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TROUBLESHOOTING & REPAIR
F-70 F-70
RANGER 10-LX
RETEST AFTER REPAIR
Retest a machine:
• If it is rejected under test for any reason that requires you to remove any mechanical part which could affect the
machine’s electrical characteristics. OR
• If you repair or replace any electrical components.
ENGINE OUTPUT
Mode No Load RPM Load RPM
Low Idle 2150-2250 NA
High Idle 3650-3700 3400-3650
WELDER DC OUTPUT
1
Output Control Range Switch Open Circuit Load Volts Load Amps
Volts
Maximum Maximum 61 - 68 25 - 35 250 - 285
WELDER AC OUTPUT
1
Output Control Range Switch Open Circuit Load Volts Load Amps
Volts
Maximum Maximum 70 - 76 25 - 35 250 - 305
WELDER CV OUTPUT
1
Output Control Range Switch Open Circuit Load Volts Load Amps
Volts
Maximum Wire Feed CV High 59 - 62 30 - 34 250 - 280
Maximum Wire Feed CV Med HI 42 - 45 23 - 26 220 - 240
Maximum Wire Feed CV Med LO 33.5 - 36 19 - 21 155 - 170
Maximum Wire Feed CV Low 25 - 27 14.5 - 16 135 - 155
AUXILIARY POWER OUTPUT
230 Volt Receptacle 115 Volt Receptacle
2
Open Circuit Load Volts Load Amps Open Circuit Load Volts Load Amps
Voltage Voltage
245 - 253 210 - 240 43 - 48 120 - 127 106 - 121 78 - 83
AMPHENOL AUXILIARY OUTPUT
42 Volt Auxiliary 115 Volt Receptacle
2
Open Circuit Load Volts Open Circuit Load Volts
Voltage Voltage
43 - 50 40 - 48 115 - 126 110 - 126
FIELD AMPS AND VOLTS
Slip Ring Volts Field Amps
37 - 47 VDC 6 - 6.8 Amps DC
1
OUTPUT CONTROL switch set at MAXIMUM (position 10).
2
Output values of each receptacle can vary within the range shown but must be within 2 volts of each other.