
because this can damage the ring gear and/or the
starter motor.
NOTE: When starting a Ranger 250 for the first time,
or after an extended period of time of not operating, it
will take longer than normal because the fuel pump
has to fill the fuel line and carburetor.
STOPPING
Remove all welding and auxiliary power loads and
allow the engine to run at low idle speed for a few
minutes to cool the engine.
Stop the engine by placing the RUN-STOP in the
STOP position.
NOTE: A fuel shut off valve is not required on the
Ranger 250 because the fuel tank is mounted below
the engine.
WELDER OPERATION
DC Stick Welding
The Ranger 250 can be used with a broad range of
DC stick electrodes.
The MODE switch provides two stick welding settings
as follows:
Constant Current (CC-STICK) Welding
The CC-STICK position of the MODE switch is
designed for horizontal and vertical-up welding with all
types of electrodes, especially low hydrogen. The out-
put CONTROL dial adjusts the full output range for
stick welding.
The ARC CONTROL knob sets the short circuit cur-
rent during stick welding (arc-force). Increasing the
number from -10 to +10 increases the short circuit cur-
rent and prevents sticking of the electrode to the plate
while welding. This can also increase spatter. It is rec-
ommended that the ARC CONTROL be set to the
minimum number without electrode sticking. Start with
the dial set at 0.
PIPE Welding
This slope controlled setting is intended for "out-of-
position" and "down hill" pipe welding where the oper-
ator would like to control the current level by changing
the arc length. The output CONTROL dial adjusts the
full output range for pipe welding. The ARC CON-
TROL knob sets the short circuit current during stick
welding (arc-force). Increasing the number from -10 to
+10 increases the short circuit current and prevents
sticking of the electrode to the plate while welding.
This can also increase spatter. It is recommended that
the ARC CONTROL be set to the minimum number
without electrode sticking. Start with the dial set at 0.
RANGER 250
CAUTION
TYPICAL RANGER 250 FUEL CONSUMPTION
Kohler CH20 Onan P220 OHV Running Time for
20HP @ 3600 RPM 20.5HP @ 3600 RPM 12 gallons-hours
Gal./Hr (Liters/Hr) Gal./Hr (Liters/Hr) CH20/P220 OHV
Low Idle - No Load
2400 R.P.M. 0.6 (2.3) 0.5 (1.9) 20/24
High Idle - No Load
3700 R.P.M. 0.8 (3.0) 0.8 (3.0) 15/15
DC Weld Output
250 Amps @ 28 Volts 1.40 (5.3) 1.6 (5.9) 8.6/7.5
Auxiliary Power
8,500 Watts 1.47 (5.6) 1.7 (6.4) 8.2/7.0